commit: lose some pointless 'nothing changed' messages

Move message from localrepo to commands. This drops confusing messages
in subrepo, import, and rebase.

mercurial/commands.py

@@ -665,6 +665,7 b' def commit(ui, repo, *pats, **opts):'
 
     node = cmdutil.commit(ui, repo, commitfunc, pats, opts)
     if not node:
+        ui.status(_("nothing changed\n"))
         return
     cl = repo.changelog
     rev = cl.rev(node)

mercurial/localrepo.py

@@ -860,7 +860,6 b' class localrepository(repo.repository):'
             if (not force and not extra.get("close") and p2 == nullid
                 and not (changes[0] or changes[1] or changes[2])
                 and self[None].branch() == self['.'].branch()):
-                self.ui.status(_("nothing changed\n"))
                 return None
 
             ms = merge_.mergestate(self)

tests/test-patch.out

@@ -9,4 +9,3 b' updating working directory'
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 applying ../a.diff
 Using custom patch
-nothing changed

tests/test-rebase-mq-skip.out

@@ -6,7 +6,6 b' applying p1.patch'
 
 % Rebase
 1 files updated, 0 files merged, 1 files removed, 0 files unresolved
-nothing changed
 saving bundle to 
 adding branch
 adding changesets

tests/test-rebase-scenario-global.out

@@ -52,7 +52,6 b' o | 2: D'
 o  0: A
 
 % C onto F - skip of E
-nothing changed
 saving bundle to 
 adding branch
 adding changesets
@@ -71,7 +70,6 b' o 2: D'
 o  0: A
 
 % D onto C - rebase of a branching point (skip E)
-nothing changed
 saving bundle to 
 adding branch
 adding changesets

tests/test-subrepo.out

@@ -3,13 +3,11 b' adding a'
 % add first sub
 adding a
 committing subrepository s
-nothing changed
 % add sub sub
 committing subrepository s
 committing subrepository ss
 % bump sub rev
 committing subrepository s
-nothing changed
 % leave sub dirty
 committing subrepository s
 changeset:   3:1c833a7a9e3a