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Update configuration to build new working draft N4791.
Add new papers N4791 and N4792 (Editors' Report). Remove withdrawn papers N4788 and N4789. (Due to an administrative error, these N numbers were assigned multiple times.)
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papers/n4788.pdf renamed to papers/n4791.pdf

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p, h2, h3 { orphans: 3; widows: 3; }
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h2, h3 { page-break-after: avoid; }
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}
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</style><title>N4789</title></head><body>
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<h1>N4789 Editors' Report -- Programming Languages -- C++</h1>
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</style><title>N4792</title></head><body>
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<h1>N4792 Editors' Report -- Programming Languages -- C++</h1>
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<p>2018-11-26 <br />
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<p>2018-12-07 <br />
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Richard Smith (editor) (Google Inc) <br />
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Thomas Köppe (co-editor) (Google DeepMind) <br />
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Jens Maurer (co-editor) <br />
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<h2>New papers</h2>
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<ul>
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<li><a href="http://wg21.link/n4788">N4788</a> is the current working draft for C++20. It replaces <a href="http://wg21.link/n4778">N4778</a>.</li>
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<li>N4789 is this Editors' Report.</li>
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<li><a href="http://wg21.link/n4791">N4791</a> is the current working draft for C++20. It replaces <a href="http://wg21.link/n4778">N4778</a>.</li>
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<li>N4792 is this Editors' Report.</li>
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</ul>
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<p>Papers N4788 and N4789 (earlier versions of the post-San-Diego Working Draft
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and Editors' Report) are withdrawn and replaced by the above papers due to an
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administrative hiccup.</p>
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<h2>Motions incorporated into working draft</h2>
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<h3>Core working group motions</h3>
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The former heading has been removed, leaving the old content directly in
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[re.regex.nonmemb].</p>
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<p>[istream::sentry],
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[ostream::sentry],
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[ios::failure],
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[ios::fmtflatgs],
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[ios::iostate],
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[ios::openmode],
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[ios::seekdir], and
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[ios::Init]
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have been renamed, replacing the "::" with a "."
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and converting "Init" to lowercase.</p>
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<p>See the appendix "Cross-references from ISO C++ 2017" in the working draft
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for a full list of sectoin label changes since C++17.</p>
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<h2>Minor editorial fixes</h2>
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<p>A log of editorial fixes made to the working draft since N4778 is below.
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This list excludes changes
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that do not affect the body text or only affect whitespace or typeface. For a
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complete list including such changes (or for the actual deltas applied by these
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changes), consult the <a href="https://github.com/cplusplus/draft/compare/n4778...n4788">draft sources on github</a>.</p>
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changes), consult the <a href="https://github.com/cplusplus/draft/compare/n4778...n4791">draft sources on github</a>.</p>
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<pre><code>commit e00fef979f7c0da235351f898010658f1f074b87
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Author: Johel Ernesto Guerrero Peña &lt;johelegp@gmail.com&gt;
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Date: Thu Dec 6 21:48:24 2018 -0400
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[iterator.synopsis] Add reference to [alg.req.sortable]
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commit 9d81b4fde6dfe2b28737a79ed39f92ef9a0ee030
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Author: Eelis van der Weegen &lt;eelis@eelis.net&gt;
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Date: Sun Dec 2 06:07:03 2018 +0100
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[view.interface] Use "inherits"/"derives" consistently.
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commit 358fcdc442fd620f00673081223e4313cf0af499
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Author: Jens Maurer &lt;Jens.Maurer@gmx.net&gt;
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Date: Tue Nov 27 20:38:28 2018 +0100
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[cpp.subst] Introduce grammar non-terminal 'va-opt-replacement'
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to avoid repeated quotes of the token sequence.
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commit 4425a120b9a60d3c9e6aa3f1feb553082a9f1fbd
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Author: Jens Maurer &lt;Jens.Maurer@gmx.net&gt;
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Date: Fri Dec 7 21:37:02 2018 +0100
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[iterator.concepts.readable] Turn parenthesized explanation into a note.
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commit de1093907b6deb7455b866d5c47a6a1a026a90a1
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Author: Jens Maurer &lt;Jens.Maurer@gmx.net&gt;
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Date: Fri Dec 7 22:27:20 2018 +0100
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[temp.func.order] Adjust example to rules in [temp.deduct.partial].
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commit 07901a9f724b019c0b6634a9a0c39e5dd5208324
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Author: Jens Maurer &lt;Jens.Maurer@gmx.net&gt;
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Date: Sat Dec 1 17:31:53 2018 +0100
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[input.output] Avoid colons in stable labels
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commit 6e5dba392d19241efed299c91670cc31fcbe3826
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Author: Thomas Köppe &lt;tkoeppe@google.com&gt;
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Date: Fri Dec 7 22:05:50 2018 +0000
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[template.mask.array.overview] Fix nesting of parentheses; reflow source
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commit 36998eae97c6876c1f67dc0425c42555dbf0cea5
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Author: Thomas Köppe &lt;tkoeppe@google.com&gt;
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Date: Fri Dec 7 22:02:49 2018 +0000
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[iterator.concept.iterator] Remove stray, mismatched parenthesis
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commit a5603f0cf1b35097a9892d9627eb03dc5cc3e154
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Author: JF Bastien &lt;github@jfbastien.com&gt;
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Date: Fri Dec 7 13:48:16 2018 -0800
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[basic.fundamental] Remove a footnote that was describing a particular possible manifestation of undefined behaviour
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The note was problematic, as (by omission) it suggested that such behaviour might not be true for other types.
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commit 8035cdb6de85ff0f541b3fc78f747d060ea50ef6
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Author: Johel Ernesto Guerrero Peña &lt;johelegp@gmail.com&gt;
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Date: Fri Dec 7 17:43:10 2018 -0400
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[iterator.traits] Present concept requirements consistently (#2566)
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commit a4366dc5bf59d826a9b1aee82d317636a6239e9a
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Author: Jens Maurer &lt;Jens.Maurer@gmx.net&gt;
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Date: Fri Dec 7 21:51:55 2018 +0100
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[iosfwd.syn] Change char_traits from 'class' to 'struct'. (#2570)
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commit 888da0bf8d0a07048dab8098197c7a326eda9e19
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Author: Thomas Köppe &lt;tkoeppe@google.com&gt;
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Date: Wed Dec 5 01:46:53 2018 +0000
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[algorithms] Add missing closing delimiters
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commit 14db6ec65b7c3dbd9da2e112e09015bdcba3501f
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Author: Eelis &lt;github.com@contacts.eelis.net&gt;
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Date: Tue Dec 4 23:01:27 2018 +0100
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[atomics.types.operations]/20 Replace "E.g." at start of sentence with "For example,". (#2558)
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commit aadf7684f1e6c2fe1fa15ffa0cf2ee45b5e56cd7
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Author: Eelis &lt;github.com@contacts.eelis.net&gt;
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Date: Mon Dec 3 22:54:57 2018 +0100
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[re.grammar] Add missing closing parentheses. (#2552)
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commit 4fc0a426f700c03aeea5b5efe040af9f3c977df8
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Author: Jens Maurer &lt;Jens.Maurer@gmx.net&gt;
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Date: Sat Dec 1 14:32:10 2018 +0100
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[utilities] Harmonize 'For T in Types' phrasing. (#2543)
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No '...' for a pack expansion should appear after 'Types', and no index on 'T'.
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commit 334e9f546dcb786801b9bef428f7c0fb94bee79b
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Author: Jens Maurer &lt;Jens.Maurer@gmx.net&gt;
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Date: Sat Dec 1 03:34:10 2018 +0100
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[dcl.init] Clarify standard conversions for built-in types (#2534)
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commit e6cd48f407698d882a08f2bc5e3aad8ea13b495e
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Author: Jens Maurer &lt;Jens.Maurer@gmx.net&gt;
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Date: Sat Dec 1 03:32:38 2018 +0100
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[over.best.ics] Clarify ambiguous conversion sequence (#2532)
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commit 89f5b1dfbabf0b5755f4e516a3be9b1e2b78ffc2
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Author: Jens Maurer &lt;Jens.Maurer@gmx.net&gt;
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Date: Tue Nov 27 22:01:21 2018 +0100
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[over.ics.ref] Use 'implicit conversion sequence',
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not 'standard conversion sequence' where applicable.
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commit af1191e9f5a0ab93214849fbfed77f75b2da673b
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Author: Jens Maurer &lt;Jens.Maurer@gmx.net&gt;
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Date: Tue Nov 27 22:48:48 2018 +0100
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[class.bit] Bit-fields of sufficient width can store any value of an enumeration,
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not just values of enumerators.
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commit 5ef7f9cbb248402f6c74f01acba87292efb0b561
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Author: Jens Maurer &lt;Jens.Maurer@gmx.net&gt;
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Date: Tue Nov 27 22:19:14 2018 +0100
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[dcl.init.aggr] Resolve grammar confusion around arrays of unknown bound
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commit 197db8c1fd3e57bc5c622a5e0ea9ac3f0c974e85
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Author: Jens Maurer &lt;Jens.Maurer@gmx.net&gt;
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Date: Wed Nov 28 08:04:34 2018 +0100
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[dcl.inline,dcl.align] Strike redundant 'definition'
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in phrases reading 'declaration or definition',
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because a definition is also a declaration.
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commit ad6385ac9730786006205d6fdca92e1d45aea13a
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Author: Jens Maurer &lt;Jens.Maurer@gmx.net&gt;
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Date: Tue Nov 27 23:16:26 2018 +0100
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[dcl.spec] Harmonize phrasing of restrictions on decl-specifiers
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commit f38c14be051d91bc6492d774d45a325154b7f307
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Author: Eelis &lt;github.com@contacts.eelis.net&gt;
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Date: Tue Nov 27 23:28:09 2018 +0100
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[depr.locale.category] Don't parenthesize reference after 'in'. (#2526)
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commit 3ba8b56c0ffa84cf8fe7bf78234fb8694d4d1498
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Author: Richard Smith &lt;richard@metafoo.co.uk&gt;
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Date: Tue Nov 27 12:10:20 2018 -0800
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[atomics.types.generic] Remove note that tries to encourage
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implementations to use the same size for atomic&lt;T&gt; as for T.
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It's not appropriate for a note to contain "should" or implementation
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encouragement of this kind. It's also bad advice.
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commit e23cbb5b79397dd07c4c7adbea35b90075c78268
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Author: Sergey Zubkov &lt;cubbi@cubbi.com&gt;
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Date: Tue Nov 27 03:11:37 2018 -0500
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[allocator.uses.construction] the argument name is alloc, not allocator
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commit 41a8baa9f739154f2b8c3f6b9e8339ede031195b
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Author: Richard Smith &lt;richard@metafoo.co.uk&gt;
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Date: Mon Nov 26 19:21:14 2018 -0800
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[unord.req] Undo change accidentally made in wrong table cell.
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The intended table cell was already correctly updated.
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<pre><code>commit 9a720cd36a749057061b245772fb243678876b13
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commit 9a720cd36a749057061b245772fb243678876b13
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Author: Jens Maurer &lt;Jens.Maurer@gmx.net&gt;
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Date: Thu Oct 11 20:53:10 2018 +0200
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