[Mailman-Users] Help with a regular expression

Richard Barrett r.barrett at openinfo.demon.co.uk
Sat Jan 18 20:15:31 CET 2003

At 14:46 18/01/2003, Greg Westin wrote:
>I think what you want to do to fix this is add a carat ("^") before the
>first slash:
>RedirectMatch ^/mailman[/]*$ http://www.example.com/mailman/listinfo
>That way, it only catches it if "/mailman" occurs at the beginning of
>the string.
>Personally, I use a little more inclusive regular expression, because I
>want it to also redirect any requests for the top level
>(http://lists.example.com) to the listinfo page:
>     RewriteRule ^[/]{0,1}(mailman[/]{0,1}){0,1}$    /mailman/listinfo

What's wrong with:

     RedirectMatch permanent ^/mailman(|/)$ /mailman/listinfo

or, if you have mod_rewrite and the rewrite engine on:

     RewriteRule ^/mailman(|/)$ /mailman/listinfo [R,L]

or even better:

     RewriteRule ^/mailman(|/)$ /mailman/listinfo [PT]

The latter has the advantage, courtesy of the PT flag, of delivering the 
/mailman/listinfo page immediately instead of making the browser do a 
second request (each time it visits) to follow the redirection response 
produced by the initial request, if that request's URI path was /mailman or 

>I claim to be no master of regular expressions, though... because wow
>that looks ugly.  That notwithstanding, I think my advice on your
>situation is correct.
>On Saturday, January 18, 2003, at 02:09  AM, Paul Kleeberg wrote:
>>I know this is a simple question but I don't have the knowledge to
>>figure it out.
>>I am running RedHat 8.0 and which came with Mailman 2.0.13.  It
>>suggests adding the following to the httpd.conf file:
>># Uncomment the following line, replacing www.example.com with your
>># name, to redirect queries to /mailman to the listinfo page
>># RedirectMatch /mailman[/]*$ http://www.example.com/mailman/listinfo
>>That used to work fine.  I just upgraded to Mailman 2.1.  I created
>>the list "mailman" as instructed at the end of section 4 of the
>>INSTALL document but cannot get to the administrative page
>>http://www.example.com/mailman/admin/mailman or the list overview page
>>http://www.example.com/mailman/listinfo/mailman because
>>"RedirectMatch" thinks it is http://www.example.com/mailman and just
>>redirects it the top level listinfo page.
>>I am aware that I have two options:
>>   1. Rename the "mailman" list
>>   2. Remove the "RedirectMatch" statement from the httpd.conf file.
>>Is there a third?  I tried fiddling with the regular expression, but I
>>just do not know what I am doing.  Any help would be appreciated.
>>Paul Kleeberg, M.D.              O   o          paul at fpen.org
>>Family Physicians' E-Net        -+---+-   Voice: 612-840-3744
>>5025 Mulcare Drive               |_o_|      Family Practice &
>>Columbia Heights, MN 55421 USA  / \|/ \  Information Services
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