I'm trying to store some Windows PowerShell scripts in a Mercurial repository. It seems the PowerShell editor likes to save files as UTF-16 Unicode. This means that there are lots of \0 bytes, which is what Mercurial uses to distinguish between "text" and "binary" files. I understand that this makes no difference to how Mercurial stores the data, but it does mean that it displays binary diffs, which are kind of hard to read. Is there a way to tell Mercurial that these really are text files? Presumably I would need to convince Mercurial to use an external Unicode-aware diff program for particular file types.