wireproto: properly report server Abort during 'getbundle' Previously Abort raised during 'getbundle' call poorly reported (HTTP-500 for http, some scary messages for ssh). Abort error have been properly reported for "push" for a long time, there is not reason to be different for 'getbundle'. We properly catch such error and report them back the best way available. For bundle, we issue a valid bundle2 reply (as expected by the client) with an 'error:abort' part. With bundle1 we do as best as we can depending of http or ssh.

from __future__ import absolute_import

from mercurial.i18n import _
from mercurial import (
        changegroup,
        error,
        extensions
    )

def abort(orig, *args, **kwargs):
    raise error.Abort(_('this is an exercise'))

def uisetup(ui):
    extensions.wrapfunction(changegroup, 'getbundler', abort)