Regex on new line breaks js/ts highlighter

[moritz-t-w]

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

• VS Code Version:

1.85.2
c8a36a69377856369f139f39ee56dd3838130fbf
x64

• OS Version: n/a

Putting a regular expression on a new line in JavaScript or TypeScript breaks the highlighter.
Steps to Reproduce:

1. paste this:

1
	/ f(/u/g)
function f(_: RegExp) {
	return 1;
}

2. make sure the language mode is set to TypeScript
   Expected:
   Same highlighting as this:
   

Actual:

Theme: @id:vscode.theme-defaults: Dark +

[moritz-t-w]

This happens with a bunch of characters, such as [({})]

[mirusky]

Maybe related to microsoft/vscode#204824

[RedCMD]

how is that not a typescript error?
having rogue slashes and/or brackets

[moritz-t-w]

@RedCMD
It's 1 divided by f(/u/g), the slashes in the function call being regex notation

[moritz-t-w]

Maybe related to microsoft/vscode#204824

@mirusky
From what I understand, the linked issue was a duplicate of microsoft/vscode#203998, which has been traced back to the go formatter used, not vscode,

[RedCMD]

It's 1 divided by f(/u/g)

my bad

looking at the TextMate code
looks like a simple fix
I'll make a PR soon

change ([dgimsuy]+|(?![\\/\\*])|(?=\\/\\*)) to (?!\\*)[dgimsuy]*((?!\\/)|(?=\\/\\*))

TypeScript-TmLanguage/TypeScript.tmLanguage

Line 8473 in b29f9f8

<string>(?&lt;!\+\+|--|})(?&lt;=[=(:,\[?+!]|^return|[^\._$[:alnum:]]return|^case|[^\._$[:alnum:]]case|=&gt;|&amp;&amp;|\|\||\*\/)\s*(\/)(?![\/*])(?=(?:[^\/\\\[\()]|\\.|\[([^\]\\]|\\.)+\]|\(([^\)\\]|\\.)+\))+\/([dgimsuy]+|(?![\/\*])|(?=\/\*))(?!\s*[a-zA-Z0-9_$]))</string>