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largefiles: for update -C, only update largefiles when necessary...
largefiles: for update -C, only update largefiles when necessary Before, a --clean update with largefiles would use the "optimization" that it didn't read hashes from standin files before and after the update. Instead of trusting the content of the standin files, it would rehash all the actual largefiles that lfdirstate reported clean and update the standins that didn't have the expected content. It could thus in some "impossible" situations automatically recover from some "largefile got out sync with its standin" issues (even there apparently still were weird corner cases where it could fail). This extra checking is similar to what core --clean intentionally do not do, and it made update --clean unbearable slow. Usually in core Mercurial, --clean will rely on the dirstate to find the files it should update. (It is thus intentionally possible (when trying to trick the system or if there should be bugs) to end up in situations where --clean not will restore the working directory content correctly.) Checking every file when we "know" it is ok is however not an option - that would be too slow. Instead, trust the content of the standin files. Use the same logic for --clean as for linear updates and trust the dirstate and that our "logic" will keep them in sync. It is much cheaper to just rehash the largefiles reported dirty by a status walk and read all standins than to hash largefiles. Most of the changes are just a change of indentation now when the different kinds of updates no longer are handled that differently. Standins for added files are however only written when doing a normal update, while deleted and removed files only will be updated for --clean updates.
Matt Mackall - - Load All Authors

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test-strip.t
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Pierre-Yves David
strip: rename test-mq-strip into test-strip...
 r19827 $ echo "[extensions]" >> $HGRCPATH
$ echo "strip=" >> $HGRCPATH
$ restore() {
> hg unbundle -q .hg/strip-backup/*
> rm .hg/strip-backup/*
> }
$ teststrip() {
> hg up -C $1
> echo % before update $1, strip $2
> hg parents
> hg --traceback strip $2
> echo % after update $1, strip $2
> hg parents
> restore
> }
$ hg init test
$ cd test
$ echo foo > bar
$ hg ci -Ama
adding bar
$ echo more >> bar
$ hg ci -Amb
$ echo blah >> bar
$ hg ci -Amc
$ hg up 1
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo blah >> bar
$ hg ci -Amd
created new head
$ echo final >> bar
$ hg ci -Ame
$ hg log
changeset: 4:443431ffac4f
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: e
changeset: 3:65bd5f99a4a3
parent: 1:ef3a871183d7
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: d
changeset: 2:264128213d29
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: c
changeset: 1:ef3a871183d7
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: b
changeset: 0:9ab35a2d17cb
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: a
$ teststrip 4 4
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
% before update 4, strip 4
changeset: 4:443431ffac4f
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: e
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
saved backup bundle to $TESTTMP/test/.hg/strip-backup/*-backup.hg (glob)
% after update 4, strip 4
changeset: 3:65bd5f99a4a3
tag: tip
parent: 1:ef3a871183d7
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: d
$ teststrip 4 3
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
% before update 4, strip 3
changeset: 4:443431ffac4f
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: e
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
saved backup bundle to $TESTTMP/test/.hg/strip-backup/*-backup.hg (glob)
% after update 4, strip 3
changeset: 1:ef3a871183d7
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: b
$ teststrip 1 4
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
% before update 1, strip 4
changeset: 1:ef3a871183d7
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: b
saved backup bundle to $TESTTMP/test/.hg/strip-backup/*-backup.hg (glob)
% after update 1, strip 4
changeset: 1:ef3a871183d7
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: b
$ teststrip 4 2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
% before update 4, strip 2
changeset: 4:443431ffac4f
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: e
saved backup bundle to $TESTTMP/test/.hg/strip-backup/*-backup.hg (glob)
% after update 4, strip 2
changeset: 3:443431ffac4f
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: e
$ teststrip 4 1
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
% before update 4, strip 1
changeset: 4:264128213d29
tag: tip
parent: 1:ef3a871183d7
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: c
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
saved backup bundle to $TESTTMP/test/.hg/strip-backup/*-backup.hg (glob)
% after update 4, strip 1
changeset: 0:9ab35a2d17cb
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: a
$ teststrip null 4
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
% before update null, strip 4
saved backup bundle to $TESTTMP/test/.hg/strip-backup/*-backup.hg (glob)
% after update null, strip 4
$ hg log
changeset: 4:264128213d29
tag: tip
parent: 1:ef3a871183d7
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: c
changeset: 3:443431ffac4f
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: e
changeset: 2:65bd5f99a4a3
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: d
changeset: 1:ef3a871183d7
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: b
changeset: 0:9ab35a2d17cb
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: a
Eric Sumner
repair: add experimental option to write bundle2 files...
 r23898 $ hg up -C 4
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg parents
changeset: 4:264128213d29
tag: tip
parent: 1:ef3a871183d7
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: c
Eric Sumner
repair._bundle: fix traceback for bad config value...
 r23939 $ hg --config experimental.bundle2-exp=True --config experimental.strip-bundle2-version=INVALID strip 4
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
unknown strip-bundle2-version value 'INVALID'; should be one of ['01', '02']
saved backup bundle to $TESTTMP/test/.hg/strip-backup/264128213d29-0b39d6bf-backup.hg (glob)
$ hg debugbundle .hg/strip-backup/*
264128213d290d868c54642d13aeaa3675551a78
$ restore
$ hg up -C 4
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
Eric Sumner
repair: add experimental option to write bundle2 files...
 r23898 $ hg --config experimental.bundle2-exp=True --config experimental.strip-bundle2-version=02 --traceback strip 4
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
saved backup bundle to $TESTTMP/test/.hg/strip-backup/264128213d29-0b39d6bf-backup.hg (glob)
$ hg parents
changeset: 1:ef3a871183d7
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: b
$ hg debugbundle .hg/strip-backup/*
Stream params: {}
Pierre-Yves David
bundle2: rename format, parts and config to final names...
 r24686 changegroup -- "{'version': '02'}"
Eric Sumner
repair: add experimental option to write bundle2 files...
 r23898 264128213d290d868c54642d13aeaa3675551a78
Eric Sumner
bundlerepo: basic bundle2 support...
 r24073 $ hg incoming .hg/strip-backup/*
comparing with .hg/strip-backup/264128213d29-0b39d6bf-backup.hg
searching for changes
changeset: 4:264128213d29
tag: tip
parent: 1:ef3a871183d7
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: c
Eric Sumner
repair: add experimental option to write bundle2 files...
 r23898 $ restore
Eric Sumner
bundlerepo: basic bundle2 support...
 r24073 $ hg up -C 4
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg --config experimental.bundle2-exp=True --config experimental.strip-bundle2-version=02 --traceback strip 4
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
saved backup bundle to $TESTTMP/test/.hg/strip-backup/264128213d29-0b39d6bf-backup.hg (glob)
$ hg parents
changeset: 1:ef3a871183d7
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: b
$ hg debugbundle .hg/strip-backup/*
Stream params: {}
Pierre-Yves David
bundle2: rename format, parts and config to final names...
 r24686 changegroup -- "{'version': '02'}"
Eric Sumner
bundlerepo: basic bundle2 support...
 r24073 264128213d290d868c54642d13aeaa3675551a78
$ hg pull .hg/strip-backup/*
pulling from .hg/strip-backup/264128213d29-0b39d6bf-backup.hg
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 0 changes to 0 files (+1 heads)
(run 'hg heads' to see heads, 'hg merge' to merge)
$ rm .hg/strip-backup/*
$ hg log --graph
o changeset: 4:264128213d29
| tag: tip
| parent: 1:ef3a871183d7
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: c
|
| o changeset: 3:443431ffac4f
| | user: test
| | date: Thu Jan 01 00:00:00 1970 +0000
| | summary: e
| |
| o changeset: 2:65bd5f99a4a3
|/ user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: d
|
@ changeset: 1:ef3a871183d7
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: b
|
o changeset: 0:9ab35a2d17cb
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: a
Pierre-Yves David
strip: rename test-mq-strip into test-strip...
 r19827 $ hg up -C 2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg merge 4
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
before strip of merge parent
$ hg parents
changeset: 2:65bd5f99a4a3
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: d
changeset: 4:264128213d29
tag: tip
parent: 1:ef3a871183d7
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: c
$ hg strip 4
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
saved backup bundle to $TESTTMP/test/.hg/strip-backup/*-backup.hg (glob)
after strip of merge parent
$ hg parents
changeset: 1:ef3a871183d7
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: b
$ restore
$ hg up
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
Martin Geisler
tests: don't load unnecessary graphlog extension...
 r20117 $ hg log -G
Pierre-Yves David
strip: rename test-mq-strip into test-strip...
 r19827 @ changeset: 4:264128213d29
| tag: tip
| parent: 1:ef3a871183d7
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: c
|
| o changeset: 3:443431ffac4f
| | user: test
| | date: Thu Jan 01 00:00:00 1970 +0000
| | summary: e
| |
| o changeset: 2:65bd5f99a4a3
|/ user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: d
|
o changeset: 1:ef3a871183d7
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: b
|
o changeset: 0:9ab35a2d17cb
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: a
2 is parent of 3, only one strip should happen
$ hg strip "roots(2)" 3
saved backup bundle to $TESTTMP/test/.hg/strip-backup/*-backup.hg (glob)
Martin Geisler
tests: don't load unnecessary graphlog extension...
 r20117 $ hg log -G
Pierre-Yves David
strip: rename test-mq-strip into test-strip...
 r19827 @ changeset: 2:264128213d29
| tag: tip
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: c
|
o changeset: 1:ef3a871183d7
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: b
|
o changeset: 0:9ab35a2d17cb
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: a
$ restore
Martin Geisler
tests: don't load unnecessary graphlog extension...
 r20117 $ hg log -G
Pierre-Yves David
strip: rename test-mq-strip into test-strip...
 r19827 o changeset: 4:443431ffac4f
| tag: tip
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: e
|
o changeset: 3:65bd5f99a4a3
| parent: 1:ef3a871183d7
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: d
|
| @ changeset: 2:264128213d29
|/ user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: c
|
o changeset: 1:ef3a871183d7
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: b
|
o changeset: 0:9ab35a2d17cb
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: a
2 different branches: 2 strips
$ hg strip 2 4
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
saved backup bundle to $TESTTMP/test/.hg/strip-backup/*-backup.hg (glob)
Martin Geisler
tests: don't load unnecessary graphlog extension...
 r20117 $ hg log -G
Pierre-Yves David
strip: rename test-mq-strip into test-strip...
 r19827 o changeset: 2:65bd5f99a4a3
| tag: tip
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: d
|
@ changeset: 1:ef3a871183d7
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: b
|
o changeset: 0:9ab35a2d17cb
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: a
$ restore
2 different branches and a common ancestor: 1 strip
$ hg strip 1 "2|4"
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
saved backup bundle to $TESTTMP/test/.hg/strip-backup/*-backup.hg (glob)
$ restore
Durham Goode
fncache: clean up fncache during strips...
 r20885 verify fncache is kept up-to-date
$ touch a
$ hg ci -qAm a
$ cat .hg/store/fncache | sort
data/a.i
data/bar.i
$ hg strip tip
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
saved backup bundle to $TESTTMP/test/.hg/strip-backup/*-backup.hg (glob)
$ cat .hg/store/fncache
data/bar.i
Pierre-Yves David
strip: rename test-mq-strip into test-strip...
 r19827 stripping an empty revset
$ hg strip "1 and not 1"
abort: empty revision set
[255]
remove branchy history for qimport tests
$ hg strip 3
saved backup bundle to $TESTTMP/test/.hg/strip-backup/*-backup.hg (glob)
strip of applied mq should cleanup status file
$ echo "mq=" >> $HGRCPATH
$ hg up -C 3
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo fooagain >> bar
$ hg ci -mf
$ hg qimport -r tip:2
applied patches before strip
$ hg qapplied
2.diff
3.diff
4.diff
stripping revision in queue
$ hg strip 3
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
saved backup bundle to $TESTTMP/test/.hg/strip-backup/*-backup.hg (glob)
applied patches after stripping rev in queue
$ hg qapplied
2.diff
stripping ancestor of queue
$ hg strip 1
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
saved backup bundle to $TESTTMP/test/.hg/strip-backup/*-backup.hg (glob)
applied patches after stripping ancestor of queue
$ hg qapplied
Mads Kiilerich
spelling: random spell checker fixes
 r19951 Verify strip protects against stripping wc parent when there are uncommitted mods
Pierre-Yves David
strip: rename test-mq-strip into test-strip...
 r19827
$ echo b > b
Matt Mackall
strip: properly clear resolve state with --keep (issue4593)...
 r24709 $ echo bb > bar
Pierre-Yves David
strip: rename test-mq-strip into test-strip...
 r19827 $ hg add b
$ hg ci -m 'b'
$ hg log --graph
Matt Mackall
strip: properly clear resolve state with --keep (issue4593)...
 r24709 @ changeset: 1:76dcf9fab855
Pierre-Yves David
strip: rename test-mq-strip into test-strip...
 r19827 | tag: tip
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: b
|
o changeset: 0:9ab35a2d17cb
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: a
Matt Mackall
strip: properly clear resolve state with --keep (issue4593)...
 r24709 $ hg up 0
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ echo c > bar
$ hg up -t false
merging bar
merging bar failed!
1 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges
[1]
$ hg sum
parent: 1:76dcf9fab855 tip
b
branch: default
commit: 1 modified, 1 unknown, 1 unresolved
update: (current)
mq: 3 unapplied
Pierre-Yves David
strip: rename test-mq-strip into test-strip...
 r19827
$ echo c > b
$ hg strip tip
abort: local changes found
[255]
$ hg strip tip --keep
saved backup bundle to $TESTTMP/test/.hg/strip-backup/*-backup.hg (glob)
$ hg log --graph
@ changeset: 0:9ab35a2d17cb
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: a
$ hg status
M bar
? b
Matt Mackall
strip: properly clear resolve state with --keep (issue4593)...
 r24709 ? bar.orig
$ rm bar.orig
$ hg sum
parent: 0:9ab35a2d17cb tip
a
branch: default
commit: 1 modified, 1 unknown
update: (current)
mq: 3 unapplied
Pierre-Yves David
strip: rename test-mq-strip into test-strip...
 r19827
Strip adds, removes, modifies with --keep
$ touch b
$ hg add b
$ hg commit -mb
$ touch c
... with a clean working dir
$ hg add c
$ hg rm bar
$ hg commit -mc
$ hg status
$ hg strip --keep tip
saved backup bundle to $TESTTMP/test/.hg/strip-backup/*-backup.hg (glob)
$ hg status
! bar
? c
... with a dirty working dir
$ hg add c
$ hg rm bar
$ hg commit -mc
$ hg status
$ echo b > b
$ echo d > d
$ hg strip --keep tip
Durham Goode
bundles: do not overwrite existing backup bundles (BC)...
 r23835 saved backup bundle to $TESTTMP/test/.hg/strip-backup/57e364c8a475-4cfed93c-backup.hg (glob)
Pierre-Yves David
strip: rename test-mq-strip into test-strip...
 r19827 $ hg status
M b
! bar
? c
? d
$ cd ..
stripping many nodes on a complex graph (issue3299)
$ hg init issue3299
$ cd issue3299
$ hg debugbuilddag '@a.:a@b.:b.:x<a@a.:a<b@b.:b<a@a.:a'
$ hg strip 'not ancestors(x)'
saved backup bundle to $TESTTMP/issue3299/.hg/strip-backup/*-backup.hg (glob)
test hg strip -B bookmark
$ cd ..
$ hg init bookmarks
$ cd bookmarks
$ hg debugbuilddag '..<2.*1/2:m<2+3:c<m+3:a<2.:b'
$ hg bookmark -r 'a' 'todelete'
$ hg bookmark -r 'b' 'B'
$ hg bookmark -r 'b' 'nostrip'
$ hg bookmark -r 'c' 'delete'
$ hg up -C todelete
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
Stephen Lee
update: show message when a bookmark is activated by update...
 r21503 (activating bookmark todelete)
Pierre-Yves David
strip: rename test-mq-strip into test-strip...
 r19827 $ hg strip -B nostrip
bookmark 'nostrip' deleted
abort: empty revision set
[255]
$ hg strip -B todelete
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
saved backup bundle to $TESTTMP/bookmarks/.hg/strip-backup/*-backup.hg (glob)
David Soria Parra
strip: remove bookmarks after strip succeed (issue4295)...
 r21847 bookmark 'todelete' deleted
Pierre-Yves David
strip: rename test-mq-strip into test-strip...
 r19827 $ hg id -ir dcbb326fdec2
abort: unknown revision 'dcbb326fdec2'!
[255]
$ hg id -ir d62d843c9a01
d62d843c9a01
$ hg bookmarks
B 9:ff43616e5d0f
delete 6:2702dd0c91e7
$ hg strip -B delete
David Soria Parra
strip: remove bookmarks after strip succeed (issue4295)...
 r21847 saved backup bundle to $TESTTMP/bookmarks/.hg/strip-backup/*-backup.hg (glob)
Pierre-Yves David
strip: rename test-mq-strip into test-strip...
 r19827 bookmark 'delete' deleted
$ hg id -ir 6:2702dd0c91e7
abort: unknown revision '2702dd0c91e7'!
[255]
David Soria Parra
strip: remove bookmarks after strip succeed (issue4295)...
 r21847 $ hg update B
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
(activating bookmark B)
$ echo a > a
$ hg add a
$ hg strip -B B
abort: local changes found
[255]
$ hg bookmarks
* B 6:ff43616e5d0f
Pierre-Yves David
strip: rename test-mq-strip into test-strip...
 r19827
Matt Mackall
strip: drop -b/--backup option (BC)...
 r21854 Make sure no one adds back a -b option:
$ hg strip -b tip
hg strip: option -b not recognized
hg strip [-k] [-f] [-n] [-B bookmark] [-r] REV...
strip changesets and all their descendants from the repository
Matt Mackall
help: normalize extension shadow hint
 r22112 (use "hg help -e strip" to show help for the strip extension)
Matt Mackall
strip: drop -b/--backup option (BC)...
 r21854
Matt Mackall
help: fold repeatable option message into option table header...
 r22117 options ([+] can be repeated):
Matt Mackall
strip: drop -b/--backup option (BC)...
 r21854
-r --rev REV [+] strip specified revision (optional, can specify revisions
without this option)
-f --force force removal of changesets, discard uncommitted changes
(no backup)
--no-backup no backups
Yuya Nishihara
commands: replace "working copy" with "working directory" in help/messages...
 r24364 -k --keep do not modify working directory during strip
Matt Mackall
strip: drop -b/--backup option (BC)...
 r21854 -B --bookmark VALUE remove revs only reachable from given bookmark
--mq operate on patch repository
Matt Mackall
help: improve command summary hint...
 r22111 (use "hg strip -h" to show more help)
Matt Mackall
strip: drop -b/--backup option (BC)...
 r21854 [255]
Durham Goode
bundles: do not overwrite existing backup bundles (BC)...
 r23835
$ cd ..
Verify bundles don't get overwritten:
$ hg init doublebundle
$ cd doublebundle
$ touch a
$ hg commit -Aqm a
$ touch b
$ hg commit -Aqm b
$ hg strip -r 0
0 files updated, 0 files merged, 2 files removed, 0 files unresolved
saved backup bundle to $TESTTMP/doublebundle/.hg/strip-backup/3903775176ed-e68910bd-backup.hg (glob)
$ ls .hg/strip-backup
3903775176ed-e68910bd-backup.hg
$ hg pull -q -r 3903775176ed .hg/strip-backup/3903775176ed-e68910bd-backup.hg
$ hg strip -r 0
saved backup bundle to $TESTTMP/doublebundle/.hg/strip-backup/3903775176ed-54390173-backup.hg (glob)
$ ls .hg/strip-backup
3903775176ed-54390173-backup.hg
3903775176ed-e68910bd-backup.hg