In commitdiff function, it should show modificaed file and diff result following commit log. But in Windows with AppServ, there are nothing after log.
The cause is that caret(^ ) is escapted character in windows.
Please diff this file with viewgit-tree-0820af7
Should be fixed in ea4da187ae31e86a50f00ea7df17480f2e1f5051, thanks.
Worth noting that Windows needs some additional changes as mentioned in doc/HOWTO-IIS-php-fastcgi (namely in the archive part).