Sanitize image links and handle nils in the toc formatter. #5445

Based on contribution by Yuki Kita.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3811 e93f8b46-1217-0410-a6f0-8f06a7374b81

lib/redmine/wiki_formatting/textile/formatter.rb

@@ -67,7 +67,9 @@ module Redmine
           toc_item = content.gsub(/(\[\[([^\]\|]*)(\|([^\]]*))?\]\])/) { $4 || $2 }
           # sanitizes titles from links
           # see redcloth3.rb, same as "#{pre}#{text}#{post}"
-          toc_item.gsub!(LINK_RE) { $2+$4+$9 }
+          toc_item.gsub!(LINK_RE) { [$2, $4, $9].join }
+          # sanitizes image links from titles
+          toc_item.gsub!(IMAGE_RE) { [$5].join }
           # removes styles
           # eg. %{color:red}Triggers% => Triggers
           toc_item.gsub! %r[%\{[^\}]*\}([^%]+)%], '\\1'