add 'uisetup' function to extension module protocol.
if uisetup functin exists in extension, is called before cmdtable examined.
called with ui object as parameter. lets module modify cmdtable before
commands.py sees it.
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -3291,6 +3291,9 @@ def dispatch(args):
continue
for x in external:
+ uisetup = getattr(x, 'uisetup', None)
+ if uisetup:
+ uisetup(u)
cmdtable = getattr(x, 'cmdtable', {})
for t in cmdtable:
if t in table: