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RE: cygwin/regex is non-POSIX
- From: "Peter J. Acklam" <pjacklam at online dot no>
- To: cygwin <cygwin at cygwin dot com>, sds at gnu dot org
- Date: Tue, 20 Jan 2004 10:17:06 +0100
- Subject: RE: cygwin/regex is non-POSIX
sds@gnu.org wrote.
>
> Finally, a common extension appears to be the use or "?" after
> a repetition specification to mean non-greedy matching, e.g.
> "a+?" will match only the first "a" in "aaaa".
Just a small historical note: This extension first appeared in
Perl some 10+ years ago. It is used after the quantifiers ?, *,
+, and {m,n} to get "non-greedy" or "minimal" matching. The
extension became popular and now implemented in several regex
engines.
Peter
--
Peter J. Acklam - pjacklam@online.no - http://home.online.no/~pjacklam
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