dirstate-v2: no longer register the data-file during transaction
If the data file change during the transaction, we cannot truncate it.
The content of the file itself is fine as it will get backed up at the same time
as the docket.
Leaving the trailing data at the end of failed transaction is fine. The
dirstate-v2 format supports it. The dead data will simply we written over if
necessary.
$ hgcommit() {
> hg commit -u user "$@"
> }
$ hg init clhead
$ cd clhead
$ touch foo && hg add && hgcommit -m 'foo'
adding foo
$ touch bar && hg add && hgcommit -m 'bar'
adding bar
$ touch baz && hg add && hgcommit -m 'baz'
adding baz
$ echo "flub" > foo
$ hgcommit -m "flub"
$ echo "nub" > foo
$ hgcommit -m "nub"
$ hg up -C 2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo "c1" > c1
$ hg add c1
$ hgcommit -m "c1"
created new head
$ echo "c2" > c1
$ hgcommit -m "c2"
$ hg up -C 2
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ echo "d1" > d1
$ hg add d1
$ hgcommit -m "d1"
created new head
$ echo "d2" > d1
$ hgcommit -m "d2"
$ hg tag -l good
fail with three heads
$ hg up -C good
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg merge
abort: branch 'default' has 3 heads - please merge with an explicit rev
(run 'hg heads .' to see heads, specify rev with -r)
[255]
close one of the heads
$ hg up -C 6
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hgcommit -m 'close this head' --close-branch
succeed with two open heads
$ hg up -C good
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg up -C good
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg merge
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hgcommit -m 'merged heads'
hg update -C 8
$ hg update -C 8
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
hg branch some-branch
$ hg branch some-branch
marked working directory as branch some-branch
(branches are permanent and global, did you want a bookmark?)
hg commit
$ hgcommit -m 'started some-branch'
hg commit --close-branch
$ hgcommit --close-branch -m 'closed some-branch'
hg update default
$ hg update default
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
hg merge some-branch
$ hg merge some-branch
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
hg commit (no reopening of some-branch)
$ hgcommit -m 'merge with closed branch'
$ cd ..