Specifically, I'm using the Linux command:
$ find . -regextype posix-extended -regex '<some regex>' ...
I just want to make sure the POSIX type I'm using is the type Perl uses, since that is by far the one I am most familiar with.
views:
147answers:
5
+8
A:
Perl's regular expression engine is Perl's regular expression engine. perl defines Perl.
For details, see perldoc perlreref.
Sinan Ünür
2010-04-07 16:21:14
+5
A:
Perl uses Perl regular expressions, not POSIX ones. You can compare the syntaxes yourself, for example in regex(7).
wRAR
2010-04-07 16:22:54
+8
A:
Perl has defined its own standard for regexes. E.g., there are systems such as PCRE, which stands for Perl Compatible Regular Expressions.
Paul Nathan
2010-04-07 16:23:14
Or Perl-Compatible Regular Expression, right?
Cameron
2010-04-07 16:24:16
+1, although note that PCRE isn't completely Perl-compatible.
Josh Kelley
2010-04-07 16:25:02
*The name is misleading, because PCRE is Perl-compatible only if you consider a subset of PCRE's settings and a subset of Perl's regular expression facilities.* http://en.wikipedia.org/wiki/PCRE
Sinan Ünür
2010-04-07 16:25:45
Paul Nathan
2010-04-07 19:35:31
+1
A:
Perl's regexes are more like the Posix extended ones. Basic posix regular expressions use ( and { to match the actual characters, and \( and \{ as special characters, but the Posix extended ones use ( and { for the same meaning as in Perl and \( or \{ to match the actual characters, the same as Perl. So posix-extended is what you want.
Kinopiko
2010-04-07 16:24:11
+5
A:
Per perldoc perlhist, Perl 0 ("Classified. Don't ask.") used basic regular expressions. All versions since, starting with Perl 1.000 in December of '87, have used extended regular expressions (and extended on those...).
ysth
2010-04-08 02:44:19