[PATCH] D25450: [clang-tidy] Fix identifier naming in macro args.

[Jason Henline via cfe-commits]

jhen created this revision.
jhen added a reviewer: alexfh.
jhen added a subscriber: cfe-commits.
Herald added a subscriber: jlebar.

clang-tidy should fix identifier naming even when the identifier is
referenced inside a macro expansion, provided that the identifier enters
the macro expansion completely within a macro argument.

For example, this will allow fixes to the naming of the identifier
'global' when it is declared and used as follows:

  int global;
  #define USE_IN_MACRO(m) auto use_##m = m
  USE_IN_MACRO(global);


https://reviews.llvm.org/D25450

Files:
  clang-tidy/readability/IdentifierNamingCheck.cpp
  test/clang-tidy/readability-identifier-naming.cpp

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