If page.tmpl is changed, it would be nice if ikiwiki automatically
noticed, and rebuilt all pages. If inlinepage.tmpl is changed, a rebuild
of all pages using it in an inline would be stellar.
This would allow setting:
templatedir => "$srcdir/templates",
.. and then the [[wikitemplates]] are managed like other wiki files; and
like other wiki files, a change to them automatically updates dependent
pages.
Originally, it made good sense not to have the templatedir inside the wiki.
Those templates can be used to bypass the htmlscrubber, and you don't want
just anyone to edit them. But the same can be said of style.css and
ikiwiki.js, which are in the wiki. We rely on allowed_attachments
being set to secure those to prevent users uploading replacements. And we
assume that users who can directly (non-anon) commit can edit them, and
that's ok.
So, perhaps the easiest way to solve this [[wishlist]] would be to
make templatedir default to "$srcdir/templates/, and make ikiwiki
register dependencies on page.tmpl, inlinepage.tmpl, etc, as they're
used. Although, having every page declare an explicit dep on page.tmpl
is perhaps a bit much; might be better to implement a special case for that
one. Also, having the templates be copied to destdir is not desirable.
The risk is that a site might have allowed_attachments set to "templates/"
or ".tmpl" something like that. I think such a configuration is the only
risk, and it's unlikely enough that a NEWS warning should suffice.
(This would also help to clear up the tricky disctinction between
wikitemplates and in-wiki templates.)
