tahonermann added a comment.
Apologies for the much delayed review (I know this already landed).
I added a comment, but I don't know if there is actually an issue to be fixed.
This looks good to me otherwise.
================
Comment at: clang/lib/Lex/Lexer.cpp:1490-1492
static const llvm::sys::UnicodeCharSet XIDStartChars(XIDStartRanges);
// '_' doesn't have the XID_Start property but is allowed in C++.
return C == '_' || XIDStartChars.contains(C);
----------------
Perhaps this should permit `$` when `LangOpts.DollarIdents` is true. However,
my attempts to produce a test case that illustrates such a need failed. I don't
know why; I guess `isAllowedInitiallyIDChar()` isn't called for all
identifiers? Or there is special handling of `LangOpts.DollarIdents` somewhere?
I wonder if that might imply an issue elsewhere; such as a missing call to
`isAllowedInitiallyIDChar()` somewhere?
I did verify that '$' (U+003F) is not in `XID_Start`:
https://util.unicode.org/UnicodeJsps/list-unicodeset.jsp?a=[:XID_Start=Yes:]
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D130416/new/
https://reviews.llvm.org/D130416
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