rebase: add --tool argument for specifying merge tool

hgext/rebase.py

@@ -114,6 +114,8 def rebase(ui, repo, **opts):
             if srcf or basef or destf:
                 raise util.Abort(
                     _('abort and continue do not allow specifying revisions'))
+            if opts.get('tool', False):
+                ui.warn(_('tool option will be ignored\n'))
 
             (originalwd, target, state, skipped, collapsef, keepf,
                                 keepbranchesf, external) = restorestatus(repo)
@@ -167,10 +169,14 def rebase(ui, repo, **opts):
                 if len(repo.parents()) == 2:
                     repo.ui.debug('resuming interrupted rebase\n')
                 else:
+                    try:
+                        ui.setconfig('ui', 'forcemerge', opts.get('tool', ''))
                     stats = rebasenode(repo, rev, p1, p2, state)
                     if stats and stats[3] > 0:
                         raise util.Abort(_('unresolved conflicts (see hg '
                                     'resolve, then hg rebase --continue)'))
+                    finally:
+                        ui.setconfig('ui', 'forcemerge', '')
                 updatedirstate(repo, rev, target, p2)
                 if not collapsef:
                     newrev = concludenode(repo, rev, p1, p2, extrafn=extrafn)
@@ -592,6 +598,7 cmdtable = {
         ('', 'keepbranches', False, _('keep original branch names')),
         ('', 'detach', False, _('force detaching of source from its original '
                                 'branch')),
+        ('t', 'tool', '', _('specify merge tool')),
         ('c', 'continue', False, _('continue an interrupted rebase')),
         ('a', 'abort', False, _('abort an interrupted rebase'))] +
          templateopts,

tests/test-rebase-parameters.t

@@ -330,3 +330,63 Specify base and dest (from 3 onto 6):
   
   $ cd ..
 
+Test --tool parameter:
+
+  $ hg init b
+  $ cd b
+
+  $ echo c1 > c1
+  $ hg ci -Am c1
+  adding c1
+
+  $ echo c2 > c2
+  $ hg ci -Am c2
+  adding c2
+
+  $ hg up -q 0
+  $ echo c2b > c2
+  $ hg ci -Am c2b
+  adding c2
+  created new head
+
+  $ cd ..
+
+  $ hg clone -q -u . b b1
+  $ cd b1
+
+  $ hg rebase -s 2 -d 1 --tool internal:local
+  saved backup bundle to $TESTTMP/b1/.hg/strip-backup/*-backup.hg (glob)
+
+  $ hg cat c2
+  c2
+
+  $ cd ..
+
+
+  $ hg clone -q -u . b b2
+  $ cd b2
+
+  $ hg rebase -s 2 -d 1 --tool internal:other
+  saved backup bundle to $TESTTMP/b2/.hg/strip-backup/*-backup.hg (glob)
+
+  $ hg cat c2
+  c2b
+
+  $ cd ..
+
+
+  $ hg clone -q -u . b b3
+  $ cd b3
+
+  $ hg rebase -s 2 -d 1 --tool internal:fail
+  abort: unresolved conflicts (see hg resolve, then hg rebase --continue)
+  [255]
+
+  $ hg resolve -l
+  U c2
+
+  $ hg resolve -m c2
+  $ hg rebase -c --tool internal:fail
+  tool option will be ignored
+  saved backup bundle to $TESTTMP/b3/.hg/strip-backup/*-backup.hg (glob)
+