backout: add --tool argument for specifying merge tool stable

backout: add --tool argument for specifying merge tool

--- a/mercurial/commands.py	Fri Oct 22 17:08:15 2010 +0200
+++ b/mercurial/commands.py	Fri Oct 22 11:58:43 2010 -0500
@@ -278,7 +278,11 @@
     revert_opts['no_backup'] = None
     revert(ui, repo, **revert_opts)
     if not opts.get('merge') and op1 != node:
-        return hg.update(repo, op1)
+        try:
+            ui.setconfig('ui', 'forcemerge', opts.get('tool', ''))
+            return hg.update(repo, op1)
+        finally:
+            ui.setconfig('ui', 'forcemerge', '')
 
     commit_opts = opts.copy()
     commit_opts['addremove'] = False
@@ -295,7 +299,11 @@
         hg.clean(repo, op1, show_stats=False)
         ui.status(_('merging with changeset %s\n')
                   % nice(repo.changelog.tip()))
-        return hg.merge(repo, hex(repo.changelog.tip()))
+        try:
+            ui.setconfig('ui', 'forcemerge', opts.get('tool', ''))
+            return hg.merge(repo, hex(repo.changelog.tip()))
+        finally:
+            ui.setconfig('ui', 'forcemerge', '')
     return 0
 
 def bisect(ui, repo, rev=None, extra=None, command=None,
@@ -4005,6 +4013,8 @@
            _('merge with old dirstate parent after backout')),
           ('', 'parent', '',
            _('parent to choose when backing out merge'), _('REV')),
+          ('t', 'tool', '',
+           _('specify merge tool')),
           ('r', 'rev', '',
            _('revision to backout'), _('REV')),
          ] + walkopts + commitopts + commitopts2,

--- a/tests/test-backout.t	Fri Oct 22 17:08:15 2010 +0200
+++ b/tests/test-backout.t	Fri Oct 22 11:58:43 2010 -0500
@@ -1,5 +1,3 @@
-  $ HGMERGE=true; export HGMERGE
-
   $ hg init basic
   $ cd basic
 
@@ -20,7 +18,7 @@
   $ echo b >> a
   $ hg commit -d '1 0' -m b
 
-  $ hg backout -d '2 0' tip
+  $ hg backout -d '2 0' tip --tool=true
   reverting a
   changeset 2:2929462c3dff backs out changeset 1:a820f4f40a57
   $ cat a
@@ -39,7 +37,7 @@
   $ hg rm a
   $ hg commit -d '1 0' -m b
 
-  $ hg backout -d '2 0' tip
+  $ hg backout -d '2 0' tip --tool=true
   adding a
   changeset 2:de31bdc76c0d backs out changeset 1:76862dcce372
   $ cat a
@@ -47,7 +45,7 @@
 
 backout of backout is as if nothing happened
 
-  $ hg backout -d '3 0' --merge tip
+  $ hg backout -d '3 0' --merge tip --tool=true
   removing a
   changeset 3:7f6d0f120113 backs out changeset 2:de31bdc76c0d
   $ cat a 2>/dev/null || echo cat: a: No such file or directory
@@ -102,7 +100,7 @@
   $ echo line 3 >> a
   $ hg commit -d '2 0' -m c
 
-  $ hg backout --merge -d '3 0' 1
+  $ hg backout --merge -d '3 0' 1 --tool=true
   reverting a
   created new head
   changeset 3:26b8ccb9ad91 backs out changeset 1:5a50a024c182
@@ -133,7 +131,7 @@
   adding b
 
 without --merge
-  $ hg backout -d '3 0' 1
+  $ hg backout -d '3 0' 1 --tool=true
   reverting a
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg locate b
@@ -144,7 +142,7 @@
   b
 
 with --merge
-  $ hg backout --merge -d '3 0' 1
+  $ hg backout --merge -d '3 0' 1 --tool=true
   reverting a
   created new head
   changeset 3:3202beb76721 backs out changeset 1:22bca4c721e5
@@ -201,7 +199,7 @@
 
 backout with valid parent should be ok
 
-  $ hg backout -d '5 0' --parent 2 4
+  $ hg backout -d '5 0' --parent 2 4 --tool=true
   removing d
   changeset 5:10e5328c8435 backs out changeset 4:b2f3bb92043e
 
@@ -210,7 +208,7 @@
   $ hg update -C
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
-  $ hg backout -d '6 0' --parent 3 4
+  $ hg backout -d '6 0' --parent 3 4 --tool=true
   removing c
   changeset 5:033590168430 backs out changeset 4:b2f3bb92043e
 
@@ -236,7 +234,7 @@
   adding file2
 
 without --merge
-  $ hg backout -r 1
+  $ hg backout -r 1 --tool=true
   removing file1
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg branch
@@ -248,7 +246,7 @@
 
 with --merge
   $ hg update -qC
-  $ hg backout --merge -d '3 0' -r 1 -m 'backout on branch1'
+  $ hg backout --merge -d '3 0' -r 1 -m 'backout on branch1' --tool=true
   removing file1
   created new head
   changeset 3:d4e8f6db59fb backs out changeset 1:bf1602f437f3

--- a/tests/test-debugcomplete.t	Fri Oct 22 17:08:15 2010 +0200
+++ b/tests/test-debugcomplete.t	Fri Oct 22 11:58:43 2010 -0500
@@ -196,7 +196,7 @@
   update: clean, check, date, rev
   addremove: similarity, include, exclude, dry-run
   archive: no-decode, prefix, rev, type, subrepos, include, exclude
-  backout: merge, parent, rev, include, exclude, message, logfile, date, user
+  backout: merge, parent, tool, rev, include, exclude, message, logfile, date, user
   bisect: reset, good, bad, skip, command, noupdate
   branch: force, clean
   branches: active, closed