[PATCH 2 of 2 STABLE] setup: filter out devel-warn messages from system hg

[Augie Fackler]

queued these

> On Oct 23, 2017, at 23:19, Kevin Bullock <kbullock+mercurial at ringworld.org> wrote:
> 
> # HG changeset patch
> # User Kevin Bullock <kbullock+mercurial at ringworld.org>
> # Date 1508814839 18000
> #      Mon Oct 23 22:13:59 2017 -0500
> # Branch stable
> # Node ID adc50614340e952d8e98f5948d35b7bf632c2232
> # Parent  f13a8d056d6ebf490e65096391fdcd5916197f48
> setup: filter out devel-warn messages from system hg
> 
> If we're going to use the user's installed and configured hg command
> (which we do since 8b20338b989e), we should prevent devel-warn messages
> from interfering with locating it.
> 
> diff --git a/setup.py b/setup.py
> --- a/setup.py
> +++ b/setup.py
> @@ -218,7 +218,8 @@ def filterhgerr(err):
>     err = [e for e in err.splitlines()
>            if (not e.startswith(b'not trusting file')
>                and not e.startswith(b'warning: Not importing')
> -               and not e.startswith(b'obsolete feature not enabled'))]
> +               and not e.startswith(b'obsolete feature not enabled')
> +               and not e.startswith(b'devel-warn:'))]
>     return b'\n'.join(b'  ' + e for e in err)
> 
> def findhg():
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