Textmate lexer file is invalid

[Chris2011]

• VSCode Version: -
• OS Version: Windows [Version 10.0.18363.592]
• REST Client Version: -

Steps to Reproduce:

1. Go to this site: https://www.liquid-technologies.com/online-xml-validator
2. Paste the code from your textmate file https://github.com/Huachao/vscode-restclient/blob/master/syntaxes/http.tmLanguage and hit validate.
3. Problem is this line: <string>^\s*(?=\<\S)</string>

I don't know how VS Code handles it, but the file is not valid. Apache NetBeans 11.3 (Beta 2) can handle Textmate too but It get's a parse error, because of this line. I think escaping it to &lt; will fix the problem, but didn't test it yet.

[Huachao]

@Chris2011 nice catch, I guess VSCode internally transforms textmate files to its JSON format.