Unicode properties and Firefox JavaScript

Asked Aug 31 '18 at 15:09

Active Aug 31 '18 at 15:12

Viewed 257 times

Here is how it works in Chromium:

> letter = "\\p{L}"
< "\p{L}"
> reg = RegExp( letter, "gu" )
< /\p{L}/gu
> reg.test("é")
< true
> reg.test("&")
< false

In Firefox I get an error:

>  letter = "\\p{L}"
< "\\p{L}"
> reg = RegExp( letter, "gu" )
> SyntaxError: invalid identity escape in regular expression

So is there a way to make it work in Firefox?

asked Aug 31 '18 at 15:09

Eugene Barsky

I don't think Firefox supports those yet. – Pointy Aug 31 '18 at 15:14
@Pointy It's a pity. :( Is there anything known about when it will be supported? – Eugene Barsky Aug 31 '18 at 15:17
2

Use http://xregexp.com/ – Wiktor Stribiżew Aug 31 '18 at 15:40
@WiktorStribiżew Unfortunately, Firefox haven't implemented lookbehind yet, so even with `xregexp` it's impossible to imitate unicode `\b`. – Eugene Barsky Sep 05 '18 at 22:01
1

@EugeneBarsky That is a different question already, but there are answers on SO. You may either use whitespace boundaries as described [here](https://stackoverflow.com/questions/2881445), or use XRegExp to build [custom Unicode-aware word boundaries](https://stackoverflow.com/a/37471102/3832970). – Wiktor Stribiżew Sep 06 '18 at 07:50

0 Answers0