Re: [Chicken-users] Re: regex and named subpatterns

[Robin Lee Powell]

On Wed, Mar 05, 2008 at 09:55:21PM -0500, Hans Nowak wrote:
> The way I understand it, Chicken's regex module is based on PCRE,
> and the PCRE manual mentions the (?P<name>...) syntax:
>
>        In PCRE, a subpattern can be named in one of three  ways:  (?<name>...)
>        or  (?'name'...)  as in Perl, or (?P<name>...) as in Python. References
>        to capturing parentheses from other parts of the pattern, such as back-
>        references,  recursion,  and conditions, can be made by name as well as
>        by number.
>
> (At least according to http://www.pcre.org/pcre.txt.)

Huh.  I've been a regex nerd for years and I'd never heard of that.
Certainly Perl itself, at least according to the man page I have,
doesn't support it.

> It's a bit odd though that Chicken (maybe unintentionally)
> supports the  construct in regular expressions, but provides no
> ways to make use of it.

You mean it allows you to assign the names but not reference them?
Yes, that'd be a bit silly.

-Robin

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