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<h3>

Ben Gamari 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/25c02ea172ef1dad2d12d8baff6ce57a68bf4127">25c02ea1</a></strong>

<div>

<span>by Ryan Scott</span>

<i>at 2019-04-04T08:29:29Z</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Fix #16518 with some more kind-splitting smarts

This patch corrects two simple oversights that led to #16518:

1. `HsUtils.typeToLHsType` was taking visibility into account in the

   `TyConApp` case, but not the `AppTy` case. I've factored out the

   visibility-related logic into its own `go_app` function and now

   invoke `go_app` from both the `TyConApp` and `AppTy` cases.

2. `Type.fun_kind_arg_flags` did not properly split kinds with

   nested `forall`s, such as

   `(forall k. k -> Type) -> (forall k. k -> Type)`. This was simply

   because `fun_kind_arg_flags`'s `FunTy` case always bailed out and

   assumed all subsequent arguments were `Required`, which clearly

   isn't the case for nested `forall`s. I tweaked the `FunTy` case

   to recur on the result kind.

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/51fd357119b357c52e990ccce9059c423cc49406">51fd3571</a></strong>

<div>

<span>by Ryan Scott</span>

<i>at 2019-04-04T08:35:39Z</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Use funPrec, not topPrec, to parenthesize GADT argument types

A simple oversight. Fixes #16527.

</pre>

</li>

</ul>

<h4>9 changed files:</h4>

<ul>

<li class="file-stats">

<a href="#28c051307439bf9d329b194a82b4eb92928d4e99">

compiler/hsSyn/HsUtils.hs

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</li>

<li class="file-stats">

<a href="#09d8bceab47b805883c4f6a95dcc944b6aa989af">

compiler/iface/IfaceSyn.hs

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<li class="file-stats">

<a href="#07ce9a046fb8ea6659690020b0a8551d94cfdf1c">

compiler/types/Type.hs

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<li class="file-stats">

<a href="#9c70d64159bbd8cd0718249718cf3d2c286be6c7">

<span class="new-file">

+

testsuite/tests/deriving/should_compile/T16518.hs

</span>

</a>

</li>

<li class="file-stats">

<a href="#e7bc29da08da2be1b3bd264c751322dc3e8c1905">

testsuite/tests/deriving/should_compile/all.T

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<li class="file-stats">

<a href="#79651925de0222571335b84d2e4099fdadbfdcf8">

<span class="new-file">

+

testsuite/tests/ghci/scripts/T16527.hs

</span>

</a>

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<li class="file-stats">

<a href="#a012dae3833ff67fdc3e7ff2f75c6e63a0412209">

<span class="new-file">

+

testsuite/tests/ghci/scripts/T16527.script

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<li class="file-stats">

<a href="#a4a430318f4cbf85277397c1d602c7f29591d2d6">

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+

testsuite/tests/ghci/scripts/T16527.stdout

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<li class="file-stats">

<a href="#080fb38cc741d3f1a476696b3373ab7cf48c2aaa">

testsuite/tests/ghci/scripts/all.T

</a>

</li>

</ul>

<h4>Changes:</h4>

<li id="28c051307439bf9d329b194a82b4eb92928d4e99">

<a href="https://gitlab.haskell.org/ghc/ghc/compare/75abaaead796415cf2b5da610f4b3ee75b9d7759...51fd357119b357c52e990ccce9059c423cc49406#28c051307439bf9d329b194a82b4eb92928d4e99"><strong>compiler/hsSyn/HsUtils.hs</strong></a>

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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="106" 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">@@ -106,7 +106,7 @@ import TcEvidence</td>

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<pre style="margin: 0;"> <span id="LC106" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">RdrName</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC107" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Var</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="108" 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="LC108" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">TyCoRep</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC109" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Type</span>   <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">tyConArgFlags</span> <span class="p">)</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="109" 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="LC109" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Type</span>   <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;"><span class="idiff left">appTyArgFlags</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff">splitAppTys</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff right"> </span><span class="nf" style="color: #900; font-weight: 600;">tyConArgFlags</span> <span class="p">)</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC110" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">TysWiredIn</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">unitTy</span> <span class="p">)</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC111" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">TcType</span></span>

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<pre style="margin: 0;"> <span id="LC112" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">DataCon</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="665" 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="665" 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">@@ -665,7 +665,6 @@ typeToLHsType ty</td>

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<pre style="margin: 0;"> <span id="LC665" class="line" lang="haskell">                          <span class="p">,</span> <span class="n" style="color: #333;">hst_xforall</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">noExt</span></span>

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<pre style="margin: 0;"> <span id="LC666" class="line" lang="haskell">                          <span class="p">,</span> <span class="n" style="color: #333;">hst_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">tau</span> <span class="p">})</span></span>

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<td class="diff-line-num old_line" data-linenumber="667" 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="LC667" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TyVarTy</span> <span class="n" style="color: #333;">tv</span><span class="p">)</span>         <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nlHsTyVar</span> <span class="p">(</span><span class="n" style="color: #333;">getRdrName</span> <span class="n" style="color: #333;">tv</span><span class="p">)</span></span>

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<pre style="margin: 0;">-<span id="LC668" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">AppTy</span> <span class="n" style="color: #333;">t1</span> <span class="n" style="color: #333;">t2</span><span class="p">)</span>        <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nlHsAppTy</span> <span class="p">(</span><span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">t1</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">t2</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC668" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LitTy</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">NumTyLit</span> <span class="n" style="color: #333;">n</span><span class="p">))</span></span>

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<pre style="margin: 0;"> <span id="LC669" class="line" lang="haskell">      <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="kt" style="color: #458; font-weight: 600;">HsTyLit</span> <span class="kt" style="color: #458; font-weight: 600;">NoExt</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsNumTy</span> <span class="kt" style="color: #458; font-weight: 600;">NoSourceText</span> <span class="n" style="color: #333;">n</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC670" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LitTy</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">StrTyLit</span> <span class="n" style="color: #333;">s</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">@@ -674,27 +673,35 @@ typeToLHsType ty</td>

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<pre style="margin: 0;"> <span id="LC673" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">tyConAppNeedsKindSig</span> <span class="kt" style="color: #458; font-weight: 600;">True</span> <span class="n" style="color: #333;">tc</span> <span class="p">(</span><span class="n" style="color: #333;">length</span> <span class="n" style="color: #333;">args</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC674" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- We must produce an explicit kind signature here to make certain</span></span>

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<pre style="margin: 0;"> <span id="LC675" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- programs kind-check. See Note [Kind signatures in typeToLHsType].</span></span>

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<pre style="margin: 0;">-<span id="LC677" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nlHsParTy</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="kt" style="color: #458; font-weight: 600;">HsKindSig</span> <span class="kt" style="color: #458; font-weight: 600;">NoExt</span> <span class="n" style="color: #333;"><span class="idiff left right">lhs_ty</span></span> <span class="p">(</span><span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="n" style="color: #333;">tcTypeKind</span> <span class="n" style="color: #333;">ty</span><span class="p">))</span></span>

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<pre style="margin: 0;">-<span id="LC678" 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;"><span class="idiff left right">lhs_ty</span></span></span>

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<pre style="margin: 0;">+<span id="LC676" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nlHsParTy</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="kt" style="color: #458; font-weight: 600;">HsKindSig</span> <span class="kt" style="color: #458; font-weight: 600;">NoExt</span> <span class="n" style="color: #333;"><span class="idiff left right">ty'</span></span> <span class="p">(</span><span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="n" style="color: #333;">tcTypeKind</span> <span class="n" style="color: #333;">ty</span><span class="p">))</span></span>

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<pre style="margin: 0;">+<span id="LC677" 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;"><span class="idiff left right">ty'</span></span></span>

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<pre style="margin: 0;"> <span id="LC678" class="line" lang="haskell">       <span class="kr" style="font-weight: 600;">where</span></span>

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<pre style="margin: 0;">-<span id="LC680" class="line" lang="haskell">        <span class="n" style="color: #333;">arg_flags</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">ArgFlag</span><span class="p">]</span></span>

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<pre style="margin: 0;">-<span id="LC681" class="line" lang="haskell">        <span class="n" style="color: #333;">arg_flags</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tyConArgFlags</span> <span class="n" style="color: #333;">tc</span> <span class="n" style="color: #333;">args</span></span>

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<pre style="margin: 0;">-<span id="LC682" class="line" lang="haskell"></span>

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<pre style="margin: 0;">-<span id="LC683" class="line" lang="haskell">        <span class="n" style="color: #333;">lhs_ty</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span></span>

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<pre style="margin: 0;">-<span id="LC684" class="line" lang="haskell">        <span class="n" style="color: #333;">lhs_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldl'</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">f</span> <span class="p">(</span><span class="n" style="color: #333;">arg</span><span class="p">,</span> <span class="n" style="color: #333;">flag</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span></span>

</pre>

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685

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<pre style="margin: 0;">-<span id="LC685" class="line" lang="haskell">                          <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">arg'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">arg</span> <span class="kr" style="font-weight: 600;">in</span></span>

</pre>

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686

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<pre style="margin: 0;">-<span id="LC686" class="line" lang="haskell">                          <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">flag</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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687

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<pre style="margin: 0;">-<span id="LC687" class="line" lang="haskell">                            <span class="kt" style="color: #458; font-weight: 600;">Inferred</span>  <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">f</span></span>

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688

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<pre style="margin: 0;">-<span id="LC688" class="line" lang="haskell">                            <span class="kt" style="color: #458; font-weight: 600;">Specified</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">f</span> <span class="p">`</span><span class="n" style="color: #333;">nlHsAppKindTy</span><span class="p">`</span> <span class="n" style="color: #333;">arg'</span></span>

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<pre style="margin: 0;">-<span id="LC689" class="line" lang="haskell">                            <span class="kt" style="color: #458; font-weight: 600;">Required</span>  <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">f</span> <span class="p">`</span><span class="n" style="color: #333;">nlHsAppTy</span><span class="p">`</span>     <span class="n" style="color: #333;">arg'</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC690" class="line" lang="haskell">                        <span class="p">(</span><span class="n" style="color: #333;">nlHsTyVar</span> <span class="p">(</span><span class="n" style="color: #333;">getRdrName</span> <span class="n" style="color: #333;">tc</span><span class="p">))</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC691" class="line" lang="haskell">                        <span class="p">(</span><span class="n" style="color: #333;">zip</span> <span class="n" style="color: #333;">args</span> <span class="n" style="color: #333;">arg_flags</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC679" class="line" lang="haskell">        <span class="n" style="color: #333;">ty'</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span></span>

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<pre style="margin: 0;">+<span id="LC680" class="line" lang="haskell">        <span class="n" style="color: #333;">ty'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go_app</span> <span class="p">(</span><span class="n" style="color: #333;">nlHsTyVar</span> <span class="p">(</span><span class="n" style="color: #333;">getRdrName</span> <span class="n" style="color: #333;">tc</span><span class="p">))</span> <span class="n" style="color: #333;">args</span> <span class="p">(</span><span class="n" style="color: #333;">tyConArgFlags</span> <span class="n" style="color: #333;">tc</span> <span class="n" style="color: #333;">args</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC681" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">ty</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">AppTy</span> <span class="p">{})</span>        <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go_app</span> <span class="p">(</span><span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">head</span><span class="p">)</span> <span class="n" style="color: #333;">args</span> <span class="p">(</span><span class="n" style="color: #333;">appTyArgFlags</span> <span class="n" style="color: #333;">head</span> <span class="n" style="color: #333;">args</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC682" class="line" lang="haskell">      <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC683" class="line" lang="haskell">        <span class="n" style="color: #333;">head</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Type</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC684" class="line" lang="haskell">        <span class="n" style="color: #333;">args</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">]</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC685" class="line" lang="haskell">        <span class="p">(</span><span class="n" style="color: #333;">head</span><span class="p">,</span> <span class="n" style="color: #333;">args</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">splitAppTys</span> <span class="n" style="color: #333;">ty</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC686" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CastTy</span> <span class="n" style="color: #333;">ty</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span>        <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">ty</span></span>

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693

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<td class="diff-line-num new_line" data-linenumber="687" 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">

687

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<pre style="margin: 0;"> <span id="LC687" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CoercionTy</span> <span class="n" style="color: #333;">co</span><span class="p">)</span>      <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pprPanic</span> <span class="s" style="color: #d14;">"toLHsSigWcType"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">co</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="694" 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">

694

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688

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC688" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="695" 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">

695

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<td class="diff-line-num new_line" data-linenumber="689" 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">

689

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<pre style="margin: 0;"> <span id="LC689" class="line" lang="haskell">         <span class="c1" style="color: #998; font-style: italic;">-- Source-language types have _invisible_ kind arguments,</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="696" 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">

696

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<td class="diff-line-num new_line" data-linenumber="690" 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">

690

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<pre style="margin: 0;"> <span id="LC690" class="line" lang="haskell">         <span class="c1" style="color: #998; font-style: italic;">-- so we must remove them here (#8563)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="697" 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">

697

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<td class="diff-line-num new_line" data-linenumber="691" 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">

691

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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC691" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="698" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="692" 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">

692

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<pre style="margin: 0;">+<span id="LC692" class="line" lang="haskell">    <span class="n" style="color: #333;">go_app</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span> <span class="c1" style="color: #998; font-style: italic;">-- The type being applied</span></span>

</pre>

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</td>

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693

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<pre style="margin: 0;">+<span id="LC693" 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;">Type</span><span class="p">]</span>        <span class="c1" style="color: #998; font-style: italic;">-- The argument types</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="698" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="694" 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">

694

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<pre style="margin: 0;">+<span id="LC694" 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;">ArgFlag</span><span class="p">]</span>     <span class="c1" style="color: #998; font-style: italic;">-- The argument types' visibilities</span></span>

</pre>

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695

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<pre style="margin: 0;">+<span id="LC695" class="line" lang="haskell">           <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span></span>

</pre>

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696

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<pre style="margin: 0;">+<span id="LC696" class="line" lang="haskell">    <span class="n" style="color: #333;">go_app</span> <span class="n" style="color: #333;">head</span> <span class="n" style="color: #333;">args</span> <span class="n" style="color: #333;">arg_flags</span> <span class="o" style="font-weight: 600;">=</span></span>

</pre>

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</td>

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697

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<pre style="margin: 0;">+<span id="LC697" class="line" lang="haskell">      <span class="n" style="color: #333;">foldl'</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">f</span> <span class="p">(</span><span class="n" style="color: #333;">arg</span><span class="p">,</span> <span class="n" style="color: #333;">flag</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="698" 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">

698

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<pre style="margin: 0;">+<span id="LC698" class="line" lang="haskell">               <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">arg'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">arg</span> <span class="kr" style="font-weight: 600;">in</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="699" 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">

699

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<pre style="margin: 0;">+<span id="LC699" class="line" lang="haskell">               <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">flag</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="700" 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">

700

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<pre style="margin: 0;">+<span id="LC700" class="line" lang="haskell">                 <span class="kt" style="color: #458; font-weight: 600;">Inferred</span>  <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">f</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="701" 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">

701

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<pre style="margin: 0;">+<span id="LC701" class="line" lang="haskell">                 <span class="kt" style="color: #458; font-weight: 600;">Specified</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">f</span> <span class="p">`</span><span class="n" style="color: #333;">nlHsAppKindTy</span><span class="p">`</span> <span class="n" style="color: #333;">arg'</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="702" 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">

702

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<pre style="margin: 0;">+<span id="LC702" class="line" lang="haskell">                 <span class="kt" style="color: #458; font-weight: 600;">Required</span>  <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">f</span> <span class="p">`</span><span class="n" style="color: #333;">nlHsAppTy</span><span class="p">`</span>     <span class="n" style="color: #333;">arg'</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="703" 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">

703

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<pre style="margin: 0;">+<span id="LC703" class="line" lang="haskell">             <span class="n" style="color: #333;">head</span> <span class="p">(</span><span class="n" style="color: #333;">zip</span> <span class="n" style="color: #333;">args</span> <span class="n" style="color: #333;">arg_flags</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="704" 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">

704

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<pre style="margin: 0;">+<span id="LC704" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="698" 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">

698

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<td class="diff-line-num new_line" data-linenumber="705" 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">

705

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<pre style="margin: 0;"> <span id="LC705" class="line" lang="haskell">    <span class="n" style="color: #333;">go_tv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyVar</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsTyVarBndr</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="699" 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">

699

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<td class="diff-line-num new_line" data-linenumber="706" 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">

706

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<pre style="margin: 0;"> <span id="LC706" class="line" lang="haskell">    <span class="n" style="color: #333;">go_tv</span> <span class="n" style="color: #333;">tv</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="kt" style="color: #458; font-weight: 600;">KindedTyVar</span> <span class="n" style="color: #333;">noExt</span> <span class="p">(</span><span class="n" style="color: #333;">noLoc</span> <span class="p">(</span><span class="n" style="color: #333;">getRdrName</span> <span class="n" style="color: #333;">tv</span><span class="p">))</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="700" 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">

700

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<td class="diff-line-num new_line" data-linenumber="707" 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">

707

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<pre style="margin: 0;"> <span id="LC707" class="line" lang="haskell">                                   <span class="p">(</span><span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="n" style="color: #333;">tyVarKind</span> <span class="n" style="color: #333;">tv</span><span class="p">))</span></span>

</pre>

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<br>

</li>

<li id="09d8bceab47b805883c4f6a95dcc944b6aa989af">

<a href="https://gitlab.haskell.org/ghc/ghc/compare/75abaaead796415cf2b5da610f4b3ee75b9d7759...51fd357119b357c52e990ccce9059c423cc49406#09d8bceab47b805883c4f6a95dcc944b6aa989af"><strong>compiler/iface/IfaceSyn.hs</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1034" 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="1034" 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">@@ -1034,7 +1034,7 @@ pprIfaceConDecl ss gadt_style tycon tc_binders parent</td>

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<td class="diff-line-num old_line" data-linenumber="1034" 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">

1034

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<td class="diff-line-num new_line" data-linenumber="1034" 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">

1034

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<pre style="margin: 0;"> <span id="LC1034" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- a compound field type is if it's preceded by a bang pattern.</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1035" 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">

1035

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<td class="diff-line-num new_line" data-linenumber="1035" 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">

1035

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<pre style="margin: 0;"> <span id="LC1035" class="line" lang="haskell">    <span class="n" style="color: #333;">pprFieldArgTy</span> <span class="p">(</span><span class="n" style="color: #333;">bang</span><span class="p">,</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ppr_arg_ty</span> <span class="p">(</span><span class="n" style="color: #333;">bang_prec</span> <span class="n" style="color: #333;">bang</span><span class="p">)</span> <span class="n" style="color: #333;">bang</span> <span class="n" style="color: #333;">ty</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1036" 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">

1036

</td>

<td class="diff-line-num new_line" data-linenumber="1036" 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">

1036

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<pre style="margin: 0;"> <span id="LC1036" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- If not using record syntax, a compound field type might need to be</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1037" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1037

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<td class="diff-line-num new_line old" data-linenumber="1037" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1037" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- parenthesize if one of the following holds:</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1038" 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="1037" 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">

1037

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<pre style="margin: 0;">+<span id="LC1037" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- parenthesize<span class="idiff left right">d</span> if one of the following holds:</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1038" 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">

1038

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<td class="diff-line-num new_line" data-linenumber="1038" 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">

1038

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<pre style="margin: 0;"> <span id="LC1038" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">--</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1039" 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">

1039

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<td class="diff-line-num new_line" data-linenumber="1039" 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">

1039

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<pre style="margin: 0;"> <span id="LC1039" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- 1. We're using Haskell98 syntax.</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1040" 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">

1040

</td>

<td class="diff-line-num new_line" data-linenumber="1040" 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">

1040

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<pre style="margin: 0;"> <span id="LC1040" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- 2. The field type is preceded with a bang pattern.</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1046" 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="1046" 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">@@ -1046,18 +1046,23 @@ pprIfaceConDecl ss gadt_style tycon tc_binders parent</td>

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<td class="diff-line-num old_line" data-linenumber="1046" 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">

1046

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<td class="diff-line-num new_line" data-linenumber="1046" 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">

1046

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<pre style="margin: 0;"> <span id="LC1046" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- If we're displaying the fields GADT-style, e.g.,</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1047" 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">

1047

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<td class="diff-line-num new_line" data-linenumber="1047" 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">

1047

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<pre style="margin: 0;"> <span id="LC1047" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">--</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1048" 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">

1048

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<td class="diff-line-num new_line" data-linenumber="1048" 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">

1048

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<pre style="margin: 0;"> <span id="LC1048" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">--   data Foo a where</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1049" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1049

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<td class="diff-line-num new_line old" data-linenumber="1049" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1049" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">--     MkFoo :: Maybe a -> Foo</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1050" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1049" 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">

1049

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<pre style="margin: 0;">+<span id="LC1049" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">--     MkFoo :: <span class="idiff left right">(Int -> Int) -> </span>Maybe a -> Foo</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1050" 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">

1050

</td>

<td class="diff-line-num new_line" data-linenumber="1050" 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">

1050

</td>

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<pre style="margin: 0;"> <span id="LC1050" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">--</span></span>

</pre>

</td>

</tr>

<tr class="line_holder old" id="" style="line-height: 1.6;">

<td class="diff-line-num old old_line" data-linenumber="1051" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1051

</td>

<td class="diff-line-num new_line old" data-linenumber="1051" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

</td>

<td class="line_content noteable_line old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">

<pre style="margin: 0;">-<span id="LC1051" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- Then there is no inherent need to parenthesize compound fields like</span></span>

</pre>

</td>

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<td class="diff-line-num old old_line" data-linenumber="1052" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1052

</td>

<td class="diff-line-num new_line old" data-linenumber="1051" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

</td>

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<pre style="margin: 0;">-<span id="LC1052" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- `Maybe a` (bang patterns notwithstanding). If we're displaying the</span></span>

</pre>

</td>

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<td class="diff-line-num old old_line" data-linenumber="1053" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1053

</td>

<td class="diff-line-num new_line old" data-linenumber="1051" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

</td>

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<pre style="margin: 0;">-<span id="LC1053" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- fields Haskell98-style, e.g.,</span></span>

</pre>

</td>

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<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="1054" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1051" 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">

1051

</td>

<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1051" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- Then we use `funPrec`, since that will ensure `Int -> Int` gets the</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="1054" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1052" 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">

1052

</td>

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<pre style="margin: 0;">+<span id="LC1052" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- parentheses that it requires, but simple compound types like `Maybe a`</span></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="1054" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1053" 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">

1053

</td>

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<pre style="margin: 0;">+<span id="LC1053" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- (which don't require parentheses in a function argument position) won't</span></span>

</pre>

</td>

</tr>

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<td class="diff-line-num new old_line" data-linenumber="1054" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1054" 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">

1054

</td>

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<pre style="margin: 0;">+<span id="LC1054" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- get them, assuming that there are no bang patterns (see bang_prec).</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1054" 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">

1054

</td>

<td class="diff-line-num new_line" data-linenumber="1055" 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">

1055

</td>

<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC1055" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">--</span></span>

</pre>

</td>

</tr>

<tr class="line_holder old" id="" style="line-height: 1.6;">

<td class="diff-line-num old old_line" data-linenumber="1055" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1055

</td>

<td class="diff-line-num new_line old" data-linenumber="1056" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

</td>

<td class="line_content noteable_line old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">

<pre style="margin: 0;">-<span id="LC1055" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- <span class="idiff left right">  data Foo a = MkFoo (Maybe a)</span></span></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="1056" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1056" 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">

1056

</td>

<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1056" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- <span class="idiff left right">If we're displaying the fields Haskell98-style, e.g.,</span></span></span>

</pre>

</td>

</tr>

<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="1056" 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">

1056

</td>

<td class="diff-line-num new_line" data-linenumber="1057" 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">

1057

</td>

<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC1057" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">--</span></span>

</pre>

</td>

</tr>

<tr class="line_holder old" id="" style="line-height: 1.6;">

<td class="diff-line-num old old_line" data-linenumber="1057" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1057

</td>

<td class="diff-line-num new_line old" data-linenumber="1058" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

</td>

<td class="line_content noteable_line old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">

<pre style="margin: 0;">-<span id="LC1057" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- Then we *must* parenthesize compound fields like (Maybe a).</span></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="1058" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1058" 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">

1058

</td>

<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1058" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">--   data Foo a = MkFoo (Int -> Int) (Maybe a)</span></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="1058" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1059" 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">

1059

</td>

<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1059" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">--</span></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="1058" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1060" 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">

1060

</td>

<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1060" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- Then not only must we parenthesize `Int -> Int`, we must also</span></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="1058" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1061" 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">

1061

</td>

<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1061" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- parenthesize compound fields like (Maybe a). Therefore, we pick</span></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="1058" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1062" 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">

1062

</td>

<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1062" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- `appPrec`, which has higher precedence than `funPrec`.</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1058" 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">

1058

</td>

<td class="diff-line-num new_line" data-linenumber="1063" 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">

1063

</td>

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<pre style="margin: 0;"> <span id="LC1063" class="line" lang="haskell">    <span class="n" style="color: #333;">gadt_prec</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">PprPrec</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1059" 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">

1059

</td>

<td class="diff-line-num new_line" data-linenumber="1064" 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">

1064

</td>

<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC1064" class="line" lang="haskell">    <span class="n" style="color: #333;">gadt_prec</span></span>

</pre>

</td>

</tr>

<tr class="line_holder old" id="" style="line-height: 1.6;">

<td class="diff-line-num old old_line" data-linenumber="1060" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1060

</td>

<td class="diff-line-num new_line old" data-linenumber="1065" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

</td>

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<pre style="margin: 0;">-<span id="LC1060" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">gadt_style</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;"><span class="idiff left right">top</span>Prec</span></span>

</pre>

</td>

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<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="1061" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1065" 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">

1065

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<pre style="margin: 0;">+<span id="LC1065" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">gadt_style</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;"><span class="idiff left right">fun</span>Prec</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1061" 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">

1061

</td>

<td class="diff-line-num new_line" data-linenumber="1066" 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">

1066

</td>

<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC1066" 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;">appPrec</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1062" 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">

1062

</td>

<td class="diff-line-num new_line" data-linenumber="1067" 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">

1067

</td>

<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC1067" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1063" 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">

1063

</td>

<td class="diff-line-num new_line" data-linenumber="1068" 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">

1068

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<pre style="margin: 0;"> <span id="LC1068" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- The presence of bang patterns or UNPACK annotations requires</span></span>

</pre>

</td>

</tr>

</table>

<br>

</li>

<li id="07ce9a046fb8ea6659690020b0a8551d94cfdf1c">

<a href="https://gitlab.haskell.org/ghc/ghc/compare/75abaaead796415cf2b5da610f4b3ee75b9d7759...51fd357119b357c52e990ccce9059c423cc49406#07ce9a046fb8ea6659690020b0a8551d94cfdf1c"><strong>compiler/types/Type.hs</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1698" 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="1698" 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">@@ -1698,6 +1698,21 @@ fun_kind_arg_flags = go emptyTCvSubst</td>

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<td class="diff-line-num old_line" data-linenumber="1698" 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">

1698

</td>

<td class="diff-line-num new_line" data-linenumber="1698" 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">

1698

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<pre style="margin: 0;"> <span id="LC1698" class="line" lang="haskell">        <span class="n" style="color: #333;">subst'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">extendTvSubst</span> <span class="n" style="color: #333;">subst</span> <span class="n" style="color: #333;">tv</span> <span class="n" style="color: #333;">arg_ty</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1699" 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">

1699

</td>

<td class="diff-line-num new_line" data-linenumber="1699" 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">

1699

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<pre style="margin: 0;"> <span id="LC1699" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">subst</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TyVarTy</span> <span class="n" style="color: #333;">tv</span><span class="p">)</span> <span class="n" style="color: #333;">arg_tys</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1700" 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">

1700

</td>

<td class="diff-line-num new_line" data-linenumber="1700" 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">

1700

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<pre style="margin: 0;"> <span id="LC1700" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">ki</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">lookupTyVar</span> <span class="n" style="color: #333;">subst</span> <span class="n" style="color: #333;">tv</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">subst</span> <span class="n" style="color: #333;">ki</span> <span class="n" style="color: #333;">arg_tys</span></span>

</pre>

</td>

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<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="1701" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1701" 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">

1701

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<pre style="margin: 0;">+<span id="LC1701" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- This FunTy case is important to handle kinds with nested foralls, such</span></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="1701" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1702" 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">

1702

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<pre style="margin: 0;">+<span id="LC1702" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- as this kind (inspired by #16518):</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="1701" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1703" 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">

1703

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<pre style="margin: 0;">+<span id="LC1703" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">--</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="1701" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1704" 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">

1704

</td>

<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1704" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">--   forall {k1} k2. k1 -> k2 -> forall k3. k3 -> Type</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="1701" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1705" 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">

1705

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<pre style="margin: 0;">+<span id="LC1705" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">--</span></span>

</pre>

</td>

</tr>

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<td class="diff-line-num new old_line" data-linenumber="1701" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1706" 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">

1706

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<pre style="margin: 0;">+<span id="LC1706" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- Here, we want to get the following ArgFlags:</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="1701" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1707" 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">

1707

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<pre style="margin: 0;">+<span id="LC1707" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">--</span></span>

</pre>

</td>

</tr>

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<td class="diff-line-num new old_line" data-linenumber="1701" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1708" 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">

1708

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<pre style="margin: 0;">+<span id="LC1708" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- [Inferred,   Specified, Required, Required, Specified, Required]</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="1701" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1709" 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">

1709

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<pre style="margin: 0;">+<span id="LC1709" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- forall {k1}. forall k2. k1 ->     k2 ->     forall k3. k3 ->     Type</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="1701" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1710" 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">

1710

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<pre style="margin: 0;">+<span id="LC1710" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">subst</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">FunTy</span><span class="p">{</span><span class="n" style="color: #333;">ft_af</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">af</span><span class="p">,</span> <span class="n" style="color: #333;">ft_res</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">res_ki</span><span class="p">})</span> <span class="p">(</span><span class="kr" style="font-weight: 600;">_</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">arg_tys</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1701" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1711" 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">

1711

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<pre style="margin: 0;">+<span id="LC1711" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">argf</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">subst</span> <span class="n" style="color: #333;">res_ki</span> <span class="n" style="color: #333;">arg_tys</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="1701" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1712" 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">

1712

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<td class="line_content new noteable_line" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1712" class="line" lang="haskell">      <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1701" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1713" 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">

1713

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<pre style="margin: 0;">+<span id="LC1713" class="line" lang="haskell">        <span class="n" style="color: #333;">argf</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">af</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="1701" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1714" 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">

1714

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<pre style="margin: 0;">+<span id="LC1714" class="line" lang="haskell">                 <span class="kt" style="color: #458; font-weight: 600;">VisArg</span>   <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Required</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="1701" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1715" 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">

1715

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<pre style="margin: 0;">+<span id="LC1715" class="line" lang="haskell">                 <span class="kt" style="color: #458; font-weight: 600;">InvisArg</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Inferred</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1701" 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">

1701

</td>

<td class="diff-line-num new_line" data-linenumber="1716" 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">

1716

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<pre style="margin: 0;"> <span id="LC1716" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">arg_tys</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">map</span> <span class="p">(</span><span class="n" style="color: #333;">const</span> <span class="kt" style="color: #458; font-weight: 600;">Required</span><span class="p">)</span> <span class="n" style="color: #333;">arg_tys</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1702" 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">

1702

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<td class="diff-line-num new_line" data-linenumber="1717" 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">

1717

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<pre style="margin: 0;"> <span id="LC1717" class="line" lang="haskell">                        <span class="c1" style="color: #998; font-style: italic;">-- something is ill-kinded. But this can happen</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1703" 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">

1703

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<td class="diff-line-num new_line" data-linenumber="1718" 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">

1718

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<pre style="margin: 0;"> <span id="LC1718" class="line" lang="haskell">                        <span class="c1" style="color: #998; font-style: italic;">-- when printing errors. Assume everything is Required.</span></span>

</pre>

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<br>

</li>

<li id="9c70d64159bbd8cd0718249718cf3d2c286be6c7">

<a href="https://gitlab.haskell.org/ghc/ghc/compare/75abaaead796415cf2b5da610f4b3ee75b9d7759...51fd357119b357c52e990ccce9059c423cc49406#9c70d64159bbd8cd0718249718cf3d2c286be6c7"><strong>testsuite/tests/deriving/should_compile/T16518.hs</strong></a>

<hr>

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<td class="diff-line-num new old_line" data-linenumber="0" 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="1" 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">

1

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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 GADTs #-}</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="0" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="2" 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">

2

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE GeneralizedNewtypeDeriving #-}</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="0" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="3" 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">

3

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE InstanceSigs #-}</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="0" 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="4" 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">

4

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<pre style="margin: 0;">+<span id="LC4" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE PolyKinds #-}</span></span>

</pre>

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5

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<pre style="margin: 0;">+<span id="LC5" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE RankNTypes #-}</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="6" 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">

6

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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE ScopedTypeVariables #-}</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE StandaloneDeriving #-}</span></span>

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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE TypeApplications #-}</span></span>

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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE TypeOperators #-}</span></span>

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<pre style="margin: 0;">+<span id="LC10" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">T16518</span> <span class="kr" style="font-weight: 600;">where</span></span>

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<pre style="margin: 0;">+<span id="LC11" class="line" lang="haskell"></span>

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<pre style="margin: 0;">+<span id="LC12" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Coerce</span></span>

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<pre style="margin: 0;">+<span id="LC13" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Kind</span></span>

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<pre style="margin: 0;">+<span id="LC14" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Type.Equality</span></span>

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<pre style="margin: 0;">+<span id="LC15" class="line" lang="haskell"></span>

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<pre style="margin: 0;">+<span id="LC16" 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="LC17" class="line" lang="haskell"></span>

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<pre style="margin: 0;">+<span id="LC18" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">class</span> <span class="kt" style="color: #458; font-weight: 600;">HTestEquality1</span> <span class="p">(</span><span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">forall</span> <span class="n" style="color: #333;">k</span><span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>

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<pre style="margin: 0;">+<span id="LC19" class="line" lang="haskell">  <span class="n" style="color: #333;">hTestEquality1</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">forall</span> <span class="n" style="color: #333;">k1</span> <span class="n" style="color: #333;">k2</span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">k1</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">k2</span><span class="p">)</span><span class="o" style="font-weight: 600;">.</span></span>

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<pre style="margin: 0;">+<span id="LC20" class="line" lang="haskell">                    <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">f</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;">Maybe</span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">:~~:</span> <span class="n" style="color: #333;">b</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC21" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">newtype</span> <span class="kt" style="color: #458; font-weight: 600;">T1</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">forall</span> <span class="n" style="color: #333;">k</span><span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">forall</span> <span class="n" style="color: #333;">k</span><span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>

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<pre style="margin: 0;">+<span id="LC22" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">MkT1</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">forall</span> <span class="p">(</span><span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">forall</span> <span class="n" style="color: #333;">k</span><span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">)</span> <span class="n" style="color: #333;">k</span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">k</span><span class="p">)</span><span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">T1</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">a</span></span>

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<pre style="margin: 0;">+<span id="LC23" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC24" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">deriving</span> <span class="kr" style="font-weight: 600;">instance</span> <span class="n" style="color: #333;">forall</span> <span class="p">(</span><span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">forall</span> <span class="n" style="color: #333;">k</span><span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">)</span><span class="o" style="font-weight: 600;">.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC25" class="line" lang="haskell">                  <span class="kt" style="color: #458; font-weight: 600;">HTestEquality1</span> <span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">HTestEquality1</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">T1</span> <span class="n" style="color: #333;">f</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC26" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC27" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC28" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC29" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">class</span> <span class="kt" style="color: #458; font-weight: 600;">HTestEquality2</span> <span class="p">(</span><span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">forall</span> <span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC30" class="line" lang="haskell">  <span class="n" style="color: #333;">hTestEquality2</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">forall</span> <span class="n" style="color: #333;">k1</span> <span class="n" style="color: #333;">k2</span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">k1</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">k2</span><span class="p">)</span><span class="o" style="font-weight: 600;">.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC31" class="line" lang="haskell">                    <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">k1</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">k2</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;">Maybe</span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">:~~:</span> <span class="n" style="color: #333;">b</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC32" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">newtype</span> <span class="kt" style="color: #458; font-weight: 600;">T2</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">forall</span> <span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">forall</span> <span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC33" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">MkT2</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">forall</span> <span class="p">(</span><span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">forall</span> <span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">)</span> <span class="n" style="color: #333;">k</span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">k</span><span class="p">)</span><span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">k</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">T2</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">k</span> <span class="n" style="color: #333;">a</span></span>

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<pre style="margin: 0;">+<span id="LC34" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC35" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">deriving</span> <span class="kr" style="font-weight: 600;">instance</span> <span class="n" style="color: #333;">forall</span> <span class="p">(</span><span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">forall</span> <span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">)</span><span class="o" style="font-weight: 600;">.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC36" class="line" lang="haskell">                  <span class="kt" style="color: #458; font-weight: 600;">HTestEquality2</span> <span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">HTestEquality2</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">T2</span> <span class="n" style="color: #333;">f</span><span class="p">)</span></span></pre>

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</table>

<br>

</li>

<li id="e7bc29da08da2be1b3bd264c751322dc3e8c1905">

<a href="https://gitlab.haskell.org/ghc/ghc/compare/75abaaead796415cf2b5da610f4b3ee75b9d7759...51fd357119b357c52e990ccce9059c423cc49406#e7bc29da08da2be1b3bd264c751322dc3e8c1905"><strong>testsuite/tests/deriving/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">@@ -115,3 +115,4 @@ test('T15290d', normal, compile, [''])</td>

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<pre style="margin: 0;"> <span id="LC115" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'T15398'</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 class="s" style="color: #d14;">''</span><span class="p">])</span></span>

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<pre style="margin: 0;"> <span id="LC116" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'T15637'</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 class="s" style="color: #d14;">''</span><span class="p">])</span></span>

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<pre style="margin: 0;"> <span id="LC117" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'T16179'</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 class="s" style="color: #d14;">''</span><span class="p">])</span></span>

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<pre style="margin: 0;">+<span id="LC118" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'T16518'</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 class="s" style="color: #d14;">''</span><span class="p">])</span></span></pre>

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<li id="79651925de0222571335b84d2e4099fdadbfdcf8">

<a href="https://gitlab.haskell.org/ghc/ghc/compare/75abaaead796415cf2b5da610f4b3ee75b9d7759...51fd357119b357c52e990ccce9059c423cc49406#79651925de0222571335b84d2e4099fdadbfdcf8"><strong>testsuite/tests/ghci/scripts/T16527.hs</strong></a>

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1

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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 GADTs #-}</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE RankNTypes #-}</span></span>

</pre>

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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;">T16527</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;">data</span> <span class="kt" style="color: #458; font-weight: 600;">T</span> <span class="kr" style="font-weight: 600;">where</span></span>

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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">MkT1</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">T</span></span>

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7

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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">MkT2</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">forall</span> <span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">.</span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">T</span></span></pre>

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<li id="a012dae3833ff67fdc3e7ff2f75c6e63a0412209">

<a href="https://gitlab.haskell.org/ghc/ghc/compare/75abaaead796415cf2b5da610f4b3ee75b9d7759...51fd357119b357c52e990ccce9059c423cc49406#a012dae3833ff67fdc3e7ff2f75c6e63a0412209"><strong>testsuite/tests/ghci/scripts/T16527.script</strong></a>

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1

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<pre style="margin: 0;">+<span id="LC1" class="line" lang="plaintext">:load T16527</span>

</pre>

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2

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">:info T</span></pre>

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</li>

<li id="a4a430318f4cbf85277397c1d602c7f29591d2d6">

<a href="https://gitlab.haskell.org/ghc/ghc/compare/75abaaead796415cf2b5da610f4b3ee75b9d7759...51fd357119b357c52e990ccce9059c423cc49406#a4a430318f4cbf85277397c1d602c7f29591d2d6"><strong>testsuite/tests/ghci/scripts/T16527.stdout</strong></a>

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1

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<pre style="margin: 0;">+<span id="LC1" class="line" lang="plaintext">data T where</span>

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2

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">  MkT1 :: (Int -> Int) -> T</span>

</pre>

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3

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext">  MkT2 :: (forall a. Maybe a) -> T</span>

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4

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<pre style="margin: 0;">+<span id="LC4" class="line" lang="plaintext">      -- Defined at T16527.hs:5:1</span></pre>

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<li id="080fb38cc741d3f1a476696b3373ab7cf48c2aaa">

<a href="https://gitlab.haskell.org/ghc/ghc/compare/75abaaead796415cf2b5da610f4b3ee75b9d7759...51fd357119b357c52e990ccce9059c423cc49406#080fb38cc741d3f1a476696b3373ab7cf48c2aaa"><strong>testsuite/tests/ghci/scripts/all.T</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="294" 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="294" 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">@@ -294,3 +294,4 @@ test('T11606', normal, ghci_script, ['T11606.script'])</td>

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294

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294

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<pre style="margin: 0;"> <span id="LC294" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'T16089'</span><span class="p">,</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">ghci_script</span><span class="p">,</span> <span class="p">[</span><span class="s" style="color: #d14;">'T16089.script'</span><span class="p">])</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="295" 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">

295

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295

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<pre style="margin: 0;"> <span id="LC295" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'T14828'</span><span class="p">,</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">ghci_script</span><span class="p">,</span> <span class="p">[</span><span class="s" style="color: #d14;">'T14828.script'</span><span class="p">])</span></span>

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296

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<pre style="margin: 0;"> <span id="LC296" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'T16376'</span><span class="p">,</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">ghci_script</span><span class="p">,</span> <span class="p">[</span><span class="s" style="color: #d14;">'T16376.script'</span><span class="p">])</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC297" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'T16527'</span><span class="p">,</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">ghci_script</span><span class="p">,</span> <span class="p">[</span><span class="s" style="color: #d14;">'T16527.script'</span><span class="p">])</span></span></pre>

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