I have a quick Thunderbird extension request for the throngs of aimless developers waiting to build software at my whim. When reviewing changes to a source code repository, such as Subversion or CVS, most tools offer nice syntax highlighting for the “diff” view.
Even on the command line, output of SVN and CVS commands can be “piped” into the command-line utility, colordiff, for a similar beautification.
Several projects I work on (or hang around pretending to work) have mailing lists of changes to CVS and SVN repositories. I’d love to see a Thunderbird extension that provided syntax highlighting for the diff format automatically in these emails.