wireprotov2peer: properly format errors formatrichmessage() expects an iterable containing dicts with well-defined keys. We were passing in something else. This caused an exception. Change the code to call formatrichmessage() with the proper argument. And add a TODO to potentially emit the proper data structure from the server in the first place. Differential Revision: https://phab.mercurial-scm.org/D4441

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from __future__ import absolute_import

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from mercurial.i18n import _

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from mercurial import (

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        changegroup,

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        error,

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        extensions

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    )

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def abort(orig, *args, **kwargs):

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    raise error.Abort(_('this is an exercise'))

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def uisetup(ui):

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    extensions.wrapfunction(changegroup, 'getbundler', abort)