My page.tmpl can contain:

Created <TMPL_VAR CTIME>.  Last edited <TMPL_VAR MTIME>.

and that works. However, if I have the same line in inlinepage.tmpl or archivepage.tmpl, then only the CTIME works - the MTIME is blank. This leads to an annoying inconsistency.

Update - even though I'm not a Perl programmer, this patch seems right:

--- /home/bothner/ikiwiki/ikiwiki/IkiWiki/Plugin/inline.pm  2008-10-01 14:29:11.000000000 -0700
+++ ./inline.pm 2008-10-12 13:26:11.000000000 -0700
@@ -316,6 +316,7 @@
                $template->param(pageurl => urlto(bestlink($params{page}, $page), $params{destpage}));
                $template->param(title => pagetitle(basename($page)));
                $template->param(ctime => displaytime($pagectime{$page}, $params{timeformat}));
+               $template->param(mtime => displaytime($pagemtime{$page}, $params{timeformat}));
                $template->param(first => 1) if $page eq $list[0];
                $template->param(last => 1) if $page eq $list[$#list];  

done, thanks