# HG changeset patch
# User Dov Feldstern <dfeldstern@gmail.com>
# Date 1337537494 -10800
# Node ID 2e3513e7348a1bc8501e510f1f0632073194b2cd
# Parent  d0b9ebba41e9a1733294d5fa1b497ada5eda93c8
subrepo: make subrepo.subrepo(<not a subrepo path>) fail

Until now, when calling subrepo.subrepo with a path at which there is no
subrepo, a "nullstate" tuple would be returned. However, this is not very
useful (the tuple can't really be used for creating a subrepo), so we'd just as
soon have the function just fail, and leave it up to the caller to decide what
to do.

The motivation for doing this now is to simplify the solution for (issue3056).

diff -r d0b9ebba41e9 -r 2e3513e7348a mercurial/subrepo.py
--- a/mercurial/subrepo.py	Sun May 20 14:40:36 2012 -0500
+++ b/mercurial/subrepo.py	Sun May 20 21:11:34 2012 +0300
@@ -268,7 +268,7 @@
     hg = h
 
     scmutil.pathauditor(ctx._repo.root)(path)
-    state = ctx.substate.get(path, nullstate)
+    state = ctx.substate[path]
     if state[2] not in types:
         raise util.Abort(_('unknown subrepo type %s') % state[2])
     return types[state[2]](ctx, path, state[:2])