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| From: | Bob Proulx |
| Subject: | [bug #14243] Basic regular expressions does not work |
| Date: | Tue, 23 Aug 2005 00:01:36 -0600 |
| User-agent: | Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.8) Gecko/20050517 Firefox/1.0.4 (Debian package 1.0.4-2) |
Follow-up Comment #5, bug #14243 (project findutils):
> So I guess \{ \} are part of basic regular expressions?
No. In basic regular expressions those would be invalid character escapes.
So that is not a valid POSIX basic regular expression. Because you would not
find those in a valid POSIX BRE implementations such as the GNU RE engine are
free to use them to enable the extended regular expression behavior for those
characters. This is also true of \+ too for example. It is a way to extend
the basic regular expressions in a way compatible with and not conflicting
with POSIX BREs.
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