[PATCH] D20959: [clang-format] make header guard identification stricter (with Lexer).

[Eric Liu via cfe-commits]

ioeric updated this revision to Diff 59698.
ioeric marked 2 inline comments as done.
ioeric added a comment.

- Addressed reviewer's comments. Added a test case for empty code.


http://reviews.llvm.org/D20959

Files:
  lib/Format/Format.cpp
  unittests/Format/CleanupTest.cpp

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