In the context of the regex dialect of XSLT 2.0, I am looking for two "meta-regexes" that analyse other regexes. Each is discussed in a part of its own. (Part 1 posted as: Meta-regex for variable-length matching regexes (XSLT)) Part 2 Aim: A regex that provides for pre-calculating the length of the match that a fixed-length matching ...

In the context of the regex dialect of XSLT 2.0, I am looking for two "meta-regexes" that analyse other regexes. Each is discussed in a part of its own. (Part 2 posted as: Meta-regex to find fixed length of regex match (XSLT)) Part 1 Aim: A regex that would identify all those regexes that might yield matches of varying length, as ...

I am using pcre regex. And i need to find out if two strings are of equal length or not. Any idea how it can be accomplish. An example of match would be abcd 1234 here abcd and 1234 will match because they have same length. but abcd abcde would not match because length is different. I can only use regex for this purpose.