record: fix display of non-ASCII names in chunk selection

b013baa3898e fixed display of non-ASCII names in file-selecting prompt, but
display in chunk selection remained broken. The reason is that using '%r' in
string formatting results in calling `repr` on file names, thus mangling
non-ASCII ones.

hgext/record.py

@@ -393,10 +393,10 b' the hunk is left unchanged.'
             if skipfile is None and skipall is None:
                 chunk.pretty(ui)
             if total == 1:
-                msg = _('record this change to %r?') % chunk.filename()
+                msg = _("record this change to '%s'?") % chunk.filename()
             else:
                 idx = pos - len(h.hunks) + i
-                msg = _('record change %d/%d to %r?') % (idx, total,
+                msg = _("record change %d/%d to '%s'?") % (idx, total,
                                                          chunk.filename())
             r, skipfile, skipall, newpatches = prompt(skipfile,
                     skipall, msg, chunk)