CSS multiline string incorrect syntax highlighting

[arthniwa]

Does this issue occur when all extensions are disabled?: Yes

• VS Code Version: 1.89.0
• OS Version: Windows 11

Steps to Reproduce:

1. Create a css file. Write, for example

@import url('a-really-long\
    -url');

2. The syntax highlighting is wrong. It seems to not interpret the string as a whole.

This was mentioned in issue microsoft/vscode#125739, which was closed and locked with a reference to another repo, but that repo was archived. Is there a plan to fix this bug?

[RedCMD]

should move report to https://github.com/microsoft/vscode-css

caused by \\s*. it matches the ending newline.
resulting in the begin anchor \\G being placed at the beginning of the next line (VSCode TextMate bug?)
causing ^(?<!\\G) to always fail

I don't know why \\s* was placed there
as it does nothing other than cause issues