On Thu, 23 Aug 2001, Thomas Eibner wrote: > On Wed, Aug 22, 2001 at 10:59:27PM -0400, Rich Bowen wrote: > > On Wed, 22 Aug 2001, Rich Bowen wrote: > > > > > Is there any treatment, anywhere in the Apache documentation, of what > > > flavor of regular expressions are supported by Apache directives? I > > > can't find it, but perhaps I'm just overlooking it, and will find it > > > as soon as I send this. > > > > OK, so immediately after I sent this, I found the following in > > mod_include.html: > > > > Regular expressions have the same syntax as those found in the Unix > > egrep command. > > > > This is, as far as I can find so far, the only specific explanation of > > what regex syntax Apache supports. > > > > FAQ-B states that "We implement a simple subset of Perl's regex > > support" which is pretty darned vague. > > > > man egrep has a really good regex explanation. The only question I'm > > left with is how to get it to do case-insensitive pattern matching, > > since egrep does this with a command line switch (-i) rather than in > > the regex itself. > > I take it /i doesn't work, right? (Which of course is what you'd use in > perl)
No, the / character does not have special meaning in these regular expressions. More specifically, there is no delimiter, as there is in Perl. You just have a string, and that is the regex. Perl has a character that indicates the start and end of the pattern. While this is traditionally / it can be anything. But, since there is no such character used, you can't put switches like Perl's /i or /s or whatever on the end after the closing delimiter. egrep is the same way (same as apache that is) in that you just provide a string egrep "patt?[eu]rn" file.name The quotes are optional if the pattern does not contain any special characters. -- Who can say where the road goes Where the day flows Only time --Pilgrim (Enya - A Day Without Rain) --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
