[libcxx-commits] [libcxx] [libcxx] Provide locale conversions to tests through lit substitution (PR #105651)

[Louis Dionne via libcxx-commits]

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@@ -80,6 +49,12 @@ std::wstring negate_en_US(std::wstring s) {
 #endif
 }
 
+wchar_t thousands_sep_or_default(std::wstring s) { return !s.empty() ? s[0] : L','; }
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ldionne wrote:

> You mean, that rather than the individual tests doing `const wchar_t fr_sep = LocaleHelpers::mon_thousands_sep_or_default(FR_MON_THOU_SEP);`, we'd just go `const wchar_t fr_sep = FR_MON_THOU_SEP;`?

Yes, exactly!

https://github.com/llvm/llvm-project/pull/105651