[PATCH 2 of 6 V2] commit: change "editform" to distinguish merge commits from other (--amend)

[FUJIWARA Katsunori]

# HG changeset patch
# User FUJIWARA Katsunori <foozy at lares.dti.ne.jp>
# Date 1408153439 -32400
#      Sat Aug 16 10:43:59 2014 +0900
# Node ID 43418aeccb4ac3ca75ec491992d06fd8b27d9f4b
# Parent  f0696558121936dda9d391ee5503640d9059361b
commit: change "editform" to distinguish merge commits from other (--amend)

"editform" argument for "getcommiteditor" is decided according to the
format below:

  COMMAND[.ROUTE]

  - COMMAND: name of command
  - ROUTE: name of route, if there are two or more routes in COMMAND

This patch uses "amend.normal" and "amend.merge" as ROUTE of
"editform" instead of "amend", to distinguish merge commits from other
in "hg commit --amend" case.

diff --git a/mercurial/cmdutil.py b/mercurial/cmdutil.py
--- a/mercurial/cmdutil.py
+++ b/mercurial/cmdutil.py
@@ -2131,7 +2131,7 @@
 
                 user = opts.get('user') or old.user()
                 date = opts.get('date') or old.date()
-            editform = 'commit.amend'
+            editform = mergeeditform(old, 'commit.amend')
             editor = getcommiteditor(editform=editform, **opts)
             if not message:
                 editor = getcommiteditor(edit=True, editform=editform)
diff --git a/mercurial/help/config.txt b/mercurial/help/config.txt
--- a/mercurial/help/config.txt
+++ b/mercurial/help/config.txt
@@ -394,7 +394,8 @@
 messages for each actions.
 
 - ``changeset.backout`` for :hg:`backout`
-- ``changeset.commit.amend`` for :hg:`commit --amend`
+- ``changeset.commit.amend.merge`` for :hg:`commit --amend` on merges
+- ``changeset.commit.amend.normal`` for :hg:`commit --amend` on other
 - ``changeset.commit.normal.merge`` for :hg:`commit` on merges
 - ``changeset.commit.normal.normal`` for :hg:`commit` on other
 - ``changeset.fetch`` for :hg:`fetch` (impling merge commit)
diff --git a/tests/test-commit-amend.t b/tests/test-commit-amend.t
--- a/tests/test-commit-amend.t
+++ b/tests/test-commit-amend.t
@@ -145,7 +145,12 @@
 
 Test -u/-d:
 
-  $ hg ci --amend -u foo -d '1 0'
+  $ cat > .hg/checkeditform.sh <<EOF
+  > env | grep HGEDITFORM
+  > true
+  > EOF
+  $ HGEDITOR="sh .hg/checkeditform.sh" hg ci --amend -u foo -d '1 0'
+  HGEDITFORM=commit.amend.normal
   saved backup bundle to $TESTTMP/.hg/strip-backup/1cd866679df8-amend-backup.hg (glob)
   $ echo a >> a
   $ hg ci --amend -u foo -d '1 0'
@@ -619,7 +624,8 @@
   zz renamed from z:69a1b67522704ec122181c0890bd16e9d3e7516a
   $ hg debugrename cc
   cc not renamed
-  $ hg ci --amend -m 'merge bar (amend message)'
+  $ HGEDITOR="sh .hg/checkeditform.sh" hg ci --amend -m 'merge bar (amend message)' --edit
+  HGEDITFORM=commit.amend.merge
   $ hg log --config diff.git=1 -pr .
   changeset:   24:832b50f2c271
   tag:         tip