largefiles: remove meaningless code path for "hg pull --rebase"

This patch removes "--rebase" specific code path for "hg pull" in
"overridepull", because previous patch makes it meaningless: now,
"rebase.rebase" ("orig" invocation in this patch) can
update/commit largefiles safely without "repo._isrebasing = True".

As a side effect of removing "rebase.rebase" invocation in
"overridepull", this patch removes "nothing to rebase ..." message in
"test-largefiles.t", which is shown only when rebase extension is
enabled AFTER largefiles:

  before this patch:

    1. "dispatch" invokes "pullrebase" of rebase as "hg pull" at
       first, because rebase wraps "hg pull" later

    2. "pullrebase" invokes "overridepull" of largefiles as "orig",
       even though rebase assumes that "orig" is "pull" of commands

    3. "overridepull" executes "pull" and "rebase" directly
      3.1 "pull" pulls changesets and creates new head "X"
      3.2 "rebase" rebases current working parent "Y" on "X"

    4. "overridepull" returns to "pullrebase"

    5. "pullrebase" tries to rebase, but there is nothing to be done,
       because "Y" is already rebased on "X". then, it shows "nothing
       to rebase ..."

  after this patch:

    1. "dispatch" invokes "pullrebase" of rebase as "hg pull"

    2. "pullrebase" invokes "overridepull" of largefiles as "orig"

    3. "overridepull" executes "pull" as "orig"

    4. "overridepull" returns to "pullrebase"

    5. revision "Y" is not yet rebased, so "pullrebase" doesn't shows
       "nothing to rebase ..."

As another side effect of removing "rebase.rebase" invocation, this
patch fixes issue3861, which occurs only when rebase extension is
enabled BEFORE largefiles:

  before this patch:

    1. "dispatch" invokes "overridepull" of largefiles at first,
       because largefiles wrap "hg pull" later

    2. "overridepull" executes "pull" and "rebase" explicitly
      2.1 "pull" pulls changesets and creates new head "X"
      2.2 "rebase" rebases current working parent, but fails because
          no revision is checked out in issue3861 case

    3. "overridepull" returns to "dispatch" with exit code 1 returned
       from "rebase" at (2.2)

    4. "hg pull" terminates with exit code 1 unexpectedly

  after this patch:

    1. "dispatch" invokes "overridepull" of largefiles at first

    2. "overridepull" invokes "pullrebase" of rebase as "orig"

    3. "pullrebase" invokes "pull" as "orig"

    4. "pullrebase" invokes "rebase", and it fails

    5. "pullrebase" returns to "overridepull" with exit code 0
       (because "pullrebase" ignores result of "pull" and "rebase")

    6. "overridepull" returns to "dispatch" with exit code 0 returned
       from "rebase" at (5)

    7. "hg pull" terminates with exit code 0

hgext/largefiles/overrides.py

@@ -11,11 +11,10 b''
 import os
 import copy
 
-from mercurial import hg, commands, util, cmdutil, scmutil, match as match_, \
+from mercurial import hg, util, cmdutil, scmutil, match as match_, \
         archival, pathutil, revset
 from mercurial.i18n import _
 from mercurial.node import hex
-from hgext import rebase
 
 import lfutil
 import lfcommands
@@ -710,37 +709,14 b' def overriderevert(orig, ui, repo, *pats'
     finally:
         wlock.release()
 
-# When we rebase a repository with remotely changed largefiles, we need to
-# take some extra care so that the largefiles are correctly updated in the
-# working copy
+# after pulling changesets, we need to take some extra care to get
+# largefiles updated remotely
 def overridepull(orig, ui, repo, source=None, **opts):
     revsprepull = len(repo)
     if not source:
         source = 'default'
     repo.lfpullsource = source
-    if opts.get('rebase', False):
-        repo._isrebasing = True
-        try:
-            if opts.get('update'):
-                del opts['update']
-                ui.debug('--update and --rebase are not compatible, ignoring '
-                         'the update flag\n')
-            del opts['rebase']
-            origpostincoming = commands.postincoming
-            def _dummy(*args, **kwargs):
-                pass
-            commands.postincoming = _dummy
-            try:
-                result = commands.pull(ui, repo, source, **opts)
-            finally:
-                commands.postincoming = origpostincoming
-            revspostpull = len(repo)
-            if revspostpull > revsprepull:
-                result = result or rebase.rebase(ui, repo)
-        finally:
-            repo._isrebasing = False
-    else:
-        result = orig(ui, repo, source, **opts)
+    result = orig(ui, repo, source, **opts)
     revspostpull = len(repo)
     lfrevs = opts.get('lfrev', [])
     if opts.get('all_largefiles'):

tests/test-largefiles-misc.t

@@ -832,4 +832,33 b' locally (issue4109)'
   $ cd ..
 
 
+Test "pull --rebase" when rebase is enabled before largefiles (issue3861)
+=========================================================================
 
+  $ hg showconfig extensions | grep largefiles
+  extensions.largefiles=!
+
+  $ mkdir issue3861
+  $ cd issue3861
+  $ hg init src
+  $ hg clone -q src dst
+  $ echo a > src/a
+  $ hg -R src commit -Aqm "#0"
+  Invoking status precommit hook
+  A a
+
+  $ cat >> dst/.hg/hgrc <<EOF
+  > [extensions]
+  > largefiles=
+  > EOF
+  $ hg -R dst pull --rebase
+  pulling from $TESTTMP/issue3861/src (glob)
+  requesting all changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files
+  nothing to rebase - working directory parent is already an ancestor of destination bf5e395ced2c
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+
+  $ cd ..

tests/test-largefiles.t

@@ -1172,12 +1172,11 b' rebased or not.'
   adding manifests
   adding file changes
   added 1 changesets with 2 changes to 2 files (+1 heads)
+  0 largefiles cached
   Invoking status precommit hook
   M sub/normal4
   M sub2/large6
   saved backup bundle to $TESTTMP/d/.hg/strip-backup/f574fb32bb45-backup.hg (glob)
-  0 largefiles cached
-  nothing to rebase - working directory parent is also destination
   $ [ -f .hg/largefiles/e166e74c7303192238d60af5a9c4ce9bef0b7928 ]
   $ hg log --template '{rev}:{node|short}  {desc|firstline}\n'
   9:598410d3eb9a  modify normal file largefile in repo d