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- Subject: Lua patterns rule! (Re: Frontier capture)
- From: Asko Kauppi <asko.kauppi@...>
- Date: Wed, 15 Sep 2004 17:36:29 +0300
I need to give some praise to the Lua authors :) on the courage to go
upstream with the selected, unique set of regexp's or patterns, as used
in string.find() and string.gsub(). While I don't have much experience
with 'real' regexp's, the use of the provided set is compact, easy and
powerful. Well done!
The only thing that I've missed (which does exist in real regexp's) is
ability to logic-or strings, not just chars. I believe this has been
met by others as well, and is one motivation behind the regex addon
15.9.2004 kello 17:16, Roberto Ierusalimschy kirjoitti:
Looking at the source I would say its syntax is %f[set] and
it matches the transition from "not in set" to "in set".
I.e. %f[%w] matches the start and %f[%W] the end of a "word".
Exactly. It is not documented because we are not sure it is worth
providing this kind of facility.