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<h3>
Ben Gamari pushed to branch wip/docs-fixes
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/a14b864452f6e9e51d6e1dcecd5c8d6461295f4e">a14b8644</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-09-17T10:54:53-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">docs: Fix various documentation issues
</pre>
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<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/1222d3fe435b63988dc5d13c7deb3b211de1225c">1222d3fe</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-09-17T10:55:00-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">hadrian: Fail on Sphinx syntax errors
Specifically the "Inline literal start-string without end-string"
warning, which typically means that the user neglected to separate
an inline code block from suffix text with a backslash.
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<h4>6 changed files:</h4>
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<a href="#85c07986c623f3180b40021d7109edd1e6a71a93">
docs/users_guide/9.0.1-notes.rst
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<li class="file-stats">
<a href="#afd1105d8e32dc50acf9fc381b4433a3bcd009cf">
docs/users_guide/exts/explicit_forall.rst
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<li class="file-stats">
<a href="#ed75822e0b6142f196a6abeb623c7669d31b4711">
docs/users_guide/exts/instances.rst
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<li class="file-stats">
<a href="#96a304b83d0bf4600831c1a4fbfe7fd74edeee69">
docs/users_guide/release-notes.rst
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<li class="file-stats">
<a href="#6ae923e173536bf0ddb39552416a7e21767287db">
docs/users_guide/runtime_control.rst
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<li class="file-stats">
<a href="#6c93025dd021b74dda705f36d078e02bcda0ccfe">
hadrian/src/Rules/Documentation.hs
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<h4>Changes:</h4>
<li id="85c07986c623f3180b40021d7109edd1e6a71a93">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/195ad0f8e4b84d38bffd1fab2d2b8e925d48c255...1222d3fe435b63988dc5d13c7deb3b211de1225c#85c07986c623f3180b40021d7109edd1e6a71a93"><strong>docs/users_guide/9.0.1-notes.rst</strong></a>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="49" 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">@@ -49,9 +49,10 @@ Highlights</td>
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<pre style="margin: 0;"> <span id="LC49" class="line" lang="plaintext"></span>
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<td class="diff-line-num new_line" data-linenumber="50" 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="LC50" class="line" lang="plaintext"> - GHC now relies on a new "ghc-bignum" package to provide Integer/Natural</span>
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<pre style="margin: 0;"> <span id="LC51" class="line" lang="plaintext"> implementations. This package supports the following backends:</span>
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<pre style="margin: 0;">-<span id="LC52" class="line" lang="plaintext"> - gmp: adapted from integer-gmp package that was used before</span>
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<pre style="margin: 0;">-<span id="LC53" class="line" lang="plaintext"> - native: new Haskell implementation, faster than integer-simple which is</span>
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<td class="diff-line-num old old_line" data-linenumber="54" 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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<td class="diff-line-num new_line old" data-linenumber="52" 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="LC54" class="line" lang="plaintext"> not used anymore</span>
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<pre style="margin: 0;">+<span id="LC52" class="line" lang="plaintext"></span>
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<pre style="margin: 0;">+<span id="LC53" class="line" lang="plaintext"> - gmp: adapted from integer-gmp package that was used before</span>
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<pre style="margin: 0;">+<span id="LC54" class="line" lang="plaintext"> - native: new Haskell implementation, faster than integer-simple which is</span>
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<pre style="margin: 0;">+<span id="LC55" class="line" lang="plaintext"> not used anymore</span>
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<pre style="margin: 0;"> <span id="LC56" class="line" lang="plaintext"></span>
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<pre style="margin: 0;"> <span id="LC57" class="line" lang="plaintext"> - All backends now use the same representation for big numbers (the one that</span>
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<pre style="margin: 0;"> <span id="LC58" class="line" lang="plaintext"> was previously used only by integer-gmp). It led to several compiler</span>
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<li id="afd1105d8e32dc50acf9fc381b4433a3bcd009cf">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/195ad0f8e4b84d38bffd1fab2d2b8e925d48c255...1222d3fe435b63988dc5d13c7deb3b211de1225c#afd1105d8e32dc50acf9fc381b4433a3bcd009cf"><strong>docs/users_guide/exts/explicit_forall.rst</strong></a>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="37" 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">@@ -37,9 +37,9 @@ Notes:</td>
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<pre style="margin: 0;"> <span id="LC37" class="line" lang="plaintext"></span>
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<pre style="margin: 0;"> <span id="LC38" class="line" lang="plaintext"> instance forall a. Eq a => Eq [a] where ...</span>
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<pre style="margin: 0;"> <span id="LC39" class="line" lang="plaintext"></span>
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<pre style="margin: 0;">-<span id="LC40" class="line" lang="plaintext"> Note that the use of ``forall``s in instance declarations is somewhat</span>
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<pre style="margin: 0;">+<span id="LC40" class="line" lang="plaintext"> Note that the use of ``forall``<span class="idiff left right">\</span>s in instance declarations is somewhat</span>
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<pre style="margin: 0;"> <span id="LC41" class="line" lang="plaintext"> restricted in comparison to other types. For example, instance declarations</span>
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<pre style="margin: 0;">-<span id="LC42" class="line" lang="plaintext"> are not allowed to contain nested ``forall``s. See</span>
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<pre style="margin: 0;">+<span id="LC42" class="line" lang="plaintext"> are not allowed to contain nested ``forall``<span class="idiff left right">\</span>s. See</span>
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<pre style="margin: 0;"> <span id="LC43" class="line" lang="plaintext"> :ref:`formal-instance-syntax` for more information.</span>
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<pre style="margin: 0;"> <span id="LC44" class="line" lang="plaintext"></span>
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<pre style="margin: 0;"> <span id="LC45" class="line" lang="plaintext">- If the :ghc-flag:`-Wunused-foralls` flag is enabled, a warning will be emitted</span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/195ad0f8e4b84d38bffd1fab2d2b8e925d48c255...1222d3fe435b63988dc5d13c7deb3b211de1225c#ed75822e0b6142f196a6abeb623c7669d31b4711"><strong>docs/users_guide/exts/instances.rst</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -141,22 +141,22 @@ Where:</td>
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<pre style="margin: 0;"> <span id="LC141" class="line" lang="plaintext"></span>
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<pre style="margin: 0;"> <span id="LC142" class="line" lang="plaintext">- ``btype`` is a type that is not allowed to have an outermost</span>
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<pre style="margin: 0;"> <span id="LC143" class="line" lang="plaintext"> ``forall``/``=>`` unless it is surrounded by parentheses. For example,</span>
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<pre style="margin: 0;">-<span id="LC144" class="line" lang="plaintext"> ``forall a. a`` and ``Eq a => a`` are not legal ``btype``s, but</span>
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<pre style="margin: 0;">+<span id="LC144" class="line" lang="plaintext"> ``forall a. a`` and ``Eq a => a`` are not legal ``btype``<span class="idiff left right">\</span>s, but</span>
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<pre style="margin: 0;"> <span id="LC145" class="line" lang="plaintext"> ``(forall a. a)`` and ``(Eq a => a)`` are legal.</span>
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<pre style="margin: 0;"> <span id="LC146" class="line" lang="plaintext">- ``ctype`` is a ``btype`` that has no restrictions on an outermost</span>
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<pre style="margin: 0;">-<span id="LC147" class="line" lang="plaintext"> ``forall``/``=>``, so ``forall a. a`` and ``Eq a => a`` are legal ``ctype``s.</span>
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<pre style="margin: 0;">-<span id="LC148" class="line" lang="plaintext">- ``arg_type`` is a type that is not allowed to have ``forall``s or ``=>``s</span>
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<pre style="margin: 0;">+<span id="LC147" class="line" lang="plaintext"> ``forall``/``=>``, so ``forall a. a`` and ``Eq a => a`` are legal ``ctype``<span class="idiff left right">\</span>s.</span>
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<pre style="margin: 0;">+<span id="LC148" class="line" lang="plaintext">- ``arg_type`` is a type that is not allowed to have ``forall``s or ``=>``<span class="idiff left right">\</span>s</span>
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<pre style="margin: 0;"> <span id="LC149" class="line" lang="plaintext">- ``prefix_cls_tycon`` is a class type constructor written prefix (e.g.,</span>
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<pre style="margin: 0;"> <span id="LC150" class="line" lang="plaintext"> ``Show`` or ``(&&&)``), while ``infix_cls_tycon`` is a class type constructor</span>
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<pre style="margin: 0;">-<span id="LC151" class="line" lang="plaintext"> written infix (e.g., ``<span class="idiff left right">`Show</span>``` or ``&&&``).</span>
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<pre style="margin: 0;">+<span id="LC151" class="line" lang="plaintext"> written infix (e.g., ``<span class="idiff left right">\`Show\</span>``` or ``&&&``).</span>
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<pre style="margin: 0;"> <span id="LC152" class="line" lang="plaintext"></span>
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<pre style="margin: 0;"> <span id="LC153" class="line" lang="plaintext">This is a simplified grammar that does not fully delve into all of the</span>
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<pre style="margin: 0;"> <span id="LC154" class="line" lang="plaintext">implementation details of GHC's parser (such as the placement of Haddock</span>
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<pre style="margin: 0;"> <span id="LC155" class="line" lang="plaintext">comments), but it is sufficient to attain an understanding of what is</span>
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<pre style="margin: 0;"> <span id="LC156" class="line" lang="plaintext">syntactically allowed. Some further various observations about this grammar:</span>
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<pre style="margin: 0;"> <span id="LC157" class="line" lang="plaintext"></span>
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<pre style="margin: 0;">-<span id="LC158" class="line" lang="plaintext">- Instance declarations are not allowed to be declared with nested ``forall``s</span>
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<pre style="margin: 0;">-<span id="LC159" class="line" lang="plaintext"> or ``=>``s. For example, this would be rejected: ::</span>
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<pre style="margin: 0;">+<span id="LC158" class="line" lang="plaintext">- Instance declarations are not allowed to be declared with nested ``forall``<span class="idiff left right">\</span>s</span>
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<pre style="margin: 0;">+<span id="LC159" class="line" lang="plaintext"> or ``=>``<span class="idiff left right">\</span>s. For example, this would be rejected: ::</span>
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<pre style="margin: 0;"> <span id="LC160" class="line" lang="plaintext"></span>
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<pre style="margin: 0;"> <span id="LC161" class="line" lang="plaintext"> instance forall a. forall b. C (Either a b) where ...</span>
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<pre style="margin: 0;"> <span id="LC162" class="line" lang="plaintext"></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -5,3 +5,4 @@ Release notes</td>
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<pre style="margin: 0;"> <span id="LC5" class="line" lang="plaintext"> :maxdepth: 1</span>
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<pre style="margin: 0;"> <span id="LC6" class="line" lang="plaintext"></span>
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<pre style="margin: 0;"> <span id="LC7" class="line" lang="plaintext"> 9.0.1-notes</span>
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<pre style="margin: 0;">+<span id="LC8" class="line" lang="plaintext"> 9.2.1-notes</span></pre>
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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">@@ -183,6 +183,13 @@ Event log output</td>
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<pre style="margin: 0;"> <span id="LC183" class="line" lang="plaintext">Furthermore GHC lets you specify the way event log data (see :rts-flag:`-l</span>
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<pre style="margin: 0;"> <span id="LC184" class="line" lang="plaintext">⟨flags⟩`) is written through a custom :c:type:`EventLogWriter`:</span>
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<pre style="margin: 0;"> <span id="LC185" class="line" lang="plaintext"></span>
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<pre style="margin: 0;">+<span id="LC186" class="line" lang="plaintext">.. The size_t declaration below is simply to ensure that the build doesn't fail with an</span>
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<pre style="margin: 0;">+<span id="LC187" class="line" lang="plaintext"> undefined reference target warning as Sphinx doesn't know about size_t.</span>
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<pre style="margin: 0;">+<span id="LC189" class="line" lang="plaintext">.. c:type:: size_t</span>
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<pre style="margin: 0;">+<span id="LC191" class="line" lang="plaintext"> :hidden:</span>
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<pre style="margin: 0;"> <span id="LC193" class="line" lang="plaintext">.. c:type:: EventLogWriter</span>
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<pre style="margin: 0;"> <span id="LC194" class="line" lang="plaintext"></span>
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<pre style="margin: 0;"> <span id="LC195" class="line" lang="plaintext"> A sink of event-log data.</span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/195ad0f8e4b84d38bffd1fab2d2b8e925d48c255...1222d3fe435b63988dc5d13c7deb3b211de1225c#6c93025dd021b74dda705f36d078e02bcda0ccfe"><strong>hadrian/src/Rules/Documentation.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -127,6 +127,21 @@ checkSphinxWarnings :: FilePath -- ^ output directory</td>
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<pre style="margin: 0;"> <span id="LC127" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Action</span> <span class="nb" style="color: #0086b3;">()</span></span>
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128
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128
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<pre style="margin: 0;"> <span id="LC128" class="line" lang="haskell"><span class="n" style="color: #333;">checkSphinxWarnings</span> <span class="n" style="color: #333;">out</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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129
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129
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<pre style="margin: 0;"> <span id="LC129" class="line" lang="haskell"> <span class="n" style="color: #333;">log</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">liftIO</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">readFile</span> <span class="p">(</span><span class="n" style="color: #333;">out</span> <span class="o" style="font-weight: 600;">-/-</span> <span class="s" style="color: #d14;">".log"</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC130" class="line" lang="haskell"> <span class="n" style="color: #333;">when</span> <span class="p">(</span><span class="s" style="color: #d14;">"Inline literal start-string without end-string."</span> <span class="p">`</span><span class="n" style="color: #333;">isInfixOf</span><span class="p">`</span> <span class="n" style="color: #333;">log</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC131" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">fail</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">unlines</span></span>
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<pre style="margin: 0;">+<span id="LC132" class="line" lang="haskell"> <span class="p">[</span> <span class="s" style="color: #d14;">"Syntax error found in Sphinx log. "</span></span>
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<pre style="margin: 0;">+<span id="LC133" class="line" lang="haskell"> <span class="p">,</span> <span class="s" style="color: #d14;">""</span></span>
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<pre style="margin: 0;">+<span id="LC134" class="line" lang="haskell"> <span class="p">,</span> <span class="s" style="color: #d14;">"This likely means that you have forgotten a </span><span class="se" style="color: #d14;">\\</span><span class="s" style="color: #d14;"> after inline code block. For instance,"</span></span>
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<pre style="margin: 0;">+<span id="LC135" class="line" lang="haskell"> <span class="p">,</span> <span class="s" style="color: #d14;">"you might have written:"</span></span>
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136
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<pre style="margin: 0;">+<span id="LC136" class="line" lang="haskell"> <span class="p">,</span> <span class="s" style="color: #d14;">""</span></span>
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137
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<pre style="margin: 0;">+<span id="LC137" class="line" lang="haskell"> <span class="p">,</span> <span class="s" style="color: #d14;">" are not allowed to contain nested ``forall``s."</span></span>
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138
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<pre style="margin: 0;">+<span id="LC138" class="line" lang="haskell"> <span class="p">,</span> <span class="s" style="color: #d14;">""</span></span>
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<pre style="margin: 0;">+<span id="LC139" class="line" lang="haskell"> <span class="p">,</span> <span class="s" style="color: #d14;">"Whereas you need to write:"</span></span>
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<pre style="margin: 0;">+<span id="LC140" class="line" lang="haskell"> <span class="p">,</span> <span class="s" style="color: #d14;">""</span></span>
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<pre style="margin: 0;">+<span id="LC141" class="line" lang="haskell"> <span class="p">,</span> <span class="s" style="color: #d14;">" are not allowed to contain nested ``forall``</span><span class="se" style="color: #d14;">\</span><span class="err" style="color: #a61717; background-color: #e3d2d2;">s.</span><span class="se" style="color: #d14;">"</span></span>
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<pre style="margin: 0;">+<span id="LC142" class="line" lang="haskell"><span class="s" style="color: #d14;"> , ""</span></span>
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<pre style="margin: 0;">+<span id="LC143" class="line" lang="haskell"><span class="s" style="color: #d14;"> ]</span></span>
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<pre style="margin: 0;">+<span id="LC144" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC145" class="line" lang="haskell"><span class="s" style="color: #d14;"> when ("</span><span class="n" style="color: #333;">reference</span> <span class="n" style="color: #333;">target</span> <span class="n" style="color: #333;">not</span> <span class="n" style="color: #333;">found</span><span class="s" style="color: #d14;">" `isInfixOf` log)</span></span>
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<pre style="margin: 0;"> <span id="LC146" class="line" lang="haskell"><span class="s" style="color: #d14;"> $ fail "</span><span class="kt" style="color: #458; font-weight: 600;">Undefined</span> <span class="n" style="color: #333;">reference</span> <span class="n" style="color: #333;">targets</span> <span class="n" style="color: #333;">found</span> <span class="kr" style="font-weight: 600;">in</span> <span class="kt" style="color: #458; font-weight: 600;">Sphinx</span> <span class="n" style="color: #333;">log</span><span class="o" style="font-weight: 600;">.</span><span class="s" style="color: #d14;">"</span></span>
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147
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<pre style="margin: 0;"> <span id="LC147" class="line" lang="haskell"></span>
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