From patchwork Mon Feb 17 03:29:38 2014
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Subject: [4, of, 4, V3,
 RESEND] ui: edit(): transplant: set HGREVISION environment variable
 for an editor
From: Alexander Drozdov <al.drozdov@gmail.com>
X-Patchwork-Id: 3685
Message-Id: <e542767e79c75eee903f.1392607778@localhost6.localdomain6>
To: mercurial-devel@selenic.com
Date: Mon, 17 Feb 2014 07:29:38 +0400

# HG changeset patch
# User Alexander Drozdov <al.drozdov@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

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]})