errors: raise more specific errors when default remote not configured

Differential Revision: https://phab.mercurial-scm.org/D9312

mercurial/commands.py

@@ -4903,7 +4903,7 b' def outgoing(ui, repo, dest=None, **opts'
     # style URLs, so don't overwrite dest.
     path = ui.paths.getpath(dest, default=(b'default-push', b'default'))
     if not path:
-        raise error.Abort(
+        raise error.ConfigError(
             _(b'default repository not configured!'),
             hint=_(b"see 'hg help config.paths'"),
         )
@@ -5524,7 +5524,7 b' def push(ui, repo, dest=None, **opts):'
 
     path = ui.paths.getpath(dest, default=(b'default-push', b'default'))
     if not path:
-        raise error.Abort(
+        raise error.ConfigError(
             _(b'default repository not configured!'),
             hint=_(b"see 'hg help config.paths'"),
         )

tests/test-default-push.t

@@ -20,7 +20,7 b" Push should provide a hint when both 'de"
   $ hg push --config paths.default=
   abort: default repository not configured!
   (see 'hg help config.paths')
-  [255]
+  [30]
 
   $ cd ..