Re: Re: Re: [PATCH v3] libcpp: add function to check XID properties

Nevermind, it looks like '_' isn't actually XID_Start. https://www.unicode.org/Public/UCD/latest/ucd/PropList.txt https://doc.rust-lang.org/reference/identifiers.html

Re: Re: [PATCH v3] libcpp: add function to check XID properties

Is '_' not CPP_XID_START?