ikiwiki/doc/bugs/cgi_does_not_use_templatedir_overlay.mdwn

I have set

     templatedir => "/srv/apache2/madduck.net/templates",

in ikiwiki.setup and put a custom ``page.tmpl`` in there, then called ``ikiwiki --setup`` and verified that it works. It even works when I push to the Git repo and let the receive-hook update the wiki.

However, when I make a change via the CGI (which has been created by the last setup run), it applies the default ``page.tmpl`` file to all pages it updates.

> This issue can arise in at least two ways:
> 
> 1. A permissions problem with the templatedir that prevents ikiwiki from
>    accessing it. If it can't access it, it silently falls back to using
>    templates from the default directory.
> 2. A templatedir that doesn't have an absolute path. In this case ikiwiki
>    will look relative to *somewhere*, which will sometimes work and
>    sometimes not. Clearly not a good idea.
>
> So far that's the only ways that I can see that this could happen.
> It would be possible to make ikiwiki try to detect these sorts of
> problems; it could check if the templatedir exists, and check that it's
> readable. This would add some extra system calls to every ikiwiki run,
> and I'm not convinced it's worth it. --[[Joey]]