[PATCH 4 of 4 V3 RESEND] ui: edit(): transplant: set HGREVISION environment variable for an editor

[Augie Fackler]

On Feb 16, 2014, at 10:29 PM, Alexander Drozdov <al.drozdov at gmail.com> wrote:

> # HG changeset patch
> # User Alexander Drozdov <al.drozdov at gmail.com>
> # Date 1392001990 -14400
> #      Mon Feb 10 07:13:10 2014 +0400
> # Node ID e542767e79c75eee903fd03d85818798a1ad4ab8
> # Parent  3dc40b4b56301758c818e374df04af72f36bb7de
> ui: edit(): transplant: set HGREVISION environment variable for an editor

Looks handy, queued, thanks.

> 
> transplant command set 'transplant_source' extra for the revision.
> Allow an editor to access the extra using HGREVISION environment variable.
> 
> This may be useful when an editor is actually a script which modifies a commit
> message. Transplant filters is an alternative way to do it.
> 
> diff --git a/mercurial/ui.py b/mercurial/ui.py
> --- a/mercurial/ui.py
> +++ b/mercurial/ui.py
> @@ -8,6 +8,7 @@
> from i18n import _
> import errno, getpass, os, socket, sys, tempfile, traceback
> import config, scmutil, util, error, formatter
> +from node import hex
> 
> class ui(object):
>     def __init__(self, src=None):
> @@ -721,6 +722,8 @@
>             f.close()
> 
>             environ = {'HGUSER': user}
> +            if 'transplant_source' in extra:
> +                environ.update({'HGREVISION': hex(extra['transplant_source'])})
>             for label in ('source', 'rebase_source'):
>                 if label in extra:
>                     environ.update({'HGREVISION': extra[label]})
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