mirror of
https://github.com/facebook/sapling.git
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a52d7e5744
The generation of cache files like tags.cache and branchheads.cache is not an actual reflection of things changing in the whole of the .hg directory (like eg a commit or a rebase or something) but instead these cache files are just part of bookkeeping. As such its convienant to allow various clients to ignore file events to do with these cache files which would otherwise cause a double refresh. Eg one refresh might occur after a commit, but the act of refreshing after the commit would cause Mercurial to generate a new branchheads.cache which would then cause a second refresh, for clients. However if these cache files are moved into a directory like eg .hg/cache/ then GUI clients on OSX (and possibly other platforms) can happily ignore file events in this cache directory.
320 lines
7.0 KiB
Perl
320 lines
7.0 KiB
Perl
$ branchcache=.hg/cache/branchheads
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$ hg init t
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$ cd t
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$ hg branches
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$ echo foo > a
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$ hg add a
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$ hg ci -m "initial"
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$ hg branch foo
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marked working directory as branch foo
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$ hg branch
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foo
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$ hg ci -m "add branch name"
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$ hg branch bar
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marked working directory as branch bar
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$ hg ci -m "change branch name"
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Branch shadowing:
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$ hg branch default
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abort: a branch of the same name already exists (use 'hg update' to switch to it)
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[255]
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$ hg branch -f default
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marked working directory as branch default
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$ hg ci -m "clear branch name"
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created new head
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There should be only one default branch head
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$ hg heads .
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changeset: 3:9d567d0b51f9
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tag: tip
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user: test
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date: Thu Jan 01 00:00:00 1970 +0000
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summary: clear branch name
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$ hg co foo
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0 files updated, 0 files merged, 0 files removed, 0 files unresolved
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$ hg branch
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foo
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$ echo bleah > a
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$ hg ci -m "modify a branch"
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$ hg merge default
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0 files updated, 0 files merged, 0 files removed, 0 files unresolved
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(branch merge, don't forget to commit)
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$ hg branch
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foo
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$ hg ci -m "merge"
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$ hg log
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changeset: 5:dc140083783b
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branch: foo
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tag: tip
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parent: 4:98d14f698afe
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parent: 3:9d567d0b51f9
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user: test
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date: Thu Jan 01 00:00:00 1970 +0000
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summary: merge
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changeset: 4:98d14f698afe
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branch: foo
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parent: 1:0079f24813e2
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user: test
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date: Thu Jan 01 00:00:00 1970 +0000
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summary: modify a branch
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changeset: 3:9d567d0b51f9
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user: test
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date: Thu Jan 01 00:00:00 1970 +0000
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summary: clear branch name
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changeset: 2:ed2bbf4e0102
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branch: bar
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user: test
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date: Thu Jan 01 00:00:00 1970 +0000
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summary: change branch name
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changeset: 1:0079f24813e2
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branch: foo
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user: test
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date: Thu Jan 01 00:00:00 1970 +0000
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summary: add branch name
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changeset: 0:db01e8ea3388
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user: test
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date: Thu Jan 01 00:00:00 1970 +0000
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summary: initial
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$ hg branches
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foo 5:dc140083783b
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default 3:9d567d0b51f9 (inactive)
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bar 2:ed2bbf4e0102 (inactive)
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$ hg branches -q
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foo
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default
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bar
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Test for invalid branch cache:
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$ hg rollback
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rolling back to revision 4 (undo commit)
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$ cp $branchcache .hg/bc-invalid
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$ hg log -r foo
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changeset: 4:98d14f698afe
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branch: foo
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tag: tip
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parent: 1:0079f24813e2
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user: test
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date: Thu Jan 01 00:00:00 1970 +0000
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summary: modify a branch
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$ cp .hg/bc-invalid $branchcache
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$ hg --debug log -r foo
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invalidating branch cache (tip differs)
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changeset: 4:98d14f698afeaff8cb612dcf215ce95e639effc3
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branch: foo
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tag: tip
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parent: 1:0079f24813e2b73a891577c243684c5066347bc8
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parent: -1:0000000000000000000000000000000000000000
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manifest: 4:d01b250baaa05909152f7ae07d7a649deea0df9a
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user: test
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date: Thu Jan 01 00:00:00 1970 +0000
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files: a
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extra: branch=foo
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description:
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modify a branch
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$ rm $branchcache
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$ echo corrupted > $branchcache
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$ hg log -qr foo
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4:98d14f698afe
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$ cat $branchcache
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98d14f698afeaff8cb612dcf215ce95e639effc3 4
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9d567d0b51f9e2068b054e1948e1a927f99b5874 default
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98d14f698afeaff8cb612dcf215ce95e639effc3 foo
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ed2bbf4e01029020711be82ca905283e883f0e11 bar
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Push should update the branch cache:
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$ hg init ../target
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Pushing just rev 0:
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$ hg push -qr 0 ../target
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$ cat ../target/$branchcache
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db01e8ea3388fd3c7c94e1436ea2bd6a53d581c5 0
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db01e8ea3388fd3c7c94e1436ea2bd6a53d581c5 default
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Pushing everything:
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$ hg push -qf ../target
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$ cat ../target/$branchcache
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98d14f698afeaff8cb612dcf215ce95e639effc3 4
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9d567d0b51f9e2068b054e1948e1a927f99b5874 default
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98d14f698afeaff8cb612dcf215ce95e639effc3 foo
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ed2bbf4e01029020711be82ca905283e883f0e11 bar
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Update with no arguments: tipmost revision of the current branch:
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$ hg up -q -C 0
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$ hg up -q
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$ hg id
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9d567d0b51f9
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$ hg up -q 1
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$ hg up -q
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$ hg id
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98d14f698afe (foo) tip
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$ hg branch foobar
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marked working directory as branch foobar
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$ hg up
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abort: branch foobar not found
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[255]
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Fastforward merge:
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$ hg branch ff
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marked working directory as branch ff
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$ echo ff > ff
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$ hg ci -Am'fast forward'
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adding ff
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$ hg up foo
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0 files updated, 0 files merged, 1 files removed, 0 files unresolved
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$ hg merge ff
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1 files updated, 0 files merged, 0 files removed, 0 files unresolved
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(branch merge, don't forget to commit)
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$ hg branch
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foo
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$ hg commit -m'Merge ff into foo'
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created new head
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$ hg parents
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changeset: 6:6af8030670c9
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branch: foo
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tag: tip
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user: test
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date: Thu Jan 01 00:00:00 1970 +0000
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summary: Merge ff into foo
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$ hg manifest
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a
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ff
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Test merging, add 3 default heads and one test head:
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$ cd ..
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$ hg init merges
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$ cd merges
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$ echo a > a
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$ hg ci -Ama
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adding a
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$ echo b > b
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$ hg ci -Amb
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adding b
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$ hg up 0
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0 files updated, 0 files merged, 1 files removed, 0 files unresolved
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$ echo c > c
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$ hg ci -Amc
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adding c
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created new head
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$ hg up 0
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0 files updated, 0 files merged, 1 files removed, 0 files unresolved
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$ echo d > d
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$ hg ci -Amd
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adding d
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created new head
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$ hg up 0
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0 files updated, 0 files merged, 1 files removed, 0 files unresolved
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$ hg branch test
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marked working directory as branch test
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$ echo e >> e
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$ hg ci -Ame
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adding e
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$ hg log
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changeset: 4:3a1e01ed1df4
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branch: test
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tag: tip
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parent: 0:cb9a9f314b8b
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user: test
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date: Thu Jan 01 00:00:00 1970 +0000
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summary: e
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changeset: 3:980f7dc84c29
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parent: 0:cb9a9f314b8b
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user: test
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date: Thu Jan 01 00:00:00 1970 +0000
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summary: d
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changeset: 2:d36c0562f908
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parent: 0:cb9a9f314b8b
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user: test
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date: Thu Jan 01 00:00:00 1970 +0000
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summary: c
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changeset: 1:d2ae7f538514
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user: test
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date: Thu Jan 01 00:00:00 1970 +0000
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summary: b
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changeset: 0:cb9a9f314b8b
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user: test
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date: Thu Jan 01 00:00:00 1970 +0000
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summary: a
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Implicit merge with test branch as parent:
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$ hg merge
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abort: branch 'test' has one head - please merge with an explicit rev
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(run 'hg heads' to see all heads)
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[255]
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$ hg up -C default
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1 files updated, 0 files merged, 1 files removed, 0 files unresolved
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Implicit merge with default branch as parent:
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$ hg merge
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abort: branch 'default' has 3 heads - please merge with an explicit rev
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(run 'hg heads .' to see heads)
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[255]
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3 branch heads, explicit merge required:
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$ hg merge 2
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1 files updated, 0 files merged, 0 files removed, 0 files unresolved
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(branch merge, don't forget to commit)
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$ hg ci -m merge
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2 branch heads, implicit merge works:
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$ hg merge
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1 files updated, 0 files merged, 0 files removed, 0 files unresolved
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(branch merge, don't forget to commit)
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