aaron.ballman added inline comments.
================
Comment at: clang-tidy/misc/ArgumentCommentCheck.cpp:124
@@ +123,3 @@
+ InDecl = InDecl.trim('_');
+ return InComment.compare_lower(InDecl) == 0;
+}
----------------
Correct, which means this won't behave properly in some locales with UTF-8
identifiers. Consider Turkish, where İ (U+0130 “Latin Capital Letter I With Dot
Above”) is the uppercase form of ı (U+0131 “Latin Small Letter Dotless I”). If
the comment contains one version while the identifier contains the other, the
comparison will currently fail, while a locale-aware comparison would succeed.
You run into similar things with SS vs ß in German as well, where the uppercase
form is two characters while the lowercase is only a single character.
https://reviews.llvm.org/D23135
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