I just tried to clone the git repo onto a windows machine to test things out a bit and it turns out i cannot even successfully checkout the code because of those colons. Would a patch changing those to underscores be accepted?
+
+> Well, this is a difficult thing. Ikiwiki has a configuration setting to
+> prevent it writing filenames with colons, but for backwards compatability
+> that is not enabled by default. Also nothing would stop people from
+> making commits that added filenames with colons even if it were disabled
+> in ikiwiki. I don't know that trying to work around obscure limitations
+> in OSs that I've never heard of ikiwiki being used on is worth the bother
+> TBH, but have not really made up my mind. --[[Joey]]