Fix dispatch error message when not in a repo

mercurial/cmdutil.py

@@ -320,6 +320,9 b' def dispatch(ui, args):'
                 raise util.Abort(_("repository '%s' is not local") % path)
         except hg.RepoError:
             if cmd not in commands.optionalrepo.split():
+                if not path:
+                    raise hg.RepoError(_("There is no Mercurial repository here"
+                                         " (.hg not found)"))
                 raise
         d = lambda: func(ui, repo, *args, **cmdoptions)
     else:

tests/test-dispatch

@@ -17,3 +17,9 b' cat = -v'
 EOF
 hg cat a
 
+echo '% no repo'
+cd ..
+hg cat
+
+exit 0
+ 
  No newline at end of file

tests/test-dispatch.out

@@ -28,3 +28,5 b' use "hg -v help cat" to show global opti'
 % [defaults]
 a
 a
+% no repo
+abort: There is no Mercurial repository here (.hg not found)!