cmdutil: look commit template definition up by specified 'editform'

Before this patch, '[committemplate] changeset' definition is shared
between all actions invoking 'commitforceeditor()'.

This prevents template definition from showing action specific
messages: for example, 'hg tag --remove' may need specific
message to call attention, but showing it may be redundant for
other actions.

This patch looks commit template definition up by specified
'editform' introduced by prior patches. 'editform' are
dot-separated list of names, and treated as hierarchical one.

mercurial/cmdutil.py

@@ -2193,9 +2193,15 b' def commitforceeditor(repo, ctx, subs, f'
                       editform=''):
     if not extramsg:
         extramsg = _("Leave message empty to abort commit.")
-    tmpl = repo.ui.config('committemplate', 'changeset', '').strip()
-    if tmpl:
-        committext = buildcommittemplate(repo, ctx, subs, extramsg, tmpl)
+
+    forms = [e for e in editform.split('.') if e]
+    forms.insert(0, 'changeset')
+    while forms:
+        tmpl = repo.ui.config('committemplate', '.'.join(forms))
+        if tmpl:
+            committext = buildcommittemplate(repo, ctx, subs, extramsg, tmpl)
+            break
+        forms.pop()
     else:
         committext = buildcommittext(repo, ctx, subs, extramsg)
 

mercurial/help/config.txt

@@ -388,6 +388,37 b' required):'
 - :hg:`tag`
 - :hg:`transplant`
 
+Configuring items below instead of ``changeset`` allows showing
+customized message only for specific actions, or showing different
+messages for each actions.
+
+- ``changeset.backout`` for :hg:`backout`
+- ``changeset.commit.amend`` for :hg:`commit --amend`
+- ``changeset.commit.normal`` for :hg:`commit` without ``--amend``
+- ``changeset.fetch`` for :hg:`fetch` (impling merge commit)
+- ``changeset.gpg.sign`` for :hg:`sign`
+- ``changeset.graft`` for :hg:`graft`
+- ``changeset.histedit.edit`` for ``edit`` of :hg:`histedit`
+- ``changeset.histedit.fold`` for ``fold`` of :hg:`histedit`
+- ``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.mq.qnew`` for :hg:`qnew`
+- ``changeset.mq.qfold`` for :hg:`qfold`
+- ``changeset.mq.qrefresh`` for :hg:`qrefresh`
+- ``changeset.rebase.collapse`` for :hg:`rebase --collapse`
+- ``changeset.rebase.normal`` for :hg:`rebase` without ``--collapse``
+- ``changeset.shelve.shelve`` for :hg:`shelve`
+- ``changeset.tag.add`` for :hg:`tag` without ``--remove``
+- ``changeset.tag.remove`` for :hg:`tag --remove`
+- ``changeset.transplant`` for :hg:`transplant`
+
+These dot-separated lists of names are treated as hierarchical ones.
+For example, ``changeset.tag.remove`` customizes the commit message
+only for :hg:`tag --remove`, but ``changeset.tag`` customizes the
+commit message for :hg:`tag` regardless of ``--remove`` option.
+
 ``decode/encode``
 -----------------
 

tests/test-commit.t

@@ -359,6 +359,20 b' specific template keywords work well'
 
   $ cat >> .hg/hgrc <<EOF
   > [committemplate]
+  > changeset.commit.normal = HG: this is "commit.normal" template
+  >     HG: {extramsg}
+  >     {if(currentbookmark,
+  >    "HG: bookmark '{currentbookmark}' is activated\n",
+  >    "HG: no bookmark is activated\n")}{subrepos %
+  >    "HG: subrepo '{subrepo}' is changed\n"}
+  > 
+  > changeset.commit = HG: this is "commit" template
+  >     HG: {extramsg}
+  >     {if(currentbookmark,
+  >    "HG: bookmark '{currentbookmark}' is activated\n",
+  >    "HG: no bookmark is activated\n")}{subrepos %
+  >    "HG: subrepo '{subrepo}' is changed\n"}
+  > 
   > changeset = HG: this is customized commit template
   >     HG: {extramsg}
   >     {if(currentbookmark,
@@ -373,7 +387,7 b' specific template keywords work well'
   $ echo 'sub2 = sub2' >> .hgsub
 
   $ HGEDITOR=cat hg commit -S -q
-  HG: this is customized commit template
+  HG: this is "commit.normal" template
   HG: Leave message empty to abort commit.
   HG: bookmark 'currentbookmark' is activated
   HG: subrepo 'sub' is changed
@@ -381,9 +395,28 b' specific template keywords work well'
   abort: empty commit message
   [255]
 
+  $ cat >> .hg/hgrc <<EOF
+  > [committemplate]
+  > changeset.commit.normal =
+  > # now, "changeset.commit" should be chosen for "hg commit"
+  > EOF
+
   $ hg bookmark --inactive currentbookmark
   $ hg forget .hgsub
   $ HGEDITOR=cat hg commit -q
+  HG: this is "commit" template
+  HG: Leave message empty to abort commit.
+  HG: no bookmark is activated
+  abort: empty commit message
+  [255]
+
+  $ cat >> .hg/hgrc <<EOF
+  > [committemplate]
+  > changeset.commit =
+  > # now, "changeset" should be chosen for "hg commit"
+  > EOF
+
+  $ HGEDITOR=cat hg commit -q
   HG: this is customized commit template
   HG: Leave message empty to abort commit.
   HG: no bookmark is activated