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<h3>
Marge Bot pushed to branch master
at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
</h3>
<h4>
Commits:
</h4>
<ul>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/71484b09fa3c676e99785b3d68f69d4cfb14266e">71484b09</a></strong>
<div>
<span>by Alexis King</span>
<i>at 2020-04-30T01:57:35-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Allow block arguments in arrow control operators
Arrow control operators have their own entries in the grammar, so they
did not cooperate with BlockArguments. This was just a minor oversight,
so this patch adjusts the grammar to add the desired behavior.
fixes #18050
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a48cd2a045695c5f34ed7b00184a8d91c4fcac0e">a48cd2a0</a></strong>
<div>
<span>by Alexis King</span>
<i>at 2020-04-30T01:57:35-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Allow LambdaCase to be used as a command in proc notation
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f4d3773c7f4209cd3a0495ab9a29b978da48e2ff">f4d3773c</a></strong>
<div>
<span>by Alexis King</span>
<i>at 2020-04-30T01:57:35-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Document BlockArguments/LambdaCase support in arrow notation
</pre>
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<h4>21 changed files:</h4>
<ul>
<li class="file-stats">
<a href="#cc97d81e7223ad4a3a5e801156ca632f9fa75654">
compiler/GHC/Hs/Expr.hs
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<li class="file-stats">
<a href="#576dff4e64fa03683ffc5dcdd58284acdd70bc8e">
compiler/GHC/Hs/Extension.hs
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<li class="file-stats">
<a href="#5855ff1d64fcadf28e7984964e69e35ff4de7f0a">
compiler/GHC/HsToCore/Arrows.hs
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<li class="file-stats">
<a href="#e011edcbdb6414ff00022ab5c1eeee88906a53ab">
compiler/GHC/HsToCore/Coverage.hs
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<li class="file-stats">
<a href="#649144a78135a23cabfc90dd83c4aabf448eb6ab">
compiler/GHC/Iface/Ext/Ast.hs
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<li class="file-stats">
<a href="#bf951467d4a9aa443cb109cb4c84a2891945649b">
compiler/GHC/Parser.y
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<li class="file-stats">
<a href="#446cb12ca6cefaf1c6eb79b7db643632744263c7">
compiler/GHC/Parser/PostProcess.hs
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<li class="file-stats">
<a href="#b47ece2bbb8303a5792c2fdc52394c8ed336e8a2">
compiler/GHC/Rename/Expr.hs
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<li class="file-stats">
<a href="#71fa5eb3ba70e1d3a6181a226c2c227d42f1eb7d">
compiler/GHC/Tc/Gen/Arrow.hs
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<li class="file-stats">
<a href="#6a120b0673f8920127d8fffdaa16f01b90cc92d7">
compiler/GHC/Tc/Utils/Zonk.hs
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<li class="file-stats">
<a href="#b421960e854c6cfa1e4ca830bd6a5fc6eef91168">
docs/users_guide/8.12.1-notes.rst
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<li class="file-stats">
<a href="#67a7e440f848e5233e24f587c2e02fde258d232a">
docs/users_guide/exts/lambda_case.rst
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<li class="file-stats">
<a href="#f9231f037487da31bca79eb6ea5aeb7e8fc524d5">
<span class="new-file">
+
testsuite/tests/arrows/should_run/ArrowLambdaCase.hs
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<li class="file-stats">
<a href="#a79ee3b41316cdb7be56fbdbc8603580f8076d53">
<span class="new-file">
+
testsuite/tests/arrows/should_run/ArrowLambdaCase.stdout
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<li class="file-stats">
<a href="#04f591b13f8003cfef6f11401c29ffa25d5db9d4">
testsuite/tests/arrows/should_run/all.T
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<li class="file-stats">
<a href="#be44185983c46c584b5b5173d3de71bcd0d3454f">
<span class="new-file">
+
testsuite/tests/parser/should_compile/BlockArgumentsArrowCmds.hs
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<li class="file-stats">
<a href="#9a1fda400de867f43dbfb681557071bd6b1f695a">
<span class="new-file">
+
testsuite/tests/parser/should_compile/ParserArrowLambdaCase.hs
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<li class="file-stats">
<a href="#a43397658ba43ce6747320867b3a0330bcea2ea5">
testsuite/tests/parser/should_compile/all.T
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<li class="file-stats">
<a href="#5c9f89a9dd9887880f9a292e6408cf663cfb2be9">
<span class="new-file">
+
testsuite/tests/parser/should_fail/NoBlockArgumentsFailArrowCmds.hs
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<li class="file-stats">
<a href="#a41ce250abd8626247d38d0507f9e5bff90278be">
<span class="new-file">
+
testsuite/tests/parser/should_fail/NoBlockArgumentsFailArrowCmds.stderr
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<li class="file-stats">
<a href="#3577fc796b73fe1f96c77f05fcdd73a8d4bc6f66">
testsuite/tests/parser/should_fail/all.T
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<h4>Changes:</h4>
<li id="cc97d81e7223ad4a3a5e801156ca632f9fa75654">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/8bfb0219587b969d5c8f723c46d433e9493958b4...f4d3773c7f4209cd3a0495ab9a29b978da48e2ff#cc97d81e7223ad4a3a5e801156ca632f9fa75654"><strong>compiler/GHC/Hs/Expr.hs</strong></a>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1330" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1330" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1330,6 +1330,14 @@ data HsCmd id</td>
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<pre style="margin: 0;"> <span id="LC1330" class="line" lang="haskell"></span>
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<td class="diff-line-num old_line" data-linenumber="1331" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC1331" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- For details on above see note [Api annotations] in GHC.Parser.Annotation</span></span>
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<td class="diff-line-num old_line" data-linenumber="1332" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<td class="diff-line-num new_line" data-linenumber="1332" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC1332" class="line" lang="haskell"></span>
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<td class="diff-line-num new new_line" data-linenumber="1333" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">
<pre style="margin: 0;">+<span id="LC1333" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">HsCmdLamCase</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">XCmdLamCase</span> <span class="n" style="color: #333;">id</span><span class="p">)</span></span>
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<td class="diff-line-num new old_line" data-linenumber="1333" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="diff-line-num new new_line" data-linenumber="1334" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">
<pre style="margin: 0;">+<span id="LC1334" class="line" lang="haskell"> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">MatchGroup</span> <span class="n" style="color: #333;">id</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsCmd</span> <span class="n" style="color: #333;">id</span><span class="p">))</span> <span class="c1" style="color: #998; font-style: italic;">-- bodies are HsCmd's</span></span>
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<td class="diff-line-num new old_line" data-linenumber="1333" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="diff-line-num new new_line" data-linenumber="1335" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC1335" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- ^ - 'ApiAnnotation.AnnKeywordId' : 'ApiAnnotation.AnnLam',</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1336" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC1336" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- 'ApiAnnotation.AnnCase','ApiAnnotation.AnnOpen' @'{'@,</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1337" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC1337" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- 'ApiAnnotation.AnnClose' @'}'@</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1338" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC1338" class="line" lang="haskell"></span>
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<td class="diff-line-num new new_line" data-linenumber="1339" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC1339" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- For details on above see note [Api annotations] in GHC.Parser.Annotation</span></span>
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<pre style="margin: 0;">+<span id="LC1340" class="line" lang="haskell"></span>
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<td class="diff-line-num new_line" data-linenumber="1341" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC1341" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">HsCmdIf</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">XCmdIf</span> <span class="n" style="color: #333;">id</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC1342" class="line" lang="haskell"> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SyntaxExpr</span> <span class="n" style="color: #333;">id</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- cond function</span></span>
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<td class="diff-line-num new_line" data-linenumber="1343" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC1343" class="line" lang="haskell"> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="n" style="color: #333;">id</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- predicate</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1371" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1379" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1371,6 +1379,7 @@ type instance XCmdApp (GhcPass _) = NoExtField</td>
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1371
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1379
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<pre style="margin: 0;"> <span id="LC1379" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">XCmdLam</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">GhcPass</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">NoExtField</span></span>
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1372
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1380
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<pre style="margin: 0;"> <span id="LC1380" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">XCmdPar</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">GhcPass</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">NoExtField</span></span>
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1373
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1381
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<pre style="margin: 0;"> <span id="LC1381" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">XCmdCase</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">GhcPass</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">NoExtField</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1382" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1382
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<pre style="margin: 0;">+<span id="LC1382" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">XCmdLamCase</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">GhcPass</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">NoExtField</span></span>
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1374
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<td class="diff-line-num new_line" data-linenumber="1383" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1383
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<pre style="margin: 0;"> <span id="LC1383" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">XCmdIf</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">GhcPass</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">NoExtField</span></span>
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1375
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1384
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<pre style="margin: 0;"> <span id="LC1384" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">XCmdLet</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">GhcPass</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">NoExtField</span></span>
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1376
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1385
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<pre style="margin: 0;"> <span id="LC1385" class="line" lang="haskell"></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1469" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1460,6 +1469,9 @@ ppr_cmd (HsCmdCase _ expr matches)</td>
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1460
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1469
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<pre style="margin: 0;"> <span id="LC1469" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">sep</span> <span class="p">[</span> <span class="n" style="color: #333;">sep</span> <span class="p">[</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"case"</span><span class="p">,</span> <span class="n" style="color: #333;">nest</span> <span class="mi" style="color: #099;">4</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">expr</span><span class="p">),</span> <span class="n" style="color: #333;">ptext</span> <span class="p">(</span><span class="n" style="color: #333;">sLit</span> <span class="s" style="color: #d14;">"of"</span><span class="p">)],</span></span>
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1461
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1470
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<pre style="margin: 0;"> <span id="LC1470" class="line" lang="haskell"> <span class="n" style="color: #333;">nest</span> <span class="mi" style="color: #099;">2</span> <span class="p">(</span><span class="n" style="color: #333;">pprMatches</span> <span class="n" style="color: #333;">matches</span><span class="p">)</span> <span class="p">]</span></span>
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1462
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1471
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<pre style="margin: 0;"> <span id="LC1471" class="line" lang="haskell"></span>
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1472
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<pre style="margin: 0;">+<span id="LC1472" class="line" lang="haskell"><span class="n" style="color: #333;">ppr_cmd</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdLamCase</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">matches</span><span class="p">)</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1473" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1473
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<pre style="margin: 0;">+<span id="LC1473" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">sep</span> <span class="p">[</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"</span><span class="se" style="color: #d14;">\\</span><span class="s" style="color: #d14;">case"</span><span class="p">,</span> <span class="n" style="color: #333;">nest</span> <span class="mi" style="color: #099;">2</span> <span class="p">(</span><span class="n" style="color: #333;">pprMatches</span> <span class="n" style="color: #333;">matches</span><span class="p">)</span> <span class="p">]</span></span>
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1474
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<pre style="margin: 0;">+<span id="LC1474" class="line" lang="haskell"></span>
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1463
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1475
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<pre style="margin: 0;"> <span id="LC1475" class="line" lang="haskell"><span class="n" style="color: #333;">ppr_cmd</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdIf</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">e</span> <span class="n" style="color: #333;">ct</span> <span class="n" style="color: #333;">ce</span><span class="p">)</span></span>
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1464
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1476
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<pre style="margin: 0;"> <span id="LC1476" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">sep</span> <span class="p">[</span><span class="n" style="color: #333;">hsep</span> <span class="p">[</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"if"</span><span class="p">,</span> <span class="n" style="color: #333;">nest</span> <span class="mi" style="color: #099;">2</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">e</span><span class="p">),</span> <span class="n" style="color: #333;">ptext</span> <span class="p">(</span><span class="n" style="color: #333;">sLit</span> <span class="s" style="color: #d14;">"then"</span><span class="p">)],</span></span>
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1465
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1477
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<pre style="margin: 0;"> <span id="LC1477" class="line" lang="haskell"> <span class="n" style="color: #333;">nest</span> <span class="mi" style="color: #099;">4</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ct</span><span class="p">),</span></span>
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<li id="576dff4e64fa03683ffc5dcdd58284acdd70bc8e">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/8bfb0219587b969d5c8f723c46d433e9493958b4...f4d3773c7f4209cd3a0495ab9a29b978da48e2ff#576dff4e64fa03683ffc5dcdd58284acdd70bc8e"><strong>compiler/GHC/Hs/Extension.hs</strong></a>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="599" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="599" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -599,6 +599,7 @@ type family XCmdApp x</td>
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599
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599
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<pre style="margin: 0;"> <span id="LC599" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="n" style="color: #333;">family</span> <span class="kt" style="color: #458; font-weight: 600;">XCmdLam</span> <span class="n" style="color: #333;">x</span></span>
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<pre style="margin: 0;"> <span id="LC600" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="n" style="color: #333;">family</span> <span class="kt" style="color: #458; font-weight: 600;">XCmdPar</span> <span class="n" style="color: #333;">x</span></span>
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<pre style="margin: 0;"> <span id="LC601" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="n" style="color: #333;">family</span> <span class="kt" style="color: #458; font-weight: 600;">XCmdCase</span> <span class="n" style="color: #333;">x</span></span>
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<pre style="margin: 0;">+<span id="LC602" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="n" style="color: #333;">family</span> <span class="kt" style="color: #458; font-weight: 600;">XCmdLamCase</span> <span class="n" style="color: #333;">x</span></span>
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<pre style="margin: 0;"> <span id="LC603" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="n" style="color: #333;">family</span> <span class="kt" style="color: #458; font-weight: 600;">XCmdIf</span> <span class="n" style="color: #333;">x</span></span>
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<pre style="margin: 0;"> <span id="LC604" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="n" style="color: #333;">family</span> <span class="kt" style="color: #458; font-weight: 600;">XCmdLet</span> <span class="n" style="color: #333;">x</span></span>
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<pre style="margin: 0;"> <span id="LC605" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="n" style="color: #333;">family</span> <span class="kt" style="color: #458; font-weight: 600;">XCmdDo</span> <span class="n" style="color: #333;">x</span></span>
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<li id="5855ff1d64fcadf28e7984964e69e35ff4de7f0a">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/8bfb0219587b969d5c8f723c46d433e9493958b4...f4d3773c7f4209cd3a0495ab9a29b978da48e2ff#5855ff1d64fcadf28e7984964e69e35ff4de7f0a"><strong>compiler/GHC/HsToCore/Arrows.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -447,45 +447,12 @@ dsCmd ids local_vars stack_ty res_ty (HsCmdApp _ cmd arg) env_ids = do</td>
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<pre style="margin: 0;"> <span id="LC447" class="line" lang="haskell"> <span class="n" style="color: #333;">free_vars</span> <span class="p">`</span><span class="n" style="color: #333;">unionDVarSet</span><span class="p">`</span></span>
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<pre style="margin: 0;"> <span id="LC448" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">exprFreeIdsDSet</span> <span class="n" style="color: #333;">core_arg</span> <span class="p">`</span><span class="n" style="color: #333;">uniqDSetIntersectUniqSet</span><span class="p">`</span> <span class="n" style="color: #333;">local_vars</span><span class="p">))</span></span>
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<pre style="margin: 0;"> <span id="LC449" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC450" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- D; ys |-a cmd : stk t'</span></span>
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<pre style="margin: 0;">-<span id="LC451" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- -----------------------------------------------</span></span>
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<pre style="margin: 0;">-<span id="LC452" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- D; xs |-a \ p1 ... pk -> cmd : (t1,...(tk,stk)...) t'</span></span>
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<pre style="margin: 0;">-<span id="LC453" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;">-<span id="LC454" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- ---> premap (\ ((xs), (p1, ... (pk,stk)...)) -> ((ys),stk)) cmd</span></span>
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<pre style="margin: 0;">-<span id="LC455" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC450" class="line" lang="haskell"><span class="n" style="color: #333;">dsCmd</span> <span class="n" style="color: #333;">ids</span> <span class="n" style="color: #333;">local_vars</span> <span class="n" style="color: #333;">stack_ty</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;"> <span id="LC451" class="line" lang="haskell"> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdLam</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">MG</span> <span class="p">{</span> <span class="n" style="color: #333;">mg_alts</span></span>
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<pre style="margin: 0;"> <span id="LC452" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Match</span> <span class="p">{</span> <span class="n" style="color: #333;">m_pats</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pats</span></span>
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<pre style="margin: 0;"> <span id="LC453" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">m_grhss</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">GRHSs</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">GRHS</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span> <span class="n" style="color: #333;">body</span><span class="p">)]</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">})])</span> <span class="p">}))</span></span>
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<pre style="margin: 0;">-<span id="LC460" class="line" lang="haskell"> <span class="n" style="color: #333;">env_ids</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">-<span id="LC461" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">pat_vars</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkVarSet</span> <span class="p">(</span><span class="n" style="color: #333;">collectPatsBinders</span> <span class="n" style="color: #333;">pats</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC462" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span></span>
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<pre style="margin: 0;">-<span id="LC463" class="line" lang="haskell"> <span class="n" style="color: #333;">local_vars'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pat_vars</span> <span class="p">`</span><span class="n" style="color: #333;">unionVarSet</span><span class="p">`</span> <span class="n" style="color: #333;">local_vars</span></span>
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<pre style="margin: 0;">-<span id="LC464" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">pat_tys</span><span class="p">,</span> <span class="n" style="color: #333;">stack_ty'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">splitTypeAt</span> <span class="p">(</span><span class="n" style="color: #333;">length</span> <span class="n" style="color: #333;">pats</span><span class="p">)</span> <span class="n" style="color: #333;">stack_ty</span></span>
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<pre style="margin: 0;">-<span id="LC465" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">core_body</span><span class="p">,</span> <span class="n" style="color: #333;">free_vars</span><span class="p">,</span> <span class="n" style="color: #333;">env_ids'</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC466" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">dsfixCmd</span> <span class="n" style="color: #333;">ids</span> <span class="n" style="color: #333;">local_vars'</span> <span class="n" style="color: #333;">stack_ty'</span> <span class="n" style="color: #333;">res_ty</span> <span class="n" style="color: #333;">body</span></span>
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<pre style="margin: 0;">-<span id="LC467" class="line" lang="haskell"> <span class="n" style="color: #333;">param_ids</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">mapM</span> <span class="n" style="color: #333;">newSysLocalDsNoLP</span> <span class="n" style="color: #333;">pat_tys</span></span>
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<pre style="margin: 0;">-<span id="LC468" class="line" lang="haskell"> <span class="n" style="color: #333;">stack_id'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newSysLocalDs</span> <span class="n" style="color: #333;">stack_ty'</span></span>
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<pre style="margin: 0;">-<span id="LC469" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC470" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- the expression is built from the inside out, so the actions</span></span>
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<pre style="margin: 0;">-<span id="LC471" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- are presented in reverse order</span></span>
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<pre style="margin: 0;">-<span id="LC472" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC473" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span></span>
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<pre style="margin: 0;">-<span id="LC474" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- build a new environment, plus what's left of the stack</span></span>
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<pre style="margin: 0;">-<span id="LC475" class="line" lang="haskell"> <span class="n" style="color: #333;">core_expr</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">buildEnvStack</span> <span class="n" style="color: #333;">env_ids'</span> <span class="n" style="color: #333;">stack_id'</span></span>
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<pre style="margin: 0;">-<span id="LC476" class="line" lang="haskell"> <span class="n" style="color: #333;">in_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">envStackType</span> <span class="n" style="color: #333;">env_ids</span> <span class="n" style="color: #333;">stack_ty</span></span>
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<pre style="margin: 0;">-<span id="LC477" class="line" lang="haskell"> <span class="n" style="color: #333;">in_ty'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">envStackType</span> <span class="n" style="color: #333;">env_ids'</span> <span class="n" style="color: #333;">stack_ty'</span></span>
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<pre style="margin: 0;">-<span id="LC478" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC479" class="line" lang="haskell"> <span class="n" style="color: #333;">fail_expr</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">mkFailExpr</span> <span class="kt" style="color: #458; font-weight: 600;">LambdaExpr</span> <span class="n" style="color: #333;">in_ty'</span></span>
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<pre style="margin: 0;">-<span id="LC480" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- match the patterns against the parameters</span></span>
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<pre style="margin: 0;">-<span id="LC481" class="line" lang="haskell"> <span class="n" style="color: #333;">match_code</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">matchSimplys</span> <span class="p">(</span><span class="n" style="color: #333;">map</span> <span class="kt" style="color: #458; font-weight: 600;">Var</span> <span class="n" style="color: #333;">param_ids</span><span class="p">)</span> <span class="kt" style="color: #458; font-weight: 600;">LambdaExpr</span> <span class="n" style="color: #333;">pats</span> <span class="n" style="color: #333;">core_expr</span></span>
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<pre style="margin: 0;">-<span id="LC482" class="line" lang="haskell"> <span class="n" style="color: #333;">fail_expr</span></span>
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<pre style="margin: 0;">-<span id="LC483" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- match the parameters against the top of the old stack</span></span>
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<pre style="margin: 0;">-<span id="LC484" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">stack_id</span><span class="p">,</span> <span class="n" style="color: #333;">param_code</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">matchVarStack</span> <span class="n" style="color: #333;">param_ids</span> <span class="n" style="color: #333;">stack_id'</span> <span class="n" style="color: #333;">match_code</span></span>
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<pre style="margin: 0;">-<span id="LC485" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- match the old environment and stack against the input</span></span>
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<pre style="margin: 0;">-<span id="LC486" class="line" lang="haskell"> <span class="n" style="color: #333;">select_code</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">matchEnvStack</span> <span class="n" style="color: #333;">env_ids</span> <span class="n" style="color: #333;">stack_id</span> <span class="n" style="color: #333;">param_code</span></span>
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<pre style="margin: 0;">-<span id="LC487" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">do_premap</span> <span class="n" style="color: #333;">ids</span> <span class="n" style="color: #333;">in_ty</span> <span class="n" style="color: #333;">in_ty'</span> <span class="n" style="color: #333;">res_ty</span> <span class="n" style="color: #333;">select_code</span> <span class="n" style="color: #333;">core_body</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC488" class="line" lang="haskell"> <span class="n" style="color: #333;">free_vars</span> <span class="p">`</span><span class="n" style="color: #333;">uniqDSetMinusUniqSet</span><span class="p">`</span> <span class="n" style="color: #333;">pat_vars</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC454" class="line" lang="haskell"> <span class="n" style="color: #333;">env_ids</span></span>
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<pre style="margin: 0;">+<span id="LC455" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dsCmdLam</span> <span class="n" style="color: #333;">ids</span> <span class="n" style="color: #333;">local_vars</span> <span class="n" style="color: #333;">stack_ty</span> <span class="n" style="color: #333;">res_ty</span> <span class="n" style="color: #333;">pats</span> <span class="n" style="color: #333;">body</span> <span class="n" style="color: #333;">env_ids</span></span>
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<pre style="margin: 0;"> <span id="LC456" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC457" class="line" lang="haskell"><span class="n" style="color: #333;">dsCmd</span> <span class="n" style="color: #333;">ids</span> <span class="n" style="color: #333;">local_vars</span> <span class="n" style="color: #333;">stack_ty</span> <span class="n" style="color: #333;">res_ty</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdPar</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">cmd</span><span class="p">)</span> <span class="n" style="color: #333;">env_ids</span></span>
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<pre style="margin: 0;"> <span id="LC458" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dsLCmd</span> <span class="n" style="color: #333;">ids</span> <span class="n" style="color: #333;">local_vars</span> <span class="n" style="color: #333;">stack_ty</span> <span class="n" style="color: #333;">res_ty</span> <span class="n" style="color: #333;">cmd</span> <span class="n" style="color: #333;">env_ids</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -626,6 +593,12 @@ dsCmd ids local_vars stack_ty res_ty</td>
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<pre style="margin: 0;"> <span id="LC593" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">do_premap</span> <span class="n" style="color: #333;">ids</span> <span class="n" style="color: #333;">in_ty</span> <span class="n" style="color: #333;">sum_ty</span> <span class="n" style="color: #333;">res_ty</span> <span class="n" style="color: #333;">core_matches</span> <span class="n" style="color: #333;">core_choices</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC594" class="line" lang="haskell"> <span class="n" style="color: #333;">exprFreeIdsDSet</span> <span class="n" style="color: #333;">core_body</span> <span class="p">`</span><span class="n" style="color: #333;">uniqDSetIntersectUniqSet</span><span class="p">`</span> <span class="n" style="color: #333;">local_vars</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC595" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC596" class="line" lang="haskell"><span class="n" style="color: #333;">dsCmd</span> <span class="n" style="color: #333;">ids</span> <span class="n" style="color: #333;">local_vars</span> <span class="n" style="color: #333;">stack_ty</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;">+<span id="LC597" class="line" lang="haskell"> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdLamCase</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">mg</span><span class="o" style="font-weight: 600;">@</span><span class="kt" style="color: #458; font-weight: 600;">MG</span> <span class="p">{</span> <span class="n" style="color: #333;">mg_ext</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">MatchGroupTc</span> <span class="p">[</span><span class="n" style="color: #333;">arg_ty</span><span class="p">]</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">})</span> <span class="n" style="color: #333;">env_ids</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">+<span id="LC598" class="line" lang="haskell"> <span class="n" style="color: #333;">arg_id</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newSysLocalDs</span> <span class="n" style="color: #333;">arg_ty</span></span>
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<pre style="margin: 0;">+<span id="LC599" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">case_cmd</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">noLoc</span> <span class="o" style="font-weight: 600;">$</span><span class="err" style="color: #a61717; background-color: #e3d2d2;"> </span><span class="kt" style="color: #458; font-weight: 600;">HsCmdCase</span> <span class="n" style="color: #333;">noExtField</span> <span class="p">(</span><span class="n" style="color: #333;">nlHsVar</span> <span class="n" style="color: #333;">arg_id</span><span class="p">)</span> <span class="n" style="color: #333;">mg</span></span>
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<pre style="margin: 0;">+<span id="LC600" class="line" lang="haskell"> <span class="n" style="color: #333;">dsCmdLam</span> <span class="n" style="color: #333;">ids</span> <span class="n" style="color: #333;">local_vars</span> <span class="n" style="color: #333;">stack_ty</span> <span class="n" style="color: #333;">res_ty</span> <span class="p">[</span><span class="n" style="color: #333;">nlVarPat</span> <span class="n" style="color: #333;">arg_id</span><span class="p">]</span> <span class="n" style="color: #333;">case_cmd</span> <span class="n" style="color: #333;">env_ids</span></span>
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601
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<pre style="margin: 0;">+<span id="LC601" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC602" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- D; ys |-a cmd : stk --> t</span></span>
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<pre style="margin: 0;"> <span id="LC603" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- ----------------------------------</span></span>
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<pre style="margin: 0;"> <span id="LC604" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- D; xs |-a let binds in cmd : stk --> t</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -693,7 +666,7 @@ dsCmd ids local_vars stack_ty res_ty (XCmd (HsWrap wrap cmd)) env_ids = do</td>
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693
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<pre style="margin: 0;"> <span id="LC666" class="line" lang="haskell"> <span class="n" style="color: #333;">core_wrap</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">dsHsWrapper</span> <span class="n" style="color: #333;">wrap</span></span>
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<pre style="margin: 0;"> <span id="LC667" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">core_wrap</span> <span class="n" style="color: #333;">core_cmd</span><span class="p">,</span> <span class="n" style="color: #333;">env_ids'</span><span class="p">)</span></span>
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668
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<pre style="margin: 0;"> <span id="LC668" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC696" class="line" lang="haskell"><span class="n" style="color: #333;">dsCmd</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;"><span class="idiff left">_</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">c</span></span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pprPanic</span> <span class="s" style="color: #d14;">"dsCmd"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">c</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC669" class="line" lang="haskell"><span class="n" style="color: #333;">dsCmd</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;"><span class="idiff left">c</span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><span class="idiff right">_</span></span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pprPanic</span> <span class="s" style="color: #d14;">"dsCmd"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">c</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC670" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC671" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- D; ys |-a c : stk --> t (ys <= xs)</span></span>
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<pre style="margin: 0;"> <span id="LC672" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- ---------------------</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -753,6 +726,52 @@ trimInput build_arrow</td>
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<pre style="margin: 0;"> <span id="LC726" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">core_cmd</span><span class="p">,</span> <span class="n" style="color: #333;">free_vars</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">build_arrow</span> <span class="n" style="color: #333;">env_ids</span></span>
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<pre style="margin: 0;"> <span id="LC727" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">core_cmd</span><span class="p">,</span> <span class="n" style="color: #333;">free_vars</span><span class="p">,</span> <span class="n" style="color: #333;">dVarSetElems</span> <span class="n" style="color: #333;">free_vars</span><span class="p">))</span></span>
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<pre style="margin: 0;"> <span id="LC728" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC729" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Desugaring for both HsCmdLam and HsCmdLamCase.</span></span>
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730
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<pre style="margin: 0;">+<span id="LC730" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;">+<span id="LC731" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- D; ys |-a cmd : stk t'</span></span>
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732
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<pre style="margin: 0;">+<span id="LC732" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- -----------------------------------------------</span></span>
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<pre style="margin: 0;">+<span id="LC733" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- D; xs |-a \ p1 ... pk -> cmd : (t1,...(tk,stk)...) t'</span></span>
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<pre style="margin: 0;">+<span id="LC734" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;">+<span id="LC735" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- ---> premap (\ ((xs), (p1, ... (pk,stk)...)) -> ((ys),stk)) cmd</span></span>
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736
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<pre style="margin: 0;">+<span id="LC736" class="line" lang="haskell"><span class="n" style="color: #333;">dsCmdLam</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">DsCmdEnv</span> <span class="c1" style="color: #998; font-style: italic;">-- arrow combinators</span></span>
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<pre style="margin: 0;">+<span id="LC737" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IdSet</span> <span class="c1" style="color: #998; font-style: italic;">-- set of local vars available to this command</span></span>
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738
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<pre style="margin: 0;">+<span id="LC738" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Type</span> <span class="c1" style="color: #998; font-style: italic;">-- type of the stack (right-nested tuple)</span></span>
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<td class="diff-line-num new new_line" data-linenumber="739" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
739
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<pre style="margin: 0;">+<span id="LC739" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Type</span> <span class="c1" style="color: #998; font-style: italic;">-- return type of the command</span></span>
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740
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<pre style="margin: 0;">+<span id="LC740" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LPat</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">]</span> <span class="c1" style="color: #998; font-style: italic;">-- argument patterns to desugar</span></span>
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<td class="diff-line-num new new_line" data-linenumber="741" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
741
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<pre style="margin: 0;">+<span id="LC741" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsCmd</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span> <span class="c1" style="color: #998; font-style: italic;">-- body to desugar</span></span>
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742
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<pre style="margin: 0;">+<span id="LC742" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Id</span><span class="p">]</span> <span class="c1" style="color: #998; font-style: italic;">-- list of vars in the input to this command</span></span>
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743
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<pre style="margin: 0;">+<span id="LC743" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- This is typically fed back,</span></span>
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744
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<pre style="margin: 0;">+<span id="LC744" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- so don't pull on it too early</span></span>
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<pre style="margin: 0;">+<span id="LC745" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DsM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CoreExpr</span><span class="p">,</span> <span class="c1" style="color: #998; font-style: italic;">-- desugared expression</span></span>
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<pre style="margin: 0;">+<span id="LC746" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">DIdSet</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- subset of local vars that occur free</span></span>
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747
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<pre style="margin: 0;">+<span id="LC747" class="line" lang="haskell"><span class="n" style="color: #333;">dsCmdLam</span> <span class="n" style="color: #333;">ids</span> <span class="n" style="color: #333;">local_vars</span> <span class="n" style="color: #333;">stack_ty</span> <span class="n" style="color: #333;">res_ty</span> <span class="n" style="color: #333;">pats</span> <span class="n" style="color: #333;">body</span> <span class="n" style="color: #333;">env_ids</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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748
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<pre style="margin: 0;">+<span id="LC748" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">pat_vars</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkVarSet</span> <span class="p">(</span><span class="n" style="color: #333;">collectPatsBinders</span> <span class="n" style="color: #333;">pats</span><span class="p">)</span></span>
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749
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<pre style="margin: 0;">+<span id="LC749" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">local_vars'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pat_vars</span> <span class="p">`</span><span class="n" style="color: #333;">unionVarSet</span><span class="p">`</span> <span class="n" style="color: #333;">local_vars</span></span>
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750
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<pre style="margin: 0;">+<span id="LC750" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">pat_tys</span><span class="p">,</span> <span class="n" style="color: #333;">stack_ty'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">splitTypeAt</span> <span class="p">(</span><span class="n" style="color: #333;">length</span> <span class="n" style="color: #333;">pats</span><span class="p">)</span> <span class="n" style="color: #333;">stack_ty</span></span>
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751
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<pre style="margin: 0;">+<span id="LC751" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">core_body</span><span class="p">,</span> <span class="n" style="color: #333;">free_vars</span><span class="p">,</span> <span class="n" style="color: #333;">env_ids'</span><span class="p">)</span></span>
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752
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<pre style="margin: 0;">+<span id="LC752" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">dsfixCmd</span> <span class="n" style="color: #333;">ids</span> <span class="n" style="color: #333;">local_vars'</span> <span class="n" style="color: #333;">stack_ty'</span> <span class="n" style="color: #333;">res_ty</span> <span class="n" style="color: #333;">body</span></span>
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753
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<pre style="margin: 0;">+<span id="LC753" class="line" lang="haskell"> <span class="n" style="color: #333;">param_ids</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">mapM</span> <span class="n" style="color: #333;">newSysLocalDsNoLP</span> <span class="n" style="color: #333;">pat_tys</span></span>
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<pre style="margin: 0;">+<span id="LC754" class="line" lang="haskell"> <span class="n" style="color: #333;">stack_id'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newSysLocalDs</span> <span class="n" style="color: #333;">stack_ty'</span></span>
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<pre style="margin: 0;">+<span id="LC755" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC756" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- the expression is built from the inside out, so the actions</span></span>
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<pre style="margin: 0;">+<span id="LC757" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- are presented in reverse order</span></span>
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<pre style="margin: 0;">+<span id="LC758" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC759" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="c1" style="color: #998; font-style: italic;">-- build a new environment, plus what's left of the stack</span></span>
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<pre style="margin: 0;">+<span id="LC760" class="line" lang="haskell"> <span class="n" style="color: #333;">core_expr</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">buildEnvStack</span> <span class="n" style="color: #333;">env_ids'</span> <span class="n" style="color: #333;">stack_id'</span></span>
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761
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<pre style="margin: 0;">+<span id="LC761" class="line" lang="haskell"> <span class="n" style="color: #333;">in_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">envStackType</span> <span class="n" style="color: #333;">env_ids</span> <span class="n" style="color: #333;">stack_ty</span></span>
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762
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<pre style="margin: 0;">+<span id="LC762" class="line" lang="haskell"> <span class="n" style="color: #333;">in_ty'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">envStackType</span> <span class="n" style="color: #333;">env_ids'</span> <span class="n" style="color: #333;">stack_ty'</span></span>
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763
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<pre style="margin: 0;">+<span id="LC763" class="line" lang="haskell"></span>
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764
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<pre style="margin: 0;">+<span id="LC764" class="line" lang="haskell"> <span class="n" style="color: #333;">fail_expr</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">mkFailExpr</span> <span class="kt" style="color: #458; font-weight: 600;">LambdaExpr</span> <span class="n" style="color: #333;">in_ty'</span></span>
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765
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<pre style="margin: 0;">+<span id="LC765" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- match the patterns against the parameters</span></span>
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<pre style="margin: 0;">+<span id="LC766" class="line" lang="haskell"> <span class="n" style="color: #333;">match_code</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">matchSimplys</span> <span class="p">(</span><span class="n" style="color: #333;">map</span> <span class="kt" style="color: #458; font-weight: 600;">Var</span> <span class="n" style="color: #333;">param_ids</span><span class="p">)</span> <span class="kt" style="color: #458; font-weight: 600;">LambdaExpr</span> <span class="n" style="color: #333;">pats</span> <span class="n" style="color: #333;">core_expr</span></span>
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<pre style="margin: 0;">+<span id="LC767" class="line" lang="haskell"> <span class="n" style="color: #333;">fail_expr</span></span>
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<pre style="margin: 0;">+<span id="LC768" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- match the parameters against the top of the old stack</span></span>
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769
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<pre style="margin: 0;">+<span id="LC769" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">stack_id</span><span class="p">,</span> <span class="n" style="color: #333;">param_code</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">matchVarStack</span> <span class="n" style="color: #333;">param_ids</span> <span class="n" style="color: #333;">stack_id'</span> <span class="n" style="color: #333;">match_code</span></span>
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<pre style="margin: 0;">+<span id="LC770" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- match the old environment and stack against the input</span></span>
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771
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<pre style="margin: 0;">+<span id="LC771" class="line" lang="haskell"> <span class="n" style="color: #333;">select_code</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">matchEnvStack</span> <span class="n" style="color: #333;">env_ids</span> <span class="n" style="color: #333;">stack_id</span> <span class="n" style="color: #333;">param_code</span></span>
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772
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<pre style="margin: 0;">+<span id="LC772" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">do_premap</span> <span class="n" style="color: #333;">ids</span> <span class="n" style="color: #333;">in_ty</span> <span class="n" style="color: #333;">in_ty'</span> <span class="n" style="color: #333;">res_ty</span> <span class="n" style="color: #333;">select_code</span> <span class="n" style="color: #333;">core_body</span><span class="p">,</span></span>
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773
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<pre style="margin: 0;">+<span id="LC773" class="line" lang="haskell"> <span class="n" style="color: #333;">free_vars</span> <span class="p">`</span><span class="n" style="color: #333;">uniqDSetMinusUniqSet</span><span class="p">`</span> <span class="n" style="color: #333;">pat_vars</span><span class="p">)</span></span>
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774
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<pre style="margin: 0;">+<span id="LC774" class="line" lang="haskell"></span>
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775
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<pre style="margin: 0;"> <span id="LC775" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{-</span></span>
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<pre style="margin: 0;"> <span id="LC776" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Translation of command judgements of the form</span></span>
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<pre style="margin: 0;"> <span id="LC777" class="line" lang="haskell"></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/8bfb0219587b969d5c8f723c46d433e9493958b4...f4d3773c7f4209cd3a0495ab9a29b978da48e2ff#e011edcbdb6414ff00022ab5c1eeee88906a53ab"><strong>compiler/GHC/HsToCore/Coverage.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -861,6 +861,8 @@ addTickHsCmd (HsCmdCase x e mgs) =</td>
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861
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<pre style="margin: 0;"> <span id="LC861" class="line" lang="haskell"> <span class="n" style="color: #333;">liftM2</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdCase</span> <span class="n" style="color: #333;">x</span><span class="p">)</span></span>
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862
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862
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<pre style="margin: 0;"> <span id="LC862" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">addTickLHsExpr</span> <span class="n" style="color: #333;">e</span><span class="p">)</span></span>
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863
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<pre style="margin: 0;"> <span id="LC863" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">addTickCmdMatchGroup</span> <span class="n" style="color: #333;">mgs</span><span class="p">)</span></span>
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864
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<pre style="margin: 0;">+<span id="LC864" class="line" lang="haskell"><span class="n" style="color: #333;">addTickHsCmd</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdLamCase</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">mgs</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span></span>
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865
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<pre style="margin: 0;">+<span id="LC865" class="line" lang="haskell"> <span class="n" style="color: #333;">liftM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdLamCase</span> <span class="n" style="color: #333;">x</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">addTickCmdMatchGroup</span> <span class="n" style="color: #333;">mgs</span><span class="p">)</span></span>
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864
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866
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<pre style="margin: 0;"> <span id="LC866" class="line" lang="haskell"><span class="n" style="color: #333;">addTickHsCmd</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdIf</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">cnd</span> <span class="n" style="color: #333;">e1</span> <span class="n" style="color: #333;">c2</span> <span class="n" style="color: #333;">c3</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span></span>
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865
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867
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<pre style="margin: 0;"> <span id="LC867" class="line" lang="haskell"> <span class="n" style="color: #333;">liftM3</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdIf</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">cnd</span><span class="p">)</span></span>
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866
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868
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<pre style="margin: 0;"> <span id="LC868" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">addBinTickLHsExpr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">BinBox</span> <span class="kt" style="color: #458; font-weight: 600;">CondBinBox</span><span class="p">)</span> <span class="n" style="color: #333;">e1</span><span class="p">)</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/8bfb0219587b969d5c8f723c46d433e9493958b4...f4d3773c7f4209cd3a0495ab9a29b978da48e2ff#649144a78135a23cabfc90dd83c4aabf448eb6ab"><strong>compiler/GHC/Iface/Ext/Ast.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1240,6 +1240,9 @@ instance ( a ~ GhcPass p</td>
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1240
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1240
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<pre style="margin: 0;"> <span id="LC1240" class="line" lang="haskell"> <span class="p">[</span> <span class="n" style="color: #333;">toHie</span> <span class="n" style="color: #333;">expr</span></span>
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1241
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1241
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<pre style="margin: 0;"> <span id="LC1241" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">toHie</span> <span class="n" style="color: #333;">alts</span></span>
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1242
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1242
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<pre style="margin: 0;"> <span id="LC1242" class="line" lang="haskell"> <span class="p">]</span></span>
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1243
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<pre style="margin: 0;">+<span id="LC1243" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">HsCmdLamCase</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">alts</span> <span class="o" style="font-weight: 600;">-></span></span>
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1244
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<pre style="margin: 0;">+<span id="LC1244" class="line" lang="haskell"> <span class="p">[</span> <span class="n" style="color: #333;">toHie</span> <span class="n" style="color: #333;">alts</span></span>
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1245
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<pre style="margin: 0;">+<span id="LC1245" class="line" lang="haskell"> <span class="p">]</span></span>
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1246
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<pre style="margin: 0;"> <span id="LC1246" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">HsCmdIf</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">b</span> <span class="n" style="color: #333;">c</span> <span class="o" style="font-weight: 600;">-></span></span>
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1244
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1247
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<pre style="margin: 0;"> <span id="LC1247" class="line" lang="haskell"> <span class="p">[</span> <span class="n" style="color: #333;">toHie</span> <span class="n" style="color: #333;">a</span></span>
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1248
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<pre style="margin: 0;"> <span id="LC1248" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">toHie</span> <span class="n" style="color: #333;">b</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2765,11 +2765,10 @@ aexp :: { ECP }</td>
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<pre style="margin: 0;"> <span id="LC2765" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">mj</span> <span class="kt" style="color: #458; font-weight: 600;">AnnLet</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">1</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">mj</span> <span class="kt" style="color: #458; font-weight: 600;">AnnIn</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">3</span></span>
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<pre style="margin: 0;"> <span id="LC2766" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">:</span><span class="p">(</span><span class="n" style="color: #333;">fst</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">unLoc</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">2</span><span class="p">))</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC2767" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="sc" style="color: #d14;">'</span><span class="se" style="color: #d14;">\\</span><span class="sc" style="color: #d14;">'</span> <span class="sc" style="color: #d14;">'l</span><span class="err" style="color: #a61717; background-color: #e3d2d2;">c</span><span class="n" style="color: #333;">ase'</span> <span class="n" style="color: #333;">altslist</span></span>
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<pre style="margin: 0;">-<span id="LC2768" class="line" lang="haskell"> <span class="p">{</span><span class="o" style="font-weight: 600;">%</span> <span class="n" style="color: #333;">runPV</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">3</span> <span class="o" style="font-weight: 600;">>>=</span> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">3</span> <span class="o" style="font-weight: 600;">-></span></span>
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<pre style="margin: 0;">-<span id="LC2769" class="line" lang="haskell"> <span class="n" style="color: #333;">fmap</span> <span class="n" style="color: #333;">ecpFromExp</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">-<span id="LC2770" class="line" lang="haskell"> <span class="n" style="color: #333;">ams</span> <span class="p">(</span><span class="n" style="color: #333;">sLL</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">1</span> <span class="o" style="font-weight: 600;">$></span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">HsLamCase</span> <span class="n" style="color: #333;">noExtField</span></span>
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<pre style="margin: 0;">+<span id="LC2768" class="line" lang="haskell"> <span class="p">{</span> <span class="kt" style="color: #458; font-weight: 600;">ECP</span> <span class="o" style="font-weight: 600;">$</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">3</span> <span class="o" style="font-weight: 600;">>>=</span> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">3</span> <span class="o" style="font-weight: 600;">-></span></span>
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<pre style="margin: 0;">+<span id="LC2769" class="line" lang="haskell"> <span class="n" style="color: #333;">amms</span> <span class="p">(</span><span class="n" style="color: #333;">mkHsLamCasePV</span> <span class="p">(</span><span class="n" style="color: #333;">comb2</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">1</span> <span class="o" style="font-weight: 600;">$></span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC2770" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">mkMatchGroup</span> <span class="kt" style="color: #458; font-weight: 600;">FromSource</span> <span class="p">(</span><span class="n" style="color: #333;">snd</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">unLoc</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">3</span><span class="p">)))</span></span>
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<pre style="margin: 0;">-<span id="LC2772" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">mj</span> <span class="kt" style="color: #458; font-weight: 600;">AnnLam</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">1</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">mj</span> <span class="kt" style="color: #458; font-weight: 600;">AnnCase</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">2</span><span class="o" style="font-weight: 600;">:</span><span class="p">(</span><span class="n" style="color: #333;">fst</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">unLoc</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">3</span><span class="p">))</span> <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC2771" class="line" lang="haskell"> <span class="idiff left right"> </span><span class="p">(</span><span class="n" style="color: #333;">mj</span> <span class="kt" style="color: #458; font-weight: 600;">AnnLam</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">1</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">mj</span> <span class="kt" style="color: #458; font-weight: 600;">AnnCase</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">2</span><span class="o" style="font-weight: 600;">:</span><span class="p">(</span><span class="n" style="color: #333;">fst</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">unLoc</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">3</span><span class="p">))</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC2772" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="sc" style="color: #d14;">'i</span><span class="err" style="color: #a61717; background-color: #e3d2d2;">f</span><span class="sc" style="color: #d14;">' </span><span class="err" style="color: #a61717; background-color: #e3d2d2;">e</span><span class="n" style="color: #333;">xp</span> <span class="n" style="color: #333;">optSemi</span> <span class="sc" style="color: #d14;">'t</span><span class="err" style="color: #a61717; background-color: #e3d2d2;">h</span><span class="n" style="color: #333;">en'</span> <span class="n" style="color: #333;">exp</span> <span class="n" style="color: #333;">optSemi</span> <span class="sc" style="color: #d14;">'e</span><span class="err" style="color: #a61717; background-color: #e3d2d2;">l</span><span class="n" style="color: #333;">se'</span> <span class="n" style="color: #333;">exp</span></span>
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<pre style="margin: 0;"> <span id="LC2773" class="line" lang="haskell"> <span class="p">{</span><span class="o" style="font-weight: 600;">%</span> <span class="n" style="color: #333;">runECP_P</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">2</span> <span class="o" style="font-weight: 600;">>>=</span> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">2</span> <span class="o" style="font-weight: 600;">-></span></span>
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<pre style="margin: 0;"> <span id="LC2774" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">ECP</span> <span class="o" style="font-weight: 600;">$</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2886,11 +2885,11 @@ aexp2 :: { ECP }</td>
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<pre style="margin: 0;"> <span id="LC2885" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">quasiquote</span> <span class="p">{</span> <span class="kt" style="color: #458; font-weight: 600;">ECP</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">mkHsSplicePV</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">1</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC2886" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC2887" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- arrow notation extension</span></span>
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<pre style="margin: 0;">-<span id="LC2889" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="sc" style="color: #d14;">'(</span><span class="err" style="color: #a61717; background-color: #e3d2d2;">|</span><span class="sc" style="color: #d14;">' </span><span class="err" style="color: #a61717; background-color: #e3d2d2;">a</span><span class="n" style="color: #333;">exp<span class="idiff left right">2</span></span> <span class="n" style="color: #333;">cmdargs</span> <span class="sc" style="color: #d14;">'|</span><span class="err" style="color: #a61717; background-color: #e3d2d2;">)</span><span class="sc" style="color: #d14;">' </span><span class="err" style="color: #a61717; background-color: #e3d2d2;"> </span><span class="p">{</span><span class="o" style="font-weight: 600;">%</span> <span class="n" style="color: #333;">runECP_P</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">2</span> <span class="o" style="font-weight: 600;">>>=</span> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">2</span> <span class="o" style="font-weight: 600;">-></span></span>
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<pre style="margin: 0;">-<span id="LC2890" class="line" lang="haskell"> <span class="idiff left right"> </span><span class="n" style="color: #333;">fmap</span> <span class="n" style="color: #333;">ecpFromCmd</span> <span class="o" style="font-weight: 600;">$</span></span>
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2891
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<pre style="margin: 0;">-<span id="LC2891" class="line" lang="haskell"> <span class="idiff left right"> </span><span class="n" style="color: #333;">ams</span> <span class="p">(</span><span class="n" style="color: #333;">sLL</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">1</span> <span class="o" style="font-weight: 600;">$></span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">HsCmdArrForm</span> <span class="n" style="color: #333;">noExtField</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">2</span> <span class="kt" style="color: #458; font-weight: 600;">Prefix</span></span>
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<pre style="margin: 0;">-<span id="LC2892" class="line" lang="haskell"> <span class="idiff left right"> </span><span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="p">(</span><span class="n" style="color: #333;">reverse</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">3</span><span class="p">))</span></span>
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2893
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<pre style="margin: 0;">-<span id="LC2893" class="line" lang="haskell"> <span class="idiff left right"> </span><span class="p">[</span><span class="n" style="color: #333;">mu</span> <span class="kt" style="color: #458; font-weight: 600;">AnnOpenB</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">1</span><span class="p">,</span><span class="n" style="color: #333;">mu</span> <span class="kt" style="color: #458; font-weight: 600;">AnnCloseB</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">4</span><span class="p">]</span> <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC2888" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="sc" style="color: #d14;">'(</span><span class="err" style="color: #a61717; background-color: #e3d2d2;">|</span><span class="sc" style="color: #d14;">' </span><span class="err" style="color: #a61717; background-color: #e3d2d2;">a</span><span class="n" style="color: #333;">exp</span> <span class="n" style="color: #333;">cmdargs</span> <span class="sc" style="color: #d14;">'|</span><span class="err" style="color: #a61717; background-color: #e3d2d2;">)</span><span class="sc" style="color: #d14;">' </span><span class="err" style="color: #a61717; background-color: #e3d2d2;"> </span><span class="p">{</span><span class="o" style="font-weight: 600;">%</span> <span class="n" style="color: #333;">runECP_P</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">2</span> <span class="o" style="font-weight: 600;">>>=</span> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">2</span> <span class="o" style="font-weight: 600;">-></span></span>
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<pre style="margin: 0;">+<span id="LC2889" class="line" lang="haskell"> <span class="n" style="color: #333;">fmap</span> <span class="n" style="color: #333;">ecpFromCmd</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">+<span id="LC2890" class="line" lang="haskell"> <span class="n" style="color: #333;">ams</span> <span class="p">(</span><span class="n" style="color: #333;">sLL</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">1</span> <span class="o" style="font-weight: 600;">$></span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">HsCmdArrForm</span> <span class="n" style="color: #333;">noExtField</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">2</span> <span class="kt" style="color: #458; font-weight: 600;">Prefix</span></span>
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<pre style="margin: 0;">+<span id="LC2891" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="p">(</span><span class="n" style="color: #333;">reverse</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">3</span><span class="p">))</span></span>
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<pre style="margin: 0;">+<span id="LC2892" class="line" lang="haskell"> <span class="p">[</span><span class="n" style="color: #333;">mu</span> <span class="kt" style="color: #458; font-weight: 600;">AnnOpenB</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">1</span><span class="p">,</span><span class="n" style="color: #333;">mu</span> <span class="kt" style="color: #458; font-weight: 600;">AnnCloseB</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">4</span><span class="p">]</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC2893" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC2894" class="line" lang="haskell"><span class="n" style="color: #333;">splice_exp</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">{</span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span> <span class="p">}</span></span>
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2896
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<pre style="margin: 0;"> <span id="LC2895" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">splice_untyped</span> <span class="p">{</span> <span class="n" style="color: #333;">mapLoc</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsSpliceE</span> <span class="n" style="color: #333;">noExtField</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">1</span> <span class="p">}</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="2914" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="2913" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2914,8 +2913,9 @@ cmdargs :: { [LHsCmdTop GhcPs] }</td>
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2914
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2913
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<pre style="margin: 0;"> <span id="LC2913" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="cm" style="color: #998; font-style: italic;">{- empty -}</span> <span class="p">{</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span> <span class="p">}</span></span>
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2915
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2914
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<pre style="margin: 0;"> <span id="LC2914" class="line" lang="haskell"></span>
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2916
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2915
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<pre style="margin: 0;"> <span id="LC2915" class="line" lang="haskell"><span class="n" style="color: #333;">acmd</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">{</span> <span class="kt" style="color: #458; font-weight: 600;">LHsCmdTop</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span> <span class="p">}</span></span>
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<pre style="margin: 0;">-<span id="LC2917" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">aexp2</span> <span class="p">{</span><span class="o" style="font-weight: 600;">%</span> <span class="n" style="color: #333;">runECP_P</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">1</span> <span class="o" style="font-weight: 600;">>>=</span> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="n" style="color: #333;">cmd</span> <span class="o" style="font-weight: 600;">-></span></span>
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<pre style="margin: 0;">-<span id="LC2918" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">sL1</span> <span class="n" style="color: #333;">cmd</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">HsCmdTop</span> <span class="n" style="color: #333;">noExtField</span> <span class="n" style="color: #333;">cmd</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC2916" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">aexp</span> <span class="p">{</span><span class="o" style="font-weight: 600;">%</span> <span class="n" style="color: #333;">runECP_P</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">1</span> <span class="o" style="font-weight: 600;">>>=</span> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="n" style="color: #333;">cmd</span> <span class="o" style="font-weight: 600;">-></span></span>
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<pre style="margin: 0;">+<span id="LC2917" class="line" lang="haskell"> <span class="n" style="color: #333;">runPV</span> <span class="p">(</span><span class="n" style="color: #333;">checkCmdBlockArguments</span> <span class="n" style="color: #333;">cmd</span><span class="p">)</span> <span class="o" style="font-weight: 600;">>>=</span> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span></span>
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<pre style="margin: 0;">+<span id="LC2918" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">sL1</span> <span class="n" style="color: #333;">cmd</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">HsCmdTop</span> <span class="n" style="color: #333;">noExtField</span> <span class="n" style="color: #333;">cmd</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC2919" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC2920" class="line" lang="haskell"><span class="n" style="color: #333;">cvtopbody</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">{</span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">AddAnn</span><span class="p">],[</span><span class="kt" style="color: #458; font-weight: 600;">LHsDecl</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span><span class="p">])</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC2921" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">:</span> <span class="sc" style="color: #d14;">'{'</span> <span class="n" style="color: #333;">cvtopdecls0</span> <span class="sc" style="color: #d14;">'}'</span> <span class="p">{</span> <span class="p">([</span><span class="n" style="color: #333;">mj</span> <span class="kt" style="color: #458; font-weight: 600;">AnnOpenC</span> <span class="o" style="font-weight: 600;">$</span><span class="mi" style="color: #099;">1</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/8bfb0219587b969d5c8f723c46d433e9493958b4...f4d3773c7f4209cd3a0495ab9a29b978da48e2ff#446cb12ca6cefaf1c6eb79b7db643632744263c7"><strong>compiler/GHC/Parser/PostProcess.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -53,7 +53,7 @@ module GHC.Parser.PostProcess (</td>
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<pre style="margin: 0;"> <span id="LC53" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Bunch of functions in the parser monad for</span></span>
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<pre style="margin: 0;"> <span id="LC54" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- checking and constructing values</span></span>
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<pre style="margin: 0;"> <span id="LC55" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">checkImportDecl</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC56" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">checkExpBlockArguments</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC56" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">checkExpBlockArguments</span><span class="p">,</span><span class="idiff left"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff">checkCmdBlockArguments</span></span><span class="p"><span class="idiff right">,</span></span></span>
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<pre style="margin: 0;"> <span id="LC57" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">checkPrecP</span><span class="p">,</span> <span class="c1" style="color: #998; font-style: italic;">-- Int -> P Int</span></span>
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<pre style="margin: 0;"> <span id="LC58" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">checkContext</span><span class="p">,</span> <span class="c1" style="color: #998; font-style: italic;">-- HsType -> P HsContext</span></span>
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<pre style="margin: 0;"> <span id="LC59" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">checkPattern</span><span class="p">,</span> <span class="c1" style="color: #998; font-style: italic;">-- HsExp -> P HsPat</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1760,6 +1760,8 @@ class b ~ (Body b) GhcPs => DisambECP b where</td>
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<pre style="margin: 0;"> <span id="LC1760" class="line" lang="haskell"> <span class="n" style="color: #333;">mkHsOpAppPV</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SrcSpan</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Located</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Located</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">InfixOp</span> <span class="n" style="color: #333;">b</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Located</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">PV</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Located</span> <span class="n" style="color: #333;">b</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC1761" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- | Disambiguate "case ... of ..."</span></span>
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<pre style="margin: 0;"> <span id="LC1762" class="line" lang="haskell"> <span class="n" style="color: #333;">mkHsCasePV</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SrcSpan</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">MatchGroup</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Located</span> <span class="n" style="color: #333;">b</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">PV</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Located</span> <span class="n" style="color: #333;">b</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC1763" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- | Disambiguate @\\case ...@ (lambda case)</span></span>
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<pre style="margin: 0;">+<span id="LC1764" class="line" lang="haskell"> <span class="n" style="color: #333;">mkHsLamCasePV</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SrcSpan</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">MatchGroup</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Located</span> <span class="n" style="color: #333;">b</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">PV</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Located</span> <span class="n" style="color: #333;">b</span><span class="p">)</span></span>
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1765
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<pre style="margin: 0;"> <span id="LC1765" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- | Function argument representation</span></span>
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<pre style="margin: 0;"> <span id="LC1766" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">FunArg</span> <span class="n" style="color: #333;">b</span></span>
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<pre style="margin: 0;"> <span id="LC1767" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- | Bring superclass constraints on FunArg into scope.</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1874,6 +1876,7 @@ instance DisambECP (HsCmd GhcPs) where</td>
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1876
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<pre style="margin: 0;"> <span id="LC1876" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">cmdArg</span> <span class="n" style="color: #333;">c</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="p">(</span><span class="n" style="color: #333;">getLoc</span> <span class="n" style="color: #333;">c</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">HsCmdTop</span> <span class="n" style="color: #333;">noExtField</span> <span class="n" style="color: #333;">c</span></span>
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1877
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<pre style="margin: 0;"> <span id="LC1877" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">HsCmdArrForm</span> <span class="n" style="color: #333;">noExtField</span> <span class="n" style="color: #333;">op</span> <span class="kt" style="color: #458; font-weight: 600;">Infix</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="p">[</span><span class="n" style="color: #333;">cmdArg</span> <span class="n" style="color: #333;">c1</span><span class="p">,</span> <span class="n" style="color: #333;">cmdArg</span> <span class="n" style="color: #333;">c2</span><span class="p">]</span></span>
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<pre style="margin: 0;"> <span id="LC1878" class="line" lang="haskell"> <span class="n" style="color: #333;">mkHsCasePV</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">c</span> <span class="n" style="color: #333;">mg</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdCase</span> <span class="n" style="color: #333;">noExtField</span> <span class="n" style="color: #333;">c</span> <span class="n" style="color: #333;">mg</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC1879" class="line" lang="haskell"> <span class="n" style="color: #333;">mkHsLamCasePV</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">mg</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdLamCase</span> <span class="n" style="color: #333;">noExtField</span> <span class="n" style="color: #333;">mg</span><span class="p">)</span></span>
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1880
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<pre style="margin: 0;"> <span id="LC1880" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">FunArg</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmd</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span></span>
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<pre style="margin: 0;"> <span id="LC1881" class="line" lang="haskell"> <span class="n" style="color: #333;">superFunArg</span> <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">m</span></span>
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1882
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<pre style="margin: 0;"> <span id="LC1882" class="line" lang="haskell"> <span class="n" style="color: #333;">mkHsAppPV</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">c</span> <span class="n" style="color: #333;">e</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1933" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1930,6 +1933,7 @@ instance DisambECP (HsExpr GhcPs) where</td>
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1933
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<pre style="margin: 0;"> <span id="LC1933" class="line" lang="haskell"> <span class="n" style="color: #333;">mkHsOpAppPV</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">e1</span> <span class="n" style="color: #333;">op</span> <span class="n" style="color: #333;">e2</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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1934
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<pre style="margin: 0;"> <span id="LC1934" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">OpApp</span> <span class="n" style="color: #333;">noExtField</span> <span class="n" style="color: #333;">e1</span> <span class="n" style="color: #333;">op</span> <span class="n" style="color: #333;">e2</span></span>
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<pre style="margin: 0;"> <span id="LC1935" class="line" lang="haskell"> <span class="n" style="color: #333;">mkHsCasePV</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">e</span> <span class="n" style="color: #333;">mg</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCase</span> <span class="n" style="color: #333;">noExtField</span> <span class="n" style="color: #333;">e</span> <span class="n" style="color: #333;">mg</span><span class="p">)</span></span>
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1936
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<pre style="margin: 0;">+<span id="LC1936" class="line" lang="haskell"> <span class="n" style="color: #333;">mkHsLamCasePV</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">mg</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsLamCase</span> <span class="n" style="color: #333;">noExtField</span> <span class="n" style="color: #333;">mg</span><span class="p">)</span></span>
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1933
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1937
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<pre style="margin: 0;"> <span id="LC1937" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">FunArg</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HsExpr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span></span>
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1934
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1938
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<pre style="margin: 0;"> <span id="LC1938" class="line" lang="haskell"> <span class="n" style="color: #333;">superFunArg</span> <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">m</span></span>
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1935
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1939
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<pre style="margin: 0;"> <span id="LC1939" class="line" lang="haskell"> <span class="n" style="color: #333;">mkHsAppPV</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">e1</span> <span class="n" style="color: #333;">e2</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="2014" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="2018" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2014,6 +2018,7 @@ instance DisambECP (PatBuilder GhcPs) where</td>
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2014
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2018
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<pre style="margin: 0;"> <span id="LC2018" class="line" lang="haskell"> <span class="n" style="color: #333;">superInfixOp</span> <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">m</span></span>
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2015
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2019
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<pre style="margin: 0;"> <span id="LC2019" class="line" lang="haskell"> <span class="n" style="color: #333;">mkHsOpAppPV</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">p1</span> <span class="n" style="color: #333;">op</span> <span class="n" style="color: #333;">p2</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">PatBuilderOpApp</span> <span class="n" style="color: #333;">p1</span> <span class="n" style="color: #333;">op</span> <span class="n" style="color: #333;">p2</span></span>
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2016
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2020
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<pre style="margin: 0;"> <span id="LC2020" class="line" lang="haskell"> <span class="n" style="color: #333;">mkHsCasePV</span> <span class="n" style="color: #333;">l</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addFatalError</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"(case ... of ...)-syntax in pattern"</span></span>
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2021
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<pre style="margin: 0;">+<span id="LC2021" class="line" lang="haskell"> <span class="n" style="color: #333;">mkHsLamCasePV</span> <span class="n" style="color: #333;">l</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addFatalError</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"(</span><span class="se" style="color: #d14;">\\</span><span class="s" style="color: #d14;">case ...)-syntax in pattern"</span></span>
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2017
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2022
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<pre style="margin: 0;"> <span id="LC2022" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">FunArg</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">PatBuilder</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">PatBuilder</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span></span>
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2018
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2023
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<pre style="margin: 0;"> <span id="LC2023" class="line" lang="haskell"> <span class="n" style="color: #333;">superFunArg</span> <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">m</span></span>
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2019
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2024
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<pre style="margin: 0;"> <span id="LC2024" class="line" lang="haskell"> <span class="n" style="color: #333;">mkHsAppPV</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">p1</span> <span class="n" style="color: #333;">p2</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">PatBuilderApp</span> <span class="n" style="color: #333;">p1</span> <span class="n" style="color: #333;">p2</span><span class="p">)</span></span>
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<li id="b47ece2bbb8303a5792c2fdc52394c8ed336e8a2">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/8bfb0219587b969d5c8f723c46d433e9493958b4...f4d3773c7f4209cd3a0495ab9a29b978da48e2ff#b47ece2bbb8303a5792c2fdc52394c8ed336e8a2"><strong>compiler/GHC/Rename/Expr.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -495,6 +495,10 @@ rnCmd (HsCmdCase x expr matches)</td>
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495
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495
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<pre style="margin: 0;"> <span id="LC495" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">new_matches</span><span class="p">,</span> <span class="n" style="color: #333;">ms_fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnMatchGroup</span> <span class="kt" style="color: #458; font-weight: 600;">CaseAlt</span> <span class="n" style="color: #333;">rnLCmd</span> <span class="n" style="color: #333;">matches</span></span>
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496
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496
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<pre style="margin: 0;"> <span id="LC496" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdCase</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">new_expr</span> <span class="n" style="color: #333;">new_matches</span><span class="p">,</span> <span class="n" style="color: #333;">e_fvs</span> <span class="p">`</span><span class="n" style="color: #333;">plusFV</span><span class="p">`</span> <span class="n" style="color: #333;">ms_fvs</span><span class="p">)</span> <span class="p">}</span></span>
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497
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497
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<pre style="margin: 0;"> <span id="LC497" class="line" lang="haskell"></span>
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498
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<pre style="margin: 0;">+<span id="LC498" class="line" lang="haskell"><span class="n" style="color: #333;">rnCmd</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdLamCase</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">matches</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC499" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">new_matches</span><span class="p">,</span> <span class="n" style="color: #333;">ms_fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnMatchGroup</span> <span class="kt" style="color: #458; font-weight: 600;">CaseAlt</span> <span class="n" style="color: #333;">rnLCmd</span> <span class="n" style="color: #333;">matches</span></span>
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<pre style="margin: 0;">+<span id="LC500" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdLamCase</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">new_matches</span><span class="p">,</span> <span class="n" style="color: #333;">ms_fvs</span><span class="p">)</span> <span class="p">}</span></span>
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501
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<pre style="margin: 0;">+<span id="LC501" class="line" lang="haskell"></span>
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498
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502
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<pre style="margin: 0;"> <span id="LC502" class="line" lang="haskell"><span class="n" style="color: #333;">rnCmd</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdIf</span> <span class="n" style="color: #333;">x</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">p</span> <span class="n" style="color: #333;">b1</span> <span class="n" style="color: #333;">b2</span><span class="p">)</span></span>
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499
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503
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<pre style="margin: 0;"> <span id="LC503" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">p'</span><span class="p">,</span> <span class="n" style="color: #333;">fvP</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnLExpr</span> <span class="n" style="color: #333;">p</span></span>
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504
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<pre style="margin: 0;"> <span id="LC504" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">b1'</span><span class="p">,</span> <span class="n" style="color: #333;">fvB1</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnLCmd</span> <span class="n" style="color: #333;">b1</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -540,6 +544,8 @@ methodNamesCmd (HsCmdLam _ match) = methodNamesMatch match</td>
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544
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<pre style="margin: 0;"> <span id="LC544" class="line" lang="haskell"></span>
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545
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<pre style="margin: 0;"> <span id="LC545" class="line" lang="haskell"><span class="n" style="color: #333;">methodNamesCmd</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdCase</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">matches</span><span class="p">)</span></span>
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542
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546
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<pre style="margin: 0;"> <span id="LC546" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">methodNamesMatch</span> <span class="n" style="color: #333;">matches</span> <span class="p">`</span><span class="n" style="color: #333;">addOneFV</span><span class="p">`</span> <span class="n" style="color: #333;">choiceAName</span></span>
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<pre style="margin: 0;">+<span id="LC547" class="line" lang="haskell"><span class="n" style="color: #333;">methodNamesCmd</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdLamCase</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">matches</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC548" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">methodNamesMatch</span> <span class="n" style="color: #333;">matches</span> <span class="p">`</span><span class="n" style="color: #333;">addOneFV</span><span class="p">`</span> <span class="n" style="color: #333;">choiceAName</span></span>
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<pre style="margin: 0;"> <span id="LC549" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC550" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--methodNamesCmd _ = emptyFVs</span></span>
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<pre style="margin: 0;"> <span id="LC551" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Other forms can't occur in commands, but it's not convenient</span></span>
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<li id="71fa5eb3ba70e1d3a6181a226c2c227d42f1eb7d">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/8bfb0219587b969d5c8f723c46d433e9493958b4...f4d3773c7f4209cd3a0495ab9a29b978da48e2ff#71fa5eb3ba70e1d3a6181a226c2c227d42f1eb7d"><strong>compiler/GHC/Tc/Gen/Arrow.hs</strong></a>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="151" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="151" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -151,13 +151,14 @@ tc_cmd env (HsCmdLet x (L l binds) (L body_loc body)) res_ty</td>
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151
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151
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<pre style="margin: 0;"> <span id="LC151" class="line" lang="haskell"><span class="n" style="color: #333;">tc_cmd</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">in_cmd</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdCase</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">scrut</span> <span class="n" style="color: #333;">matches</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">stk</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span></span>
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152
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152
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<pre style="margin: 0;"> <span id="LC152" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addErrCtxt</span> <span class="p">(</span><span class="n" style="color: #333;">cmdCtxt</span> <span class="n" style="color: #333;">in_cmd</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span> <span class="kr" style="font-weight: 600;">do</span></span>
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153
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153
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<pre style="margin: 0;"> <span id="LC153" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">scrut'</span><span class="p">,</span> <span class="n" style="color: #333;">scrut_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInferRho</span> <span class="n" style="color: #333;">scrut</span></span>
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154
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<pre style="margin: 0;">-<span id="LC154" class="line" lang="haskell"> <span class="n" style="color: #333;">matches'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left">MatchesCase</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">match_ctxt</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">scrut_ty</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">matches</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff right">mkCheckExpType</span></span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC154" class="line" lang="haskell"> <span class="n" style="color: #333;">matches'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc<span class="idiff left">CmdMatches</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">env</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">scrut_ty</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">matches</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">stk</span></span><span class="p"><span class="idiff right">,</span></span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC155" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdCase</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">scrut'</span> <span class="n" style="color: #333;">matches'</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC156" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">-<span id="LC157" class="line" lang="haskell"> <span class="n" style="color: #333;">match_ctxt</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">MC</span> <span class="p">{</span> <span class="n" style="color: #333;">mc_what</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">CaseAlt</span><span class="p">,</span></span>
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158
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<pre style="margin: 0;">-<span id="LC158" class="line" lang="haskell"> <span class="n" style="color: #333;">mc_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mc_body</span> <span class="p">}</span></span>
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<pre style="margin: 0;">-<span id="LC159" class="line" lang="haskell"> <span class="n" style="color: #333;">mc_body</span> <span class="n" style="color: #333;">body</span> <span class="n" style="color: #333;">res_ty'</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">res_ty'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">expTypeToType</span> <span class="n" style="color: #333;">res_ty'</span></span>
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<pre style="margin: 0;">-<span id="LC160" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">tcCmd</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">body</span> <span class="p">(</span><span class="n" style="color: #333;">stk</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty'</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC156" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC157" class="line" lang="haskell"><span class="n" style="color: #333;">tc_cmd</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">in_cmd</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdLamCase</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">matches</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">stk</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span></span>
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158
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<pre style="margin: 0;">+<span id="LC158" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addErrCtxt</span> <span class="p">(</span><span class="n" style="color: #333;">cmdCtxt</span> <span class="n" style="color: #333;">in_cmd</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">+<span id="LC159" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">co</span><span class="p">,</span> <span class="p">[</span><span class="n" style="color: #333;">scrut_ty</span><span class="p">],</span> <span class="n" style="color: #333;">stk'</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">matchExpectedCmdArgs</span> <span class="mi" style="color: #099;">1</span> <span class="n" style="color: #333;">stk</span></span>
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<pre style="margin: 0;">+<span id="LC160" class="line" lang="haskell"> <span class="n" style="color: #333;">matches'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcCmdMatches</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">scrut_ty</span> <span class="n" style="color: #333;">matches</span> <span class="p">(</span><span class="n" style="color: #333;">stk'</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC161" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">mkHsCmdWrap</span> <span class="p">(</span><span class="n" style="color: #333;">mkWpCastN</span> <span class="n" style="color: #333;">co</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdLamCase</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">matches'</span><span class="p">))</span></span>
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<pre style="margin: 0;"> <span id="LC162" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC163" class="line" lang="haskell"><span class="n" style="color: #333;">tc_cmd</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdIf</span> <span class="n" style="color: #333;">x</span> <span class="kt" style="color: #458; font-weight: 600;">NoSyntaxExprRn</span> <span class="n" style="color: #333;">pred</span> <span class="n" style="color: #333;">b1</span> <span class="n" style="color: #333;">b2</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span> <span class="c1" style="color: #998; font-style: italic;">-- Ordinary 'if'</span></span>
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<pre style="margin: 0;"> <span id="LC164" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">pred'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcLExpr</span> <span class="n" style="color: #333;">pred</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">boolTy</span><span class="p">)</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="331" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -330,6 +331,20 @@ tc_cmd _ cmd _</td>
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330
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331
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<pre style="margin: 0;"> <span id="LC331" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">failWithTc</span> <span class="p">(</span><span class="n" style="color: #333;">vcat</span> <span class="p">[</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"The expression"</span><span class="p">,</span> <span class="n" style="color: #333;">nest</span> <span class="mi" style="color: #099;">2</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">cmd</span><span class="p">),</span></span>
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331
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332
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<pre style="margin: 0;"> <span id="LC332" class="line" lang="haskell"> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"was found where an arrow command was expected"</span><span class="p">])</span></span>
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<pre style="margin: 0;"> <span id="LC333" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC334" class="line" lang="haskell"><span class="cd">-- | Typechecking for case command alternatives. Used for both</span></span>
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<pre style="margin: 0;">+<span id="LC335" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- 'HsCmdCase' and 'HsCmdLamCase'.</span></span>
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<pre style="margin: 0;">+<span id="LC336" class="line" lang="haskell"><span class="n" style="color: #333;">tcCmdMatches</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CmdEnv</span></span>
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<pre style="margin: 0;">+<span id="LC337" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span> <span class="c1" style="color: #998; font-style: italic;">-- ^ type of the scrutinee</span></span>
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<pre style="margin: 0;">+<span id="LC338" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">MatchGroup</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsCmd</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- ^ case alternatives</span></span>
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<pre style="margin: 0;">+<span id="LC339" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CmdType</span></span>
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<pre style="margin: 0;">+<span id="LC340" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">MatchGroup</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTcId</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsCmd</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTcId</span><span class="p">))</span></span>
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<pre style="margin: 0;">+<span id="LC341" class="line" lang="haskell"><span class="n" style="color: #333;">tcCmdMatches</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">scrut_ty</span> <span class="n" style="color: #333;">matches</span> <span class="p">(</span><span class="n" style="color: #333;">stk</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC342" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcMatchesCase</span> <span class="n" style="color: #333;">match_ctxt</span> <span class="n" style="color: #333;">scrut_ty</span> <span class="n" style="color: #333;">matches</span> <span class="p">(</span><span class="n" style="color: #333;">mkCheckExpType</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC343" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC344" class="line" lang="haskell"> <span class="n" style="color: #333;">match_ctxt</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">MC</span> <span class="p">{</span> <span class="n" style="color: #333;">mc_what</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">CaseAlt</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC345" class="line" lang="haskell"> <span class="n" style="color: #333;">mc_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mc_body</span> <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC346" class="line" lang="haskell"> <span class="n" style="color: #333;">mc_body</span> <span class="n" style="color: #333;">body</span> <span class="n" style="color: #333;">res_ty'</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">res_ty'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">expTypeToType</span> <span class="n" style="color: #333;">res_ty'</span></span>
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<pre style="margin: 0;">+<span id="LC347" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">tcCmd</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">body</span> <span class="p">(</span><span class="n" style="color: #333;">stk</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty'</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC348" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC349" class="line" lang="haskell"><span class="n" style="color: #333;">matchExpectedCmdArgs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Arity</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TcCoercionN</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcType</span><span class="p">],</span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC350" class="line" lang="haskell"><span class="n" style="color: #333;">matchExpectedCmdArgs</span> <span class="mi" style="color: #099;">0</span> <span class="n" style="color: #333;">ty</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/8bfb0219587b969d5c8f723c46d433e9493958b4...f4d3773c7f4209cd3a0495ab9a29b978da48e2ff#6a120b0673f8920127d8fffdaa16f01b90cc92d7"><strong>compiler/GHC/Tc/Utils/Zonk.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -995,6 +995,10 @@ zonkCmd env (HsCmdCase x expr ms)</td>
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995
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<pre style="margin: 0;"> <span id="LC995" class="line" lang="haskell"> <span class="n" style="color: #333;">new_ms</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zonkMatchGroup</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">zonkLCmd</span> <span class="n" style="color: #333;">ms</span></span>
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<pre style="margin: 0;"> <span id="LC996" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdCase</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">new_expr</span> <span class="n" style="color: #333;">new_ms</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC997" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC998" class="line" lang="haskell"><span class="n" style="color: #333;">zonkCmd</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdLamCase</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">ms</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC999" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="n" style="color: #333;">new_ms</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zonkMatchGroup</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">zonkLCmd</span> <span class="n" style="color: #333;">ms</span></span>
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<pre style="margin: 0;">+<span id="LC1000" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdLamCase</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">new_ms</span><span class="p">)</span></span>
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1001
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<pre style="margin: 0;">+<span id="LC1001" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1002" class="line" lang="haskell"><span class="n" style="color: #333;">zonkCmd</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsCmdIf</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">eCond</span> <span class="n" style="color: #333;">ePred</span> <span class="n" style="color: #333;">cThen</span> <span class="n" style="color: #333;">cElse</span><span class="p">)</span></span>
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1003
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<pre style="margin: 0;"> <span id="LC1003" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">env1</span><span class="p">,</span> <span class="n" style="color: #333;">new_eCond</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zonkSyntaxExpr</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">eCond</span></span>
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1004
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<pre style="margin: 0;"> <span id="LC1004" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">new_ePred</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zonkLExpr</span> <span class="n" style="color: #333;">env1</span> <span class="n" style="color: #333;">ePred</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/8bfb0219587b969d5c8f723c46d433e9493958b4...f4d3773c7f4209cd3a0495ab9a29b978da48e2ff#b421960e854c6cfa1e4ca830bd6a5fc6eef91168"><strong>docs/users_guide/8.12.1-notes.rst</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -104,6 +104,21 @@ Template Haskell</td>
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<pre style="margin: 0;"> <span id="LC104" class="line" lang="plaintext"> - The ``-XTemplateHaskellQuotes`` extension now allows nested splices as nested</span>
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<pre style="margin: 0;"> <span id="LC105" class="line" lang="plaintext"> splices do not lead directly to compile-time evaluation. (!2288)</span>
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<pre style="margin: 0;"> <span id="LC106" class="line" lang="plaintext"></span>
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<pre style="margin: 0;">+<span id="LC107" class="line" lang="plaintext">Arrow notation</span>
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<pre style="margin: 0;">+<span id="LC108" class="line" lang="plaintext">~~~~~~~~~~~~~~</span>
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<pre style="margin: 0;">+<span id="LC109" class="line" lang="plaintext"></span>
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<pre style="margin: 0;">+<span id="LC110" class="line" lang="plaintext"> - When combined with :extension:`Arrows`, the :extension:`LambdaCase` extension</span>
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<pre style="margin: 0;">+<span id="LC111" class="line" lang="plaintext"> now additionally allows ``\case`` syntax to be used as a command in ``proc``</span>
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<pre style="margin: 0;">+<span id="LC112" class="line" lang="plaintext"> notation.</span>
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<pre style="margin: 0;">+<span id="LC113" class="line" lang="plaintext"></span>
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<pre style="margin: 0;">+<span id="LC114" class="line" lang="plaintext"> - When combined with :extension:`Arrows`, the effects of the</span>
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<pre style="margin: 0;">+<span id="LC115" class="line" lang="plaintext"> :extension:`BlockArguments` extension now also apply to applications of</span>
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<pre style="margin: 0;">+<span id="LC116" class="line" lang="plaintext"> arrow control operators in ``(|`` banana brackets ``|)``: ::</span>
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<pre style="margin: 0;">+<span id="LC118" class="line" lang="plaintext"> (| untilA (increment -< x + y) do</span>
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119
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<pre style="margin: 0;">+<span id="LC119" class="line" lang="plaintext"> within 0.5 -< x</span>
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<pre style="margin: 0;">+<span id="LC120" class="line" lang="plaintext"> ... |)</span>
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<pre style="margin: 0;"> <span id="LC122" class="line" lang="plaintext">``ghc-prim`` library</span>
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<pre style="margin: 0;"> <span id="LC123" class="line" lang="plaintext">~~~~~~~~~~~~~~~~~~~~</span>
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<pre style="margin: 0;"> <span id="LC124" class="line" lang="plaintext"></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -182,4 +197,3 @@ for further change information.</td>
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<pre style="margin: 0;"> <span id="LC197" class="line" lang="plaintext"> libraries/unix/unix.cabal: Dependency of ``ghc`` library</span>
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<pre style="margin: 0;"> <span id="LC198" class="line" lang="plaintext"> libraries/Win32/Win32.cabal: Dependency of ``ghc`` library</span>
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<pre style="margin: 0;"> <span id="LC199" class="line" lang="plaintext"> libraries/xhtml/xhtml.cabal: Dependency of ``haddock`` executable</span></pre>
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<pre style="margin: 0;">-<span id="LC185" class="line" lang="plaintext"></span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/8bfb0219587b969d5c8f723c46d433e9493958b4...f4d3773c7f4209cd3a0495ab9a29b978da48e2ff#67a7e440f848e5233e24f587c2e02fde258d232a"><strong>docs/users_guide/exts/lambda_case.rst</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -25,4 +25,11 @@ Note that ``\case`` starts a layout, so you can write ::</td>
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<pre style="margin: 0;"> <span id="LC25" class="line" lang="plaintext"> ...</span>
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<pre style="margin: 0;"> <span id="LC26" class="line" lang="plaintext"> pN -> eN</span>
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<pre style="margin: 0;"> <span id="LC27" class="line" lang="plaintext"></span>
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<pre style="margin: 0;">+<span id="LC28" class="line" lang="plaintext">Additionally, since GHC 8.12.1, combining :extension:`LambdaCase` with</span>
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<pre style="margin: 0;">+<span id="LC29" class="line" lang="plaintext">:extension:`Arrows` allows ``\case`` syntax to be used as a command in</span>
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<pre style="margin: 0;">+<span id="LC30" class="line" lang="plaintext">``proc`` notation: ::</span>
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<pre style="margin: 0;"> <span id="LC31" class="line" lang="plaintext"></span>
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<pre style="margin: 0;">+<span id="LC32" class="line" lang="plaintext"> proc x -> (f -< x) `catchA` \case</span>
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<pre style="margin: 0;">+<span id="LC33" class="line" lang="plaintext"> p1 -> cmd1</span>
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<pre style="margin: 0;">+<span id="LC34" class="line" lang="plaintext"> ...</span>
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<pre style="margin: 0;">+<span id="LC35" class="line" lang="plaintext"> pN -> cmdN</span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/8bfb0219587b969d5c8f723c46d433e9493958b4...f4d3773c7f4209cd3a0495ab9a29b978da48e2ff#f9231f037487da31bca79eb6ea5aeb7e8fc524d5"><strong>testsuite/tests/arrows/should_run/ArrowLambdaCase.hs</strong></a>
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<pre style="margin: 0;">+<span id="LC1" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE Arrows, LambdaCase #-}</span></span>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">Main</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">main</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>
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3
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC4" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Control.Arrow</span></span>
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5
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<pre style="margin: 0;">+<span id="LC5" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"><span class="n" style="color: #333;">main</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="nb" style="color: #0086b3;">()</span></span>
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7
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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell"><span class="n" style="color: #333;">main</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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8
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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell"> <span class="n" style="color: #333;">putStrLn</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">foo</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="mi" style="color: #099;">42</span><span class="p">)</span></span>
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9
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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell"> <span class="n" style="color: #333;">putStrLn</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">foo</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="mi" style="color: #099;">500</span><span class="p">)</span></span>
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10
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<pre style="margin: 0;">+<span id="LC10" class="line" lang="haskell"> <span class="n" style="color: #333;">putStrLn</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">foo</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span></span>
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11
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<pre style="margin: 0;">+<span id="LC11" class="line" lang="haskell"></span>
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12
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<pre style="margin: 0;">+<span id="LC12" class="line" lang="haskell"><span class="n" style="color: #333;">foo</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">ArrowChoice</span> <span class="n" style="color: #333;">p</span> <span class="o" style="font-weight: 600;">=></span> <span class="n" style="color: #333;">p</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">)</span> <span class="kt" style="color: #458; font-weight: 600;">String</span></span>
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13
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<pre style="margin: 0;">+<span id="LC13" class="line" lang="haskell"><span class="n" style="color: #333;">foo</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">proc</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">-></span></span>
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14
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<pre style="margin: 0;">+<span id="LC14" class="line" lang="haskell"> <span class="p">(</span><span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">id</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="kr" style="font-weight: 600;">case</span></span>
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15
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<pre style="margin: 0;">+<span id="LC15" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">></span> <span class="mi" style="color: #099;">100</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">returnA</span> <span class="o" style="font-weight: 600;">-<</span> <span class="s" style="color: #d14;">"big "</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">show</span> <span class="n" style="color: #333;">x</span></span>
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16
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<pre style="margin: 0;">+<span id="LC16" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">returnA</span> <span class="o" style="font-weight: 600;">-<</span> <span class="s" style="color: #d14;">"small "</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">show</span> <span class="n" style="color: #333;">x</span></span>
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17
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<pre style="margin: 0;">+<span id="LC17" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">returnA</span> <span class="o" style="font-weight: 600;">-<</span> <span class="s" style="color: #d14;">"none"</span><span class="p">)</span></span>
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18
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<pre style="margin: 0;">+<span id="LC18" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span><span class="p">)</span> <span class="n" style="color: #333;">x</span></span></pre>
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<li id="a79ee3b41316cdb7be56fbdbc8603580f8076d53">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/8bfb0219587b969d5c8f723c46d433e9493958b4...f4d3773c7f4209cd3a0495ab9a29b978da48e2ff#a79ee3b41316cdb7be56fbdbc8603580f8076d53"><strong>testsuite/tests/arrows/should_run/ArrowLambdaCase.stdout</strong></a>
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<pre style="margin: 0;">+<span id="LC1" class="line" lang="plaintext">small 42</span>
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2
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">big 500</span>
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3
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext">none</span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/8bfb0219587b969d5c8f723c46d433e9493958b4...f4d3773c7f4209cd3a0495ab9a29b978da48e2ff#04f591b13f8003cfef6f11401c29ffa25d5db9d4"><strong>testsuite/tests/arrows/should_run/all.T</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -3,4 +3,4 @@ test('arrowrun002', when(fast(), skip), compile_and_run, [''])</td>
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<pre style="margin: 0;"> <span id="LC3" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">arrowrun003</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_and_run</span><span class="p">,</span> <span class="p">[''])</span></span>
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<pre style="margin: 0;"> <span id="LC4" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">arrowrun004</span><span class="p">',</span> <span class="nv" style="color: #008080;">when</span><span class="p">(</span><span class="nv" style="color: #008080;">fast</span><span class="p">(),</span> <span class="nv" style="color: #008080;">skip</span><span class="p">),</span> <span class="nv" style="color: #008080;">compile_and_run</span><span class="p">,</span> <span class="p">[''])</span></span>
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<pre style="margin: 0;"> <span id="LC5" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T3822</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_and_run</span><span class="p">,</span> <span class="p">[''])</span></span>
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<pre style="margin: 0;">-<span id="LC6" class="line" lang="perl"></span></pre>
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">ArrowLambdaCase</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_and_run</span><span class="p">,</span> <span class="p">[''])</span></span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/8bfb0219587b969d5c8f723c46d433e9493958b4...f4d3773c7f4209cd3a0495ab9a29b978da48e2ff#be44185983c46c584b5b5173d3de71bcd0d3454f"><strong>testsuite/tests/parser/should_compile/BlockArgumentsArrowCmds.hs</strong></a>
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<pre style="margin: 0;">+<span id="LC1" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE Arrows, BlockArguments #-}</span></span>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">BlockArgumentsArrowCmds</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC4" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC5" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Control.Arrow</span></span>
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell"><span class="n" style="color: #333;">cmdLam</span> <span class="o" style="font-weight: 600;">::</span> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">-></span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell"><span class="n" style="color: #333;">cmdLam</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">proc</span> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">id</span> <span class="nf" style="color: #900; font-weight: 600;">\</span><span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">-></span> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">>-</span> <span class="n" style="color: #333;">returnA</span> <span class="o" style="font-weight: 600;">|</span><span class="p">)</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC10" class="line" lang="haskell"><span class="n" style="color: #333;">cmdCase</span> <span class="o" style="font-weight: 600;">::</span> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">-></span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;">+<span id="LC11" class="line" lang="haskell"><span class="n" style="color: #333;">cmdCase</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">proc</span> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">id</span> <span class="kr" style="font-weight: 600;">case</span> <span class="nb" style="color: #0086b3;">()</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">+<span id="LC12" class="line" lang="haskell"> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">-></span> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">>-</span> <span class="n" style="color: #333;">returnA</span> <span class="o" style="font-weight: 600;">|</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC13" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC14" class="line" lang="haskell"><span class="n" style="color: #333;">cmdIf</span> <span class="o" style="font-weight: 600;">::</span> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">-></span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;">+<span id="LC15" class="line" lang="haskell"><span class="n" style="color: #333;">cmdIf</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">proc</span> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">id</span> <span class="kr" style="font-weight: 600;">if</span> <span class="kt" style="color: #458; font-weight: 600;">True</span> <span class="kr" style="font-weight: 600;">then</span> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">>-</span> <span class="n" style="color: #333;">returnA</span> <span class="kr" style="font-weight: 600;">else</span> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">>-</span> <span class="n" style="color: #333;">returnA</span> <span class="o" style="font-weight: 600;">|</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC16" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC17" class="line" lang="haskell"><span class="n" style="color: #333;">cmdLet</span> <span class="o" style="font-weight: 600;">::</span> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">-></span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;">+<span id="LC18" class="line" lang="haskell"><span class="n" style="color: #333;">cmdLet</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">proc</span> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">id</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span> <span class="nb" style="color: #0086b3;">()</span> <span class="kr" style="font-weight: 600;">in</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">>-</span> <span class="n" style="color: #333;">returnA</span> <span class="o" style="font-weight: 600;">|</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC19" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC20" class="line" lang="haskell"><span class="n" style="color: #333;">cmdDo</span> <span class="o" style="font-weight: 600;">::</span> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">-></span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;">+<span id="LC21" class="line" lang="haskell"><span class="n" style="color: #333;">cmdDo</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">proc</span> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">id</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">+<span id="LC22" class="line" lang="haskell"> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">>-</span> <span class="n" style="color: #333;">returnA</span> <span class="o" style="font-weight: 600;">|</span><span class="p">)</span></span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/8bfb0219587b969d5c8f723c46d433e9493958b4...f4d3773c7f4209cd3a0495ab9a29b978da48e2ff#9a1fda400de867f43dbfb681557071bd6b1f695a"><strong>testsuite/tests/parser/should_compile/ParserArrowLambdaCase.hs</strong></a>
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<pre style="margin: 0;">+<span id="LC1" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE Arrows, LambdaCase #-}</span></span>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">ParserArrowLambdaCase</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC4" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Control.Arrow</span></span>
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<pre style="margin: 0;">+<span id="LC5" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"><span class="n" style="color: #333;">foo</span> <span class="o" style="font-weight: 600;">::</span> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">-></span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell"><span class="n" style="color: #333;">foo</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">proc</span> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">id</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="kr" style="font-weight: 600;">case</span></span>
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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell"> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">-></span> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">>-</span> <span class="n" style="color: #333;">returnA</span><span class="p">)</span> <span class="o" style="font-weight: 600;">|</span><span class="p">)</span> <span class="nb" style="color: #0086b3;">()</span></span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/8bfb0219587b969d5c8f723c46d433e9493958b4...f4d3773c7f4209cd3a0495ab9a29b978da48e2ff#a43397658ba43ce6747320867b3a0330bcea2ea5"><strong>testsuite/tests/parser/should_compile/all.T</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -86,6 +86,7 @@ test('T3303', [], multimod_compile, ['T3303', '-v0'])</td>
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86
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<pre style="margin: 0;"> <span id="LC86" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T3741</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">[''])</span></span>
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87
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<pre style="margin: 0;"> <span id="LC87" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">DoAndIfThenElse</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">[''])</span></span>
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88
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<pre style="margin: 0;"> <span id="LC88" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">BlockArguments</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">[''])</span></span>
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89
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<pre style="margin: 0;">+<span id="LC89" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">BlockArgumentsArrowCmds</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">[''])</span></span>
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90
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<pre style="margin: 0;"> <span id="LC90" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">BlockArgumentsLambdaCase</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">[''])</span></span>
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91
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<pre style="margin: 0;"> <span id="LC91" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">NoBlockArguments</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">[''])</span></span>
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92
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<pre style="margin: 0;"> <span id="LC92" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">NondecreasingIndentation</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">[''])</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -93,6 +94,7 @@ test('mc15', normal, compile, [''])</td>
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94
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<pre style="margin: 0;"> <span id="LC94" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">mc16</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">[''])</span></span>
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94
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95
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<pre style="margin: 0;"> <span id="LC95" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">EmptyDecls</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">[''])</span></span>
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95
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96
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<pre style="margin: 0;"> <span id="LC96" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">ParserLambdaCase</span><span class="p">',</span> <span class="o" style="font-weight: 600;">[]</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">[''])</span></span>
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<pre style="margin: 0;">+<span id="LC97" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">ParserArrowLambdaCase</span><span class="p">',</span> <span class="o" style="font-weight: 600;">[]</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">[''])</span></span>
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98
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<pre style="margin: 0;"> <span id="LC98" class="line" lang="perl"></span>
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<pre style="margin: 0;"> <span id="LC99" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">ColumnPragma</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">[''])</span></span>
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98
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100
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<pre style="margin: 0;"> <span id="LC100" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T5243</span><span class="p">',</span> <span class="o" style="font-weight: 600;">[]</span><span class="p">,</span> <span class="nv" style="color: #008080;">multimod_compile</span><span class="p">,</span> <span class="p">['</span><span class="s1" style="color: #d14;">T5243</span><span class="p">',</span> <span class="p">''])</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/8bfb0219587b969d5c8f723c46d433e9493958b4...f4d3773c7f4209cd3a0495ab9a29b978da48e2ff#5c9f89a9dd9887880f9a292e6408cf663cfb2be9"><strong>testsuite/tests/parser/should_fail/NoBlockArgumentsFailArrowCmds.hs</strong></a>
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<pre style="margin: 0;">+<span id="LC1" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE Arrows #-}</span></span>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">NoBlockArgumentsFailArrowCmds</span> <span class="kr" style="font-weight: 600;">where</span></span>
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3
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"></span>
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4
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<pre style="margin: 0;">+<span id="LC4" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Control.Arrow</span></span>
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5
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<pre style="margin: 0;">+<span id="LC5" class="line" lang="haskell"></span>
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6
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"><span class="n" style="color: #333;">cmdLam</span> <span class="o" style="font-weight: 600;">::</span> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">-></span> <span class="nb" style="color: #0086b3;">()</span></span>
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7
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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell"><span class="n" style="color: #333;">cmdLam</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">proc</span> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">id</span> <span class="nf" style="color: #900; font-weight: 600;">\</span><span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">-></span> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">>-</span> <span class="n" style="color: #333;">returnA</span> <span class="o" style="font-weight: 600;">|</span><span class="p">)</span> <span class="nb" style="color: #0086b3;">()</span></span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/8bfb0219587b969d5c8f723c46d433e9493958b4...f4d3773c7f4209cd3a0495ab9a29b978da48e2ff#a41ce250abd8626247d38d0507f9e5bff90278be"><strong>testsuite/tests/parser/should_fail/NoBlockArgumentsFailArrowCmds.stderr</strong></a>
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<pre style="margin: 0;">+<span id="LC1" class="line" lang="plaintext"></span>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">NoBlockArgumentsFailArrowCmds.hs:7:27: error:</span>
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext"> Unexpected lambda command in function application:</span>
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<pre style="margin: 0;">+<span id="LC4" class="line" lang="plaintext"> \ () -> () >- returnA</span>
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<pre style="margin: 0;">+<span id="LC5" class="line" lang="plaintext"> You could write it with parentheses</span>
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="plaintext"> Or perhaps you meant to enable BlockArguments?</span></pre>
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<li id="3577fc796b73fe1f96c77f05fcdd73a8d4bc6f66">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/8bfb0219587b969d5c8f723c46d433e9493958b4...f4d3773c7f4209cd3a0495ab9a29b978da48e2ff#3577fc796b73fe1f96c77f05fcdd73a8d4bc6f66"><strong>testsuite/tests/parser/should_fail/all.T</strong></a>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="77" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="77" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -77,6 +77,7 @@ test('NoPatternSynonyms', normal, compile_fail, [''])</td>
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<pre style="margin: 0;"> <span id="LC77" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">NoBlockArgumentsFail</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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78
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78
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<pre style="margin: 0;"> <span id="LC78" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">NoBlockArgumentsFail2</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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79
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79
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<pre style="margin: 0;"> <span id="LC79" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">NoBlockArgumentsFail3</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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80
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<pre style="margin: 0;">+<span id="LC80" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">NoBlockArgumentsFailArrowCmds</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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80
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81
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<pre style="margin: 0;"> <span id="LC81" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">NondecreasingIndentationFail</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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81
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82
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<pre style="margin: 0;"> <span id="LC82" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">readFailTraditionalRecords1</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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82
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83
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<pre style="margin: 0;"> <span id="LC83" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">readFailTraditionalRecords2</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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