py3: use .startswith() instead of bytes[0]
Doing bytes[0] will return the ascii value of that position which breaks
comparison with a bytechar.
This makes test-absorb.t work again on py3.
Differential Revision: https://phab.mercurial-scm.org/D6508
Testing changing branch on commits
==================================
Setup
$ cat >> $HGRCPATH << EOF
> [alias]
> glog = log -G -T "{rev}:{node|short} {desc}\n{branch} ({bookmarks})"
> [experimental]
> evolution = createmarkers
> [extensions]
> rebase=
> EOF
$ hg init repo
$ cd repo
$ for ch in a b c d e; do echo foo >> $ch; hg ci -Aqm "Added "$ch; done
$ hg glog
@ 4:aa98ab95a928 Added e
| default ()
o 3:62615734edd5 Added d
| default ()
o 2:28ad74487de9 Added c
| default ()
o 1:29becc82797a Added b
| default ()
o 0:18d04c59bb5d Added a
default ()
$ hg branches
default 4:aa98ab95a928
Try without passing a new branch name
$ hg branch -r .
abort: no branch name specified for the revisions
[255]
Setting an invalid branch name
$ hg branch -r . a:b
abort: ':' cannot be used in a name
[255]
$ hg branch -r . tip
abort: the name 'tip' is reserved
[255]
$ hg branch -r . 1234
abort: cannot use an integer as a name
[255]
Change on non-linear set of commits
$ hg branch -r 2 -r 4 foo
abort: cannot change branch of non-linear revisions
[255]
Change in middle of the stack (linear commits)
$ hg branch -r 1::3 foo
abort: cannot change branch of changeset with children
[255]
Change with dirty working directory
$ echo bar > a
$ hg branch -r . foo
abort: uncommitted changes
[255]
$ hg revert --all
reverting a
Change on empty revision set
$ hg branch -r 'draft() - all()' foo
abort: empty revision set
[255]
Changing branch on linear set of commits from head
Without obsmarkers
$ hg branch -r 3:4 foo --config experimental.evolution=!
changed branch on 2 changesets
saved backup bundle to $TESTTMP/repo/.hg/strip-backup/62615734edd5-e86bd13a-branch-change.hg
$ hg glog
@ 4:3938acfb5c0f Added e
| foo ()
o 3:9435da006bdc Added d
| foo ()
o 2:28ad74487de9 Added c
| default ()
o 1:29becc82797a Added b
| default ()
o 0:18d04c59bb5d Added a
default ()
$ hg branches
foo 4:3938acfb5c0f
default 2:28ad74487de9 (inactive)
With obsmarkers
$ hg branch -r 3::4 bar
changed branch on 2 changesets
$ hg glog
@ 6:7c1991464886 Added e
| bar ()
o 5:1ea05e93925f Added d
| bar ()
o 2:28ad74487de9 Added c
| default ()
o 1:29becc82797a Added b
| default ()
o 0:18d04c59bb5d Added a
default ()
$ hg branches
bar 6:7c1991464886
default 2:28ad74487de9 (inactive)
Change branch name to an existing branch
$ hg branch -r . default
abort: a branch of the same name already exists
[255]
Changing on a branch head which is not topological head
$ hg branch -r 2 stable
abort: cannot change branch of changeset with children
[255]
Enabling the allowunstable config and trying to change branch on a branch head
which is not a topological head
$ echo "[experimental]" >> .hg/hgrc
$ echo "evolution.allowunstable=yes" >> .hg/hgrc
$ hg branch -r 2 foo
changed branch on 1 changesets
2 new orphan changesets
Changing branch of an obsoleted changeset
$ hg branch -r 4 foobar
abort: hidden revision '4' was rewritten as: 7c1991464886!
(use --hidden to access hidden revisions)
[255]
$ hg branch -r 4 --hidden foobar
abort: cannot change branch of a obsolete changeset
[255]
Make sure bookmark movement is correct
$ hg bookmark b1
$ hg glog -r '.^::'
@ 6:7c1991464886 Added e
| bar (b1)
* 5:1ea05e93925f Added d
| bar ()
~
$ hg branch -r '(.^)::' wat --debug
changing branch of '1ea05e93925f806d875a2163f9b76764be644636' from 'bar' to 'wat'
committing files:
d
committing manifest
committing changelog
new node id is 343660ccab7400da637bd6a211d07f413536d718
changing branch of '7c19914648869f5b02fc7fed31ddee9783fdd680' from 'bar' to 'wat'
committing files:
e
committing manifest
committing changelog
new node id is de1404b45a69f8cc6437d7679033ee33e9efb4ba
moving bookmarks ['b1'] from 7c19914648869f5b02fc7fed31ddee9783fdd680 to de1404b45a69f8cc6437d7679033ee33e9efb4ba
resolving manifests
branchmerge: False, force: False, partial: False
ancestor: 7c1991464886, local: 7c1991464886+, remote: de1404b45a69
starting 4 threads for background file closing (?)
changed branch on 2 changesets
updating the branch cache
invalid branchheads cache (served): tip differs
$ hg glog -r '(.^)::'
@ 9:de1404b45a69 Added e
| wat (b1)
* 8:343660ccab74 Added d
| wat ()
~
Make sure phase handling is correct
$ echo foo >> bar
$ hg ci -Aqm "added bar" --secret
1 new orphan changesets
$ hg glog -r .
@ 10:8ad1294c1660 added bar
| wat (b1)
~
$ hg branch -r . secret
changed branch on 1 changesets
$ hg phase -r .
11: secret
$ hg branches
secret 11:38a9b2d53f98
foo 7:8a4729a5e2b8
wat 9:de1404b45a69 (inactive)
default 2:28ad74487de9 (inactive)
$ hg branch
secret
Changing branch of another head, different from one on which we are
$ hg glog
@ 11:38a9b2d53f98 added bar
| secret (b1)
* 9:de1404b45a69 Added e
| wat ()
* 8:343660ccab74 Added d
| wat ()
| o 7:8a4729a5e2b8 Added c
| | foo ()
x | 2:28ad74487de9 Added c
|/ default ()
o 1:29becc82797a Added b
| default ()
o 0:18d04c59bb5d Added a
default ()
$ hg branch
secret
$ hg branch -r 7 foobar
changed branch on 1 changesets
The current branch must be preserved
$ hg branch
secret
Changing branch on multiple heads at once
$ hg rebase -s 8 -d 12 --keepbranches -q
$ hg rebase -s 14 -d 1 --keepbranches -q
$ hg branch -r 0: stable
changed branch on 6 changesets
$ hg glog
@ 23:6a5ddbcfb870 added bar
| stable (b1)
o 22:baedc6e98a67 Added e
| stable ()
| o 21:99ac7bf8aad1 Added d
| | stable ()
| o 20:0ecb4d39c4bd Added c
|/ stable ()
o 19:fd45b986b109 Added b
| stable ()
o 18:204d2769eca2 Added a
stable ()
$ hg branches
stable 23:6a5ddbcfb870
$ hg branch
stable
Changing to same branch is no-op
$ hg branch -r 19::21 stable
changed branch on 0 changesets
Changing branch name to existing branch name if the branch of parent of root of
revs is same as the new branch name
$ hg branch -r 20::21 bugfix
changed branch on 2 changesets
$ hg glog
o 25:714defe1cf34 Added d
| bugfix ()
o 24:98394def28fc Added c
| bugfix ()
| @ 23:6a5ddbcfb870 added bar
| | stable (b1)
| o 22:baedc6e98a67 Added e
|/ stable ()
o 19:fd45b986b109 Added b
| stable ()
o 18:204d2769eca2 Added a
stable ()
$ hg branch -r 24:25 stable
changed branch on 2 changesets
$ hg glog
o 27:4ec342341562 Added d
| stable ()
o 26:83f48859c2de Added c
| stable ()
| @ 23:6a5ddbcfb870 added bar
| | stable (b1)
| o 22:baedc6e98a67 Added e
|/ stable ()
o 19:fd45b986b109 Added b
| stable ()
o 18:204d2769eca2 Added a
stable ()
Changing branch of a merge commit
$ hg branch -q ghi
$ echo f > f
$ hg ci -qAm 'Added f'
$ hg up -q 27
$ hg branch -q jkl
$ echo g > g
$ hg ci -qAm 'Added g'
$ hg glog -r 'heads(:)'
@ 29:6bc1c6c2c9da Added g
| jkl ()
~
o 28:2f1019bd29d2 Added f
| ghi (b1)
~
$ hg branch -q default
$ hg merge -r 28
4 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg branch -r . abcd
abort: outstanding uncommitted merge
[255]
$ hg ci -m "Merge commit"
$ hg glog -r 'parents(.)::'
@ 30:4d56e6b1eb6b Merge commit
|\ default ()
| o 29:6bc1c6c2c9da Added g
| | jkl ()
| ~
o 28:2f1019bd29d2 Added f
| ghi (b1)
~
$ hg branch -r . ghi
0 files updated, 0 files merged, 4 files removed, 0 files unresolved
changed branch on 1 changesets
$ hg branch -r . jkl
changed branch on 1 changesets
$ hg branch -r . default
changed branch on 1 changesets
$ hg branch -r . stable
abort: a branch of the same name already exists
[255]
Changing branch on public changeset
$ hg phase -r . -p
$ hg branch -r . def
abort: cannot change branch of public changesets
(see 'hg help phases' for details)
[255]
Merge commit with conflicts, with evolution and without
$ mklozenge() {
> echo foo > a
> hg ci -qAm foo
> echo bar > a
> hg ci -qm bar
> hg up -q '.^'
> echo baz > a
> hg ci -qm baz
> hg merge -q -t :local
> echo neither > a
> hg ci -qm neither
> }
$ cd ..
$ hg init merge-with-evolution
$ cd merge-with-evolution
$ mklozenge
$ hg branch -r '(.^)::' abc
changed branch on 2 changesets
$ hg glog
@ 5:c07fa8b34d54 neither
|\ abc ()
| o 4:f2aa51777cc9 baz
| | abc ()
o | 1:2e33c4f0856b bar
|/ default ()
o 0:91cfb6004abf foo
default ()
$ hg cat a
neither
$ cd ..
$ hg init merge-without-evolution
$ cd merge-without-evolution
$ mklozenge
$ cat > .hg/hgrc << EOF
> [experimental]
> evolution = no
> evolution.allowunstable = no
> EOF
$ hg branch -r '(.^)::' abc
changed branch on 2 changesets
saved backup bundle to $TESTTMP/merge-without-evolution/.hg/strip-backup/9a3a2af368f4-8db1a361-branch-change.hg
$ hg glog
@ 3:c07fa8b34d54 neither
|\ abc ()
| o 2:f2aa51777cc9 baz
| | abc ()
o | 1:2e33c4f0856b bar
|/ default ()
o 0:91cfb6004abf foo
default ()
$ hg cat a
neither