When using the InterwikiPluginEarlyDev I tried to create some new inter-site links, and noticed that Aliases containing numbers were not valid. This included the C2find Alias on the InterSiteLinkRules page. Wiki:ValidWikiPage created an appropriate link, but C2find:ValidWikiPage did not.
I fixed this in Plugins.InterwikiPluginEarlyDev.pm by changing line 45 to:
$interSiteNamePattern = '([A-Z][A-Za-z0-9]+)';
-- ScottDrennan - 26 Jul 2001
Bug or feature request, that is the question. I added the new rule to the Plugins.Plugins.InterwikiPluginEarlyDev.
-- PeterThoeny - 27 Jul 2001