+
+>>The problem was using accented characters (é, í) on the change comments. I didn't have
+>>an UTF-8 locale enabled in my setup file. By coincidence this happened for the first time
+>>in a couple of consecutive blog posts, so I was mistaken about the root of the problem. I don't know if
+>>you will consider this behavior a bug, since it's strictly speaking a misconfiguration but it
+>>still causes ikiwiki's mercurial backend to fail. A quick note in the docs might be a good idea. For my part, please
+>>close this bug, and thanks for the help. --[[buo]]
+
+>>> So, in a non-utf8 locale, mercurial fails to commit if the commit
+>>> message contains utf8? --[[Joey]]