expand set of characters allowed in a capture group name

[aohan237]

here is the simple example from doc.rs, just modify the group name to chinese

https://play.rust-lang.org/?version=stable&mode=debug&edition=2018&gist=3775118597eecd8c8e4a98475917b9d1

throw this error:

error: invalid capture group character

[BurntSushi]

As the docs say, only [_0-9a-zA-Z] characters are allowed as capture group names:

(?P<name>exp)  named (also numbered) capture group (allowed chars: [_0-9a-zA-Z])

However, this is something that can, and probably should be expanded. But this isn't a bug and the error you're getting is correct.

[aohan237]

sorry for that.

thanks ,if you can impl this

[BurntSushi]

Why did you close this? I marked it as an enhancement and updated the title to reflect as such.

[BurntSushi]

Before implementation, this requires a careful specification.

[aohan237]

ok,thanks

[aohan237]

is there any updates on this?

[BurntSushi]

If there were, they would be recorded here.

[aohan237]

cjk support mark , in case someone needs it