import: change "editform" to distinguish merge commits from others

"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 "normal.normal" and "normal.merge" as ROUTE of
"editform" instead of "normal", to distinguish merge commits from
other in "hg import" without "--bypass" case.

This patch assumes "editform" variations for "hg import" below:

    import.normal.normal
    import.normal.merge
    import.bypass.normal
    import.bypass.merge

Unlike other patches in this series, this patch uses "editor.sh"
instead of "checkeditform.sh" for the name of the script to check
"HGEDITFORM", because it has to do more than checking "HGEDITFORM".

To invoke editor forcibly in "test-import-merge.t", this patch creates
the patch not having patch description as "merge.nomsg.diff".

mercurial/cmdutil.py

@@ -610,7 +610,6 b' def tryimportone(ui, repo, hunk, parents'
     tmpname, message, user, date, branch, nodeid, p1, p2 = \
         patch.extract(ui, hunk)
 
-    editor = getcommiteditor(editform='import.normal', **opts)
     update = not opts.get('bypass')
     strip = opts["strip"]
     sim = float(opts.get('similarity') or 0)
@@ -688,6 +687,8 b' def tryimportone(ui, repo, hunk, parents'
                     m = None
                 else:
                     m = scmutil.matchfiles(repo, files or [])
+                editform = mergeeditform(repo[None], 'import.normal')
+                editor = getcommiteditor(editform=editform, **opts)
                 n = repo.commit(message, opts.get('user') or user,
                                 opts.get('date') or date, match=m,
                                 editor=editor, force=partial)

mercurial/help/config.txt

@@ -406,7 +406,8 b' messages for each actions.'
 - ``changeset.histedit.mess`` for ``mess`` of :hg:`histedit`
 - ``changeset.histedit.pick`` for ``pick`` of :hg:`histedit`
 - ``changeset.import.bypass`` for :hg:`import --bypass`
-- ``changeset.import.normal`` for :hg:`import` without ``--bypass``
+- ``changeset.import.normal.merge`` for :hg:`import` on merges
+- ``changeset.import.normal.normal`` for :hg:`import` on other
 - ``changeset.mq.qnew`` for :hg:`qnew`
 - ``changeset.mq.qfold`` for :hg:`qfold`
 - ``changeset.mq.qrefresh`` for :hg:`qrefresh`

tests/test-import-merge.t

@@ -30,6 +30,7 b' Test import and merge diffs'
   (branch merge, don't forget to commit)
   $ hg ci -m merge
   $ hg export . > ../merge.diff
+  $ grep -v '^merge$' ../merge.diff > ../merge.nomsg.diff
   $ cd ..
   $ hg clone -r2 repo repo2
   adding changesets
@@ -52,8 +53,13 b' Test without --exact and diff.p1 == work'
 
   $ hg up 1
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
-  $ hg import ../merge.diff
-  applying ../merge.diff
+  $ cat > $TESTTMP/editor.sh <<EOF
+  > env | grep HGEDITFORM
+  > echo merge > \$1
+  > EOF
+  $ HGEDITOR="sh $TESTTMP/editor.sh" hg import --edit ../merge.nomsg.diff
+  applying ../merge.nomsg.diff
+  HGEDITFORM=import.normal.merge
   $ tipparents
   1:540395c44225 changea
   3:102a90ea7b4a addb

tests/test-import.t

@@ -90,8 +90,13 b" the commit message, regardless of '--edi"
   added 1 changesets with 2 changes to 2 files
   updating to branch default
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
-  $ HGEDITOR=cat hg --cwd b import ../diffed-tip.patch
+  $ cat > $TESTTMP/editor.sh <<EOF
+  > env | grep HGEDITFORM
+  > cat \$1
+  > EOF
+  $ HGEDITOR="sh $TESTTMP/editor.sh" hg --cwd b import ../diffed-tip.patch
   applying ../diffed-tip.patch
+  HGEDITFORM=import.normal.normal
   
   
   HG: Enter commit message.  Lines beginning with 'HG:' are removed.