SyntaxError: Invalid regular expression: invalid group specifier name

slevithan / regex

Regex template tag for readable, high-performance, native JS regexes, with context-aware interpolation and always-on best practices

MIT License

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SyntaxError: Invalid regular expression: invalid group specifier name #26

Open unclekitty opened 19 hours ago

unclekitty commented 19 hours ago

SyntaxError in src/subroutines.js

const subroutinePattern = String.raw`\\g<(?<subroutineName>[^>&]+)>`;
const token = new RegExp(String.raw`
${subroutinePattern}
| (?<capturingStart>${capturingDelim})
| \\(?<backrefNum>[1-9]\d*)
| \\k<(?<backrefName>[^>]+)>
| \\?.
`.replace(/\s+/g, ''), 'gsu');

Safari browser Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko

slevithan commented 18 hours ago

Thanks for the report!

Can you provide more details? I'm not easily able to test Safari.

What is the full SyntaxError?
Which version of Safari does that user agent string correspond to?
Anything else you can think of that might be helpful for reproducing/debugging? E.g. does it reproduce for you on other browsers or computers?

It's not at all obvious why that code would trigger a syntax error, and obviously it is passing the tests in recent versions of Node.js, etc.