Re: regex support

[Daniel Wright <daniel.d.wright@gmail.com>]

Ryan Bowman <ryanlbowman@yahoo.com> writes:

> Does emacs support the regex syntax {4} or any of it's
> variants?  I'd like to match a date a la 2005-04-19,
> so I'm trying (for the year part) something like
> "[0-9]{4}", but unless I'm doing something wrong it
> doesn't seem to be working.  Assuming it doesn't
> support that, is there a better way to match an string
> of digits of length 4 than "[0-9][0-9][0-9][0-9]"?

You need a couple of extra backslashes, try "[0-9]\{4\}".

There's a full description in the "regexps" node of the emacs info:

(info "(emacs)regexps");<--- hit C-x C-e here.

Greetings,
Daniel.