--- /dev/null
+Seen while deleting a blog's calendar pages:
+
+--[[Joey]]
+
+<pre>
+ 427250f..ff6c054 master -> origin/master
+Use of uninitialized value $file in pattern match (m//) at /usr/share/perl5/IkiWiki.pm line 688.
+Use of uninitialized value $file in substitution (s///) at /usr/share/perl5/IkiWiki.pm line 668.
+Use of uninitialized value $base in exists at /usr/share/perl5/IkiWiki.pm line 692.
+Use of uninitialized value $file in pattern match (m//) at /usr/share/perl5/IkiWiki.pm line 688.
+Use of uninitialized value $file in substitution (s///) at /usr/share/perl5/IkiWiki.pm line 668.
+Use of uninitialized value $base in exists at /usr/share/perl5/IkiWiki.pm line 692.
+Use of uninitialized value $file in pattern match (m//) at /usr/share/perl5/IkiWiki.pm line 688.
+Use of uninitialized value $file in substitution (s///) at /usr/share/perl5/IkiWiki.pm line 668.
+Use of uninitialized value $base in exists at /usr/share/perl5/IkiWiki.pm line 692.
+Use of uninitialized value $file in pattern match (m//) at /usr/share/perl5/IkiWiki.pm line 688.
+Use of uninitialized value $file in substitution (s///) at /usr/share/perl5/IkiWiki.pm line 668.
+Use of uninitialized value $base in exists at /usr/share/perl5/IkiWiki.pm line 692.
+Use of uninitialized value $file in pattern match (m//) at /usr/share/perl5/IkiWiki.pm line 688.
+Use of uninitialized value $file in substitution (s///) at /usr/share/perl5/IkiWiki.pm line 668.
+Use of uninitialized value $base in exists at /usr/share/perl5/IkiWiki.pm line 692.
+Use of uninitialized value $file in pattern match (m//) at /usr/share/perl5/IkiWiki.pm line 688.
+Use of uninitialized value $file in substitution (s///) at /usr/share/perl5/IkiWiki.pm line 668.
+Use of uninitialized value $base in exists at /usr/share/perl5/IkiWiki.pm line 692.
+Use of uninitialized value $file in pattern match (m//) at /usr/share/perl5/IkiWiki.pm line 688.
+Use of uninitialized value $file in substitution (s///) at /usr/share/perl5/IkiWiki.pm line 668.
+Use of uninitialized value $base in exists at /usr/share/perl5/IkiWiki.pm line 692.
+Use of uninitialized value $file in pattern match (m//) at /usr/share/perl5/IkiWiki.pm line 688.
+Use of uninitialized value $file in substitution (s///) at /usr/share/perl5/IkiWiki.pm line 668.
+Use of uninitialized value $base in exists at /usr/share/perl5/IkiWiki.pm line 692.
+Use of uninitialized value $file in pattern match (m//) at /usr/share/perl5/IkiWiki.pm line 688.
+Use of uninitialized value $file in substitution (s///) at /usr/share/perl5/IkiWiki.pm line 668.
+Use of uninitialized value $base in exists at /usr/share/perl5/IkiWiki.pm line 692.
+Use of uninitialized value $file in pattern match (m//) at /usr/share/perl5/IkiWiki.pm line 688.
+Use of uninitialized value $file in substitution (s///) at /usr/share/perl5/IkiWiki.pm line 668.
+Use of uninitialized value $base in exists at /usr/share/perl5/IkiWiki.pm line 692.
+Use of uninitialized value $file in pattern match (m//) at /usr/share/perl5/IkiWiki.pm line 688.
+Use of uninitialized value $file in substitution (s///) at /usr/share/perl5/IkiWiki.pm line 668.
+Use of uninitialized value $base in exists at /usr/share/perl5/IkiWiki.pm line 692.
+Use of uninitialized value $file in pattern match (m//) at /usr/share/perl5/IkiWiki.pm line 688.
+Use of uninitialized value $file in substitution (s///) at /usr/share/perl5/IkiWiki.pm line 668.
+Use of uninitialized value $base in exists at /usr/share/perl5/IkiWiki.pm line 692.
+Use of uninitialized value $file in pattern match (m//) at /usr/share/perl5/IkiWiki.pm line 688.
+Use of uninitialized value $file in substitution (s///) at /usr/share/perl5/IkiWiki.pm line 668.
+Use of uninitialized value $base in exists at /usr/share/perl5/IkiWiki.pm line 692.
+Use of uninitialized value $file in pattern match (m//) at /usr/share/perl5/IkiWiki.pm line 688.
+Use of uninitialized value $file in substitution (s///) at /usr/share/perl5/IkiWiki.pm line 668.
+Use of uninitialized value $base in exists at /usr/share/perl5/IkiWiki.pm line 692.
+Use of uninitialized value $file in pattern match (m//) at /usr/share/perl5/IkiWiki.pm line 688.
+Use of uninitialized value $file in substitution (s///) at /usr/share/perl5/IkiWiki.pm line 668.
+Use of uninitialized value $base in exists at /usr/share/perl5/IkiWiki.pm line 692.
+Use of uninitialized value $file in pattern match (m//) at /usr/share/perl5/IkiWiki.pm line 688.
+Use of uninitialized value $file in substitution (s///) at /usr/share/perl5/IkiWiki.pm line 668.
+Use of uninitialized value $base in exists at /usr/share/perl5/IkiWiki.pm line 692.
+Use of uninitialized value $file in pattern match (m//) at /usr/share/perl5/IkiWiki.pm line 688.
+Use of uninitialized value $file in substitution (s///) at /usr/share/perl5/IkiWiki.pm line 668.
+Use of uninitialized value $base in exists at /usr/share/perl5/IkiWiki.pm line 692.
+Use of uninitialized value $file in pattern match (m//) at /usr/share/perl5/IkiWiki.pm line 688.
+Use of uninitialized value $file in substitution (s///) at /usr/share/perl5/IkiWiki.pm line 668.
+Use of uninitialized value $base in exists at /usr/share/perl5/IkiWiki.pm line 692.
+Use of uninitialized value $file in pattern match (m//) at /usr/share/perl5/IkiWiki.pm line 688.
+Use of uninitialized value $file in substitution (s///) at /usr/share/perl5/IkiWiki.pm line 668.
+Use of uninitialized value $base in exists at /usr/share/perl5/IkiWiki.pm line 692.
+Use of uninitialized value $file in pattern match (m//) at /usr/share/perl5/IkiWiki.pm line 688.
+Use of uninitialized value $file in substitution (s///) at /usr/share/perl5/IkiWiki.pm line 668.
+Use of uninitialized value $base in exists at /usr/share/perl5/IkiWiki.pm line 692.
+Use of uninitialized value $file in pattern match (m//) at /usr/share/perl5/IkiWiki.pm line 688.
+Use of uninitialized value $file in substitution (s///) at /usr/share/perl5/IkiWiki.pm line 668.
+Use of uninitialized value $base in exists at /usr/share/perl5/IkiWiki.pm line 692.
+Use of uninitialized value $file in pattern match (m//) at /usr/share/perl5/IkiWiki.pm line 688.
+Use of uninitialized value $file in substitution (s///) at /usr/share/perl5/IkiWiki.pm line 668.
+Use of uninitialized value $base in exists at /usr/share/perl5/IkiWiki.pm line 692.
+Use of uninitialized value $file in pattern match (m//) at /usr/share/perl5/IkiWiki.pm line 688.
+Use of uninitialized value $file in substitution (s///) at /usr/share/perl5/IkiWiki.pm line 668.
+Use of uninitialized value $base in exists at /usr/share/perl5/IkiWiki.pm line 692.
+Use of uninitialized value $file in pattern match (m//) at /usr/share/perl5/IkiWiki.pm line 688.
+Use of uninitialized value $file in substitution (s///) at /usr/share/perl5/IkiWiki.pm line 668.
+Use of uninitialized value $base in exists at /usr/share/perl5/IkiWiki.pm line 692.
+Use of uninitialized value $file in pattern match (m//) at /usr/share/perl5/IkiWiki.pm line 688.
+Use of uninitialized value $file in substitution (s///) at /usr/share/perl5/IkiWiki.pm line 668.
+Use of uninitialized value $base in exists at /usr/share/perl5/IkiWiki.pm line 692.
+Use of uninitialized value $file in pattern match (m//) at /usr/share/perl5/IkiWiki.pm line 688.
+Use of uninitialized value $file in substitution (s///) at /usr/share/perl5/IkiWiki.pm line 668.
+Use of uninitialized value $base in exists at /usr/share/perl5/IkiWiki.pm line 692.
+</pre>
+