Missing ranges in NameStartChar

[kddnewton]

Looks like in the lexer is missing a couple of entries in its regex for NameStartChar.

I'm seeing

xml-tools/packages/parser/lib/lexer.js

Line 37 in d36ef38

"(:|[a-zA-Z]|_|\\u2070-\\u218F|\\u2C00-\\u2FEF|\\u3001-\\uD7FF|\\uF900-\\uFDCF|\\uFDF0-\\uFFFD)"

, which includes:

":" | [A-Z] | "_" | [a-z] | [#x2070-#x218F] | [#x2C00-#x2FEF] | [#x3001-#xD7FF] | [#xF900-#xFDCF] | [#xFDF0-#xFFFD]

But the spec has:

":" | [A-Z] | "_" | [a-z] | [#xC0-#xD6] | [#xD8-#xF6] | [#xF8-#x2FF] | [#x370-#x37D] | [#x37F-#x1FFF] | [#x200C-#x200D] | [#x2070-#x218F] | [#x2C00-#x2FEF] | [#x3001-#xD7FF] | [#xF900-#xFDCF] | [#xFDF0-#xFFFD] | [#x10000-#xEFFFF]

So it's missing some entries in the 1-byte form and then anything #x10000 and above.

[kddnewton]

cc @bd82 this came from an issue on prettier here: prettier/plugin-xml#607.

[bd82]

Hello @kddnewton

This could be a bit tricky, specifically: [#x10000-#xEFFFF] range will need to be converted to the matching surrogate pair range in JavaScript
-https://mathiasbynens.be/notes/javascript-unicode

[kddnewton]

@bd82 yeah totally get it. I think that's fine to skip those for now, the issue I'm facing is within

[#xC0-#xD6] | [#xD8-#xF6] | [#xF8-#x2FF] | [#x370-#x37D] | [#x37F-#x1FFF] | [#x200C-#x200D]