[pmwiki-users] Multiple CategoryGroups: 404 header

Petko Yotov 5ko at free.fr
Tue Sep 26 12:25:20 CDT 2006

On Tuesday 26 September 2006 18:25, you wrote:
> However, in the meantime you can get PmWiki to not return 404
> result codes for pages in those groups.  The easiest way may
> be to create a per-group configuration file for each group
> that contains:
>     <?php  if (!defined('PmWiki')) exit();
>       $DefaultPageTextFmt = '';
>       $PageNotFoundHeaderFmt = 'HTTP/1.1 200 Ok';

Thank you, Patrick, this works! I am very happy as I've been tinkering for 3 
days without success. Wow! :-) :-)

> > I tried to copy and adapt the code from stdmarkup.php to config.php:
> >
> >  $pagename = ResolvePageName($pagename);
> >  ## [[?Tag]]
> FWIW, using separate punctuation characters for each extra
> category *could* lead to some problems down the road, especially
> since some of them (such as '?') already have another meaning in
> certain contexts.
> In reality, there's not much special about the [[!Category]] markup;
> one can create categories in other groups just by using the
> groupname:
>     [[Category/XYZ]]
>     [[Tags/XYZ]]
>     [[ProjectCategory/XYZ]]

It *is* special, because if there is no such category, the link renders as a 
normal link. The tip from Martin Fick (thanks Martin!) to patch pmwiki.php 
will probably do the job for the price of some inconviniences on upgrades.

But when I copy the code for the !Category it works, because ot the 'L' 
variable in:


I believe this 'L' causes the pmwiki.php function LinkPage to skip the 
PageExists check for the target page.

But from your suggestion about future problems and for the sake of simplicity, 
I am considering adding markups, containing the group names:

$MyCatGroups = array("Tag", "ProjectCategory", "ContactCategory");//etc.
foreach($MyCatGroups as $v)

One should also add spaced variants as "Project Category"; and /i as modifier.

It is probably more logical, better and saver to use such approach than 
[[?tag]], [[%project]], [[:calendar]] etc. But longer.

Best regards and thanks again,

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