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From: Lorenzo Bettini (bettini_at_[hidden])
Date: 2007-04-26 12:11:48

John Maddock wrote:
> Lorenzo Bettini wrote:
>> Hi
>> is there any plan to support more than 9 back references in the regex
>> library?
> You can have as many marked sub-expressions as you want, and refer to them

yes I'm already using this

> in the match_results structure once you have a match. What you can't do at
> present is have a true back-reference say \12 in your expression. This is

and that's what I'd need: I need to build a long regex made up by many
alternatives (each of one is a subexpression), and thus, I reach the
back-reference limitation quite easily.

> basically a problem with the regex syntax, so if you know of a good syntax
> extension that's already in use then it would trivial to support this.

actually, I've only read by googling that there are some regular
expression libraries providing more than 9 subexpressions, but I saw no
pointer to such libraries.


Lorenzo Bettini, PhD in Computer Science, DSI, Univ. di Firenze
ICQ# lbetto, 16080134     (GNU/Linux User # 158233)

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