[PATCH] D129664: [Clang] Adjust extension warnings for delimited sequences

[Corentin Jabot via Phabricator via cfe-commits]

cor3ntin created this revision.
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WG21 approved delimited escape sequences and named escape
sequences.
Adjust the extension warnings accordingly, and update
the release notes.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D129664

Files:
  clang/docs/ReleaseNotes.rst
  clang/include/clang/Basic/DiagnosticLexKinds.td
  clang/lib/Lex/Lexer.cpp
  clang/lib/Lex/LiteralSupport.cpp
  clang/test/Lexer/char-escapes-delimited.c
  clang/test/Preprocessor/ucn-pp-identifier.c
  clang/test/Sema/ucn-identifiers.c

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