[PATCH remotenames] pull: fix pull --rebase with a --tool argument

[Adam Simpkins]

# HG changeset patch
# User Adam Simpkins <simpkins at fb.com>
# Date 1496173480 25200
#      Tue May 30 12:44:40 2017 -0700
# Node ID 3988f1c49f0d86d6e0c8a7bbfaf738d70fddf916
# Parent  78c8966c02759755235a6566e0c557b82ff9cb0a
pull: fix pull --rebase with a --tool argument

The code previously stripped off the --rebase argument when invoking the
original pull() command code, but did not strip off --tool, causing the command
to incorrectly fail.

This fixes the code to also strip off --tool when invoking pull, and then pass
this argument in when doing the rebase.

However, the way the rebase code invokes merge does seem to result in rather
confusing behavior: the "internal:other" tool preserves the local changes,
while "internal:local" preserves the changes pulled from the remote.

diff --git a/remotenames.py b/remotenames.py
--- a/remotenames.py
+++ b/remotenames.py
@@ -880,8 +880,9 @@
     if dest:
         # Let `pull` do its thing without `rebase.py->pullrebase()`
         del opts['rebase']
+        tool = opts.pop('tool', '')
         ret = orig(ui, repo, source, **opts)
-        return ret or rebasemodule.rebase(ui, repo, dest=dest)
+        return ret or rebasemodule.rebase(ui, repo, dest=dest, tool=tool)
     else:
         return orig(ui, repo, source, **opts)
 
diff --git a/tests/test-pull-rebase.t b/tests/test-pull-rebase.t
--- a/tests/test-pull-rebase.t
+++ b/tests/test-pull-rebase.t
@@ -151,3 +151,62 @@
   $ hg -q pull
   $ hg log -l 1 --template="{desc} {remotenames}\n"
   between_pull default/bookmarkonremote default/default
+
+Test pull with --rebase and --tool
+  $ cd ../remoterepo
+  $ hg up bookmarkonremote -q
+  $ echo remotechanges > editedbyboth
+  $ hg add editedbyboth
+  $ mkcommit remotecommit
+  $ cd ../localrepo
+  $ hg book -t default/bookmarkonremote -r default/bookmarkonremote tracking2
+  $ hg update tracking2 -q
+  $ echo localchanges > editedbyboth
+  $ hg add editedbyboth
+  $ mkcommit somelocalchanges
+  $ printdag
+  @  somelocalchanges | tracking2 |
+  |
+  o  between_pull |  | default/bookmarkonremote
+  |
+  o  foo |  |
+  |
+  | o  localcommit | bmnottracking tracking |
+  | |
+  | o  untrackedremotecommit |  |
+  | |
+  o |  trackedremotecommit |  |
+  |/
+  o  root |  |
+  
+  $ hg pull --rebase --tool internal:union
+  pulling from $TESTTMP/remoterepo
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 2 changes to 2 files (+1 heads)
+  (run 'hg heads .' to see heads, 'hg merge' to merge)
+  rebasing 6:1d01e32a0efb "somelocalchanges" (tracking2)
+  merging editedbyboth
+  saved backup bundle to $TESTTMP/localrepo/.hg/strip-backup/*-backup.hg (glob)
+  $ printdag
+  @  somelocalchanges | tracking2 |
+  |
+  o  remotecommit |  | default/bookmarkonremote
+  |
+  o  between_pull |  |
+  |
+  o  foo |  |
+  |
+  | o  localcommit | bmnottracking tracking |
+  | |
+  | o  untrackedremotecommit |  |
+  | |
+  o |  trackedremotecommit |  |
+  |/
+  o  root |  |
+  
+  $ cat editedbyboth
+  remotechanges
+  localchanges