stack: fix phasecache._phasesets check logic
When _phasesets is not None, it's a list, and it contains set()s of revisions
in a specific phase, starting from public, draft, secret and so on. But since
repos are supposed to have the majority of revisions in public phase, the first
element of this list is not a (potentially huge) set, but None.
Previously this code tried to check if there's any element that is None, and
was always finding None at index 0, so the short path was executed every time
and the rest of the function was never used.
This feature requires mercurial 3.0
(and the `only()` revset is 3.0 specific)
$ (hg help revset | grep '"only(' > /dev/null) || exit 80
Test creation of obsolescence marker by path import
$ hg init auto-obsolete
$ cd auto-obsolete
$ echo '[extensions]' >> $HGRCPATH
$ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH
$ echo A > a
$ hg commit -Am A
adding a
$ echo B > b
$ hg commit -Am B
adding b
$ hg up '.^'
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ echo C > c
$ hg commit -Am C
adding c
created new head
$ hg log -G
@ changeset: 2:eb8dd0f31b51
| tag: tip
| parent: 0:f2bbf19cf96d
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: C
|
| o changeset: 1:95b760afef3c
|/ user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: B
|
o changeset: 0:f2bbf19cf96d
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: A
(actual test)
$ hg export 'desc(B)' | hg import - --obsolete
applying patch from stdin
$ hg log -G
@ changeset: 3:00c49133f17e
| tag: tip
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: B
|
o changeset: 2:eb8dd0f31b51
| parent: 0:f2bbf19cf96d
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: C
|
o changeset: 0:f2bbf19cf96d
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: A
$ hg debugobsolete
95b760afef3c234ffb3f9fd391edcb36e60921a4 00c49133f17e5e5a52b6ef1b6d516c0e90b56d8a 0 (*) {'user': 'test'} (glob)
$ hg rollback
repository tip rolled back to revision 2 (undo import)
working directory now based on revision 2
$ hg log -G
@ changeset: 2:eb8dd0f31b51
| tag: tip
| parent: 0:f2bbf19cf96d
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: C
|
| o changeset: 1:95b760afef3c
|/ user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: B
|
o changeset: 0:f2bbf19cf96d
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: A
$ hg debugobsolete