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hg: acquire wlock while updating the working directory via updatetotally...
hg: acquire wlock while updating the working directory via updatetotally updatetotally() might be invoked outside wlock scope (e.g. invocation via postincoming() at "hg unbundle" or "hg pull"). In such case, acquisition of wlock is needed for consistent view, because parallel "hg update" and/or "hg bookmarks" might change working directory status while executing updatetotally(). Strictly speaking, truly consistent updating should acquire also store lock, because active bookmark might be moved to another one outside wlock scope (e.g. pulling from other repository causes updating current active one). Acquisition of wlock in this patch ensures consistency in as same level as past "hg update".
Matt Mackall - - Load All Authors

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test-issue1306.t
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Matt Mackall
urls: bulk-change BTS urls to new location
 r26420 https://bz.mercurial-scm.org/1306
Adrian Buehlmann
tests: unify test-issue*
 r12195
Initialize remote repo with branches:
$ hg init remote
$ cd remote
$ echo a > a
$ hg ci -Ama
adding a
$ hg branch br
marked working directory as branch br
Matt Mackall
branch: warn on branching
 r15615 (branches are permanent and global, did you want a bookmark?)
Adrian Buehlmann
tests: unify test-issue*
 r12195 $ hg ci -Amb
$ echo c > c
$ hg ci -Amc
adding c
$ hg log
Peter Arrenbrecht
localrepo: reuse parent manifest in commitctx if no files have changed...
 r14162 changeset: 2:ae3d9c30ec50
Adrian Buehlmann
tests: unify test-issue*
 r12195 branch: br
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: c
Peter Arrenbrecht
localrepo: reuse parent manifest in commitctx if no files have changed...
 r14162 changeset: 1:3f7f930ca414
Adrian Buehlmann
tests: unify test-issue*
 r12195 branch: br
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: b
changeset: 0:cb9a9f314b8b
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: a
$ cd ..
Try cloning -r branch:
$ hg clone -rbr remote local1
adding changesets
adding manifests
adding file changes
added 3 changesets with 2 changes to 2 files
updating to branch br
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg -R local1 parents
Peter Arrenbrecht
localrepo: reuse parent manifest in commitctx if no files have changed...
 r14162 changeset: 2:ae3d9c30ec50
Adrian Buehlmann
tests: unify test-issue*
 r12195 branch: br
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: c
Try cloning -rother clone#branch:
$ hg clone -r0 remote#br local2
adding changesets
adding manifests
adding file changes
added 3 changesets with 2 changes to 2 files
updating to branch default
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg -R local2 parents
changeset: 0:cb9a9f314b8b
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: a
Try cloning -r1 clone#branch:
$ hg clone -r1 remote#br local3
adding changesets
adding manifests
adding file changes
added 3 changesets with 2 changes to 2 files
updating to branch br
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg -R local3 parents
Peter Arrenbrecht
localrepo: reuse parent manifest in commitctx if no files have changed...
 r14162 changeset: 1:3f7f930ca414
Adrian Buehlmann
tests: unify test-issue*
 r12195 branch: br
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: b