Available in a git repository branch.
Branch: anarcat/geo-scheme
Author: anarcat

Trivial patch to add the geo: URI scheme:

modified   IkiWiki/Plugin/htmlscrubber.pm
@@ -25,8 +25,8 @@ sub import {
        "sip", "sips", "snmp", "tel", "urn", "wais", "xmpp",
        "z39.50r", "z39.50s",
        # Selected unofficial schemes
-      "aim", "callto", "cvs", "ed2k", "feed", "fish", "gg",
-      "irc", "ircs", "lastfm", "ldaps", "magnet", "mms",
+      "aim", "callto", "cvs", "ed2k", "feed", "fish", "geo",
+      "gg", "irc", "ircs", "lastfm", "ldaps", "magnet", "mms",
        "msnim", "notes", "rsync", "secondlife", "skype", "ssh",
        "sftp", "smb", "sms", "snews", "webcal", "ymsgr",
        "bitcoin", "git", "svn", "bzr", "darcs", "hg"

-- anarcat

done! — Jon, 2024-03-05