branchmap: skip obsolete revisions while computing heads
It's time to make this part of core Mercurial obsolescence-aware.
Not considering obsolete revisions when computing heads is clearly what
Mercurial should do. But there are a couple of small issues:
- Let's say tip of the repo is obsolete. There are two ways of finding tiprev
for branchcache (both are in use): looking at input data for update() and
looking at computed heads after update(). Previously, repo tip would be
tiprev of the branchcache. With this patch, an obsolete revision can no
longer be tiprev. And depending on what way we use for finding tiprev (input
data vs computed heads) we'll get a different result. This is relevant when
recomputing cache key from cache contents, and may lead to updating cache for
obsolete revisions multiple times (not from scratch, because it still would
be considered valid for a subset of revisions in the repo).
- If all commits on a branch are obsolete, the branchcache will include that
branch, but the list of heads will be empty (that's why there's now `if not
heads` when recomputing tiprev/tipnode from cache contents). Having an entry
for every branch is currently required for notify extension (and
test-notify.t to pass), because notify doesn't handle revsets in its
subscription config very well and will throw an error if e.g. a branch
doesn't exist.
- Cloning static HTTP repos may try to stat() a non-existent obsstore file. The
issue is that we now care about obsolescence during clone, but statichttpvfs
doesn't implement a stat method, so a regular vfs.stat() is used, and it
assumes that file is local and calls os.stat(). During a clone, we're trying
to stat() .hg/store/obsstore, but in static HTTP case we provide a literal
URL to the obsstore file on the remote as if it were a local file path. On
windows it actually results in a failure in test-static-http.t.
The first issue is going to be addressed in a series dedicated to making sure
branchcache is properly and timely written on disk (it wasn't perfect even
before this patch, but there aren't enough tests to demonstrate that). The
second issue will be addressed in a future patch for notify extension that will
make it not raise an exception if a branch doesn't exist. And the third one was
partially addressed in the previous patch in this series and will be properly
fixed in a future patch when this series is accepted.
filteredhash() grows a keyword argument to make sure that branchcache is also
invalidated when there are new obsolete revisions in its repo view. This way
the on-disk cache format is unchanged and compatible between versions (although
it will obviously be recomputed when switching versions before/after this patch
and the repo has obsolete revisions).
There's one test that uses plain `hg up` without arguments while updated to a
pruned commit. To make this test pass, simply return current working directory
parent. Later in this series this code will be replaced by what prune command
does: updating to the closest non-obsolete ancestor.
Test changes:
test-branch-change.t: update branch head and cache update message. The head of
default listed in hg heads is changed because revision 2 was rewritten as 7,
and 1 is the closest ancestor on the same branch, so it's the head of default
now.
The cache invalidation message appears now because of the cache hash change,
since we're now accounting for obsolete revisions. Here's some context:
"served.hidden" repo filter means everything is visible (no filtered
revisions), so before this series branch2-served.hidden file would not contain
any cache hash, only revnum and node. Now it also has a hash when there are
obsolete changesets in the repo. The command that the message appears for is
changing branch of 5 and 6, which are now obsolete, so the cache hash changes.
In general, when cache is simply out-of-date, it can be updated using the old
version as a base. But if cache hash differs, then the cache for that
particular repo filter is recomputed (at least with the current
implementation). This is what happens here.
test-obsmarker-template.t: the pull reports 2 heads changed, but after that the
repo correctly sees only 1. The new message could be better, but it's still an
improvement over the previous one where hg pull suggested merging with an
obsolete revision.
test-obsolete.t: we can see these revisions in hg log --hidden, but they
shouldn't be considered heads even with --hidden.
test-rebase-obsolete{,2}.t: there were new heads created previously after
making new orphan changesets, but they weren't detected. Now we are properly
detecting and reporting them.
test-rebase-obsolete4.t: there's only one head now because the other head is
pruned and was falsely reported before.
test-static-http.t: add obsstore to the list of requested files. This file
doesn't exist on the remotes, but clients want it anyway (they get 404). This
is fine, because there are other nonexistent files that clients request, like
.hg/bookmarks or .hg/cache/tags2-served.
Differential Revision: https://phab.mercurial-scm.org/D12097
$ cat >> $HGRCPATH << EOF
> [experimental]
> hook-track-tags=1
> [hooks]
> txnclose.track-tag=sh ${TESTTMP}/taghook.sh
> EOF
$ cat << EOF > taghook.sh
> #!/bin/sh
> # escape the "$" otherwise the test runner interpret it when writting the
> # file...
> if [ -n "\$HG_TAG_MOVED" ]; then
> echo 'hook: tag changes detected'
> sed 's/^/hook: /' .hg/changes/tags.changes
> fi
> EOF
$ hg init test
$ cd test
$ echo a > a
$ hg add a
$ hg commit -m "test"
$ hg history
changeset: 0:acb14030fe0a
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: test
$ hg tag ' '
abort: tag names cannot consist entirely of whitespace
[10]
(this tests also that editor is not invoked, if '--edit' is not
specified)
$ HGEDITOR=cat hg tag "bleah"
hook: tag changes detected
hook: +A acb14030fe0a21b60322c440ad2d20cf7685a376 bleah
$ hg history
changeset: 1:d4f0d2909abc
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: Added tag bleah for changeset acb14030fe0a
changeset: 0:acb14030fe0a
tag: bleah
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: test
$ echo foo >> .hgtags
$ hg tag "bleah2"
abort: working copy of .hgtags is changed
(please commit .hgtags manually)
[255]
$ hg revert .hgtags
$ hg tag -r 0 x y z y y z
abort: tag names must be unique
[10]
$ hg tag tap nada dot tip
abort: the name 'tip' is reserved
[10]
$ hg tag .
abort: the name '.' is reserved
[10]
$ hg tag null
abort: the name 'null' is reserved
[10]
$ hg tag "bleah"
abort: tag 'bleah' already exists (use -f to force)
[10]
$ hg tag "blecch" "bleah"
abort: tag 'bleah' already exists (use -f to force)
[10]
$ hg tag --remove "blecch"
abort: tag 'blecch' does not exist
[10]
$ hg tag --remove "bleah" "blecch" "blough"
abort: tag 'blecch' does not exist
[10]
$ hg tag -r 0 "bleah0"
hook: tag changes detected
hook: +A acb14030fe0a21b60322c440ad2d20cf7685a376 bleah0
$ hg tag -l -r 1 "bleah1"
$ hg tag gack gawk gorp
hook: tag changes detected
hook: +A 336fccc858a4eb69609a291105009e484a6b6b8d gack
hook: +A 336fccc858a4eb69609a291105009e484a6b6b8d gawk
hook: +A 336fccc858a4eb69609a291105009e484a6b6b8d gorp
$ hg tag -f gack
hook: tag changes detected
hook: -M 336fccc858a4eb69609a291105009e484a6b6b8d gack
hook: +M 799667b6f2d9b957f73fa644a918c2df22bab58f gack
$ hg tag --remove gack gorp
hook: tag changes detected
hook: -R 799667b6f2d9b957f73fa644a918c2df22bab58f gack
hook: -R 336fccc858a4eb69609a291105009e484a6b6b8d gorp
$ hg tag "bleah "
abort: tag 'bleah' already exists (use -f to force)
[10]
$ hg tag " bleah"
abort: tag 'bleah' already exists (use -f to force)
[10]
$ hg tag " bleah"
abort: tag 'bleah' already exists (use -f to force)
[10]
$ hg tag -r 0 " bleahbleah "
hook: tag changes detected
hook: +A acb14030fe0a21b60322c440ad2d20cf7685a376 bleahbleah
$ hg tag -r 0 " bleah bleah "
hook: tag changes detected
hook: +A acb14030fe0a21b60322c440ad2d20cf7685a376 bleah bleah
$ cat .hgtags
acb14030fe0a21b60322c440ad2d20cf7685a376 bleah
acb14030fe0a21b60322c440ad2d20cf7685a376 bleah0
336fccc858a4eb69609a291105009e484a6b6b8d gack
336fccc858a4eb69609a291105009e484a6b6b8d gawk
336fccc858a4eb69609a291105009e484a6b6b8d gorp
336fccc858a4eb69609a291105009e484a6b6b8d gack
799667b6f2d9b957f73fa644a918c2df22bab58f gack
799667b6f2d9b957f73fa644a918c2df22bab58f gack
0000000000000000000000000000000000000000 gack
336fccc858a4eb69609a291105009e484a6b6b8d gorp
0000000000000000000000000000000000000000 gorp
acb14030fe0a21b60322c440ad2d20cf7685a376 bleahbleah
acb14030fe0a21b60322c440ad2d20cf7685a376 bleah bleah
$ cat .hg/localtags
d4f0d2909abc9290e2773c08837d70c1794e3f5a bleah1
tagging on a non-head revision
$ hg update 0
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg tag -l localblah
$ hg tag "foobar"
abort: working directory is not at a branch head (use -f to force)
[10]
$ hg tag -f "foobar"
hook: tag changes detected
hook: +A acb14030fe0a21b60322c440ad2d20cf7685a376 foobar
$ cat .hgtags
acb14030fe0a21b60322c440ad2d20cf7685a376 foobar
$ cat .hg/localtags
d4f0d2909abc9290e2773c08837d70c1794e3f5a bleah1
acb14030fe0a21b60322c440ad2d20cf7685a376 localblah
$ hg tag -l 'xx
> newline'
abort: '\n' cannot be used in a name
[10]
$ hg tag -l 'xx:xx'
abort: ':' cannot be used in a name
[10]
cloning local tags
$ cd ..
$ hg -R test log -r0:5
changeset: 0:acb14030fe0a
tag: bleah
tag: bleah bleah
tag: bleah0
tag: bleahbleah
tag: foobar
tag: localblah
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: test
changeset: 1:d4f0d2909abc
tag: bleah1
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: Added tag bleah for changeset acb14030fe0a
changeset: 2:336fccc858a4
tag: gawk
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: Added tag bleah0 for changeset acb14030fe0a
changeset: 3:799667b6f2d9
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: Added tag gack, gawk, gorp for changeset 336fccc858a4
changeset: 4:154eeb7c0138
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: Added tag gack for changeset 799667b6f2d9
changeset: 5:b4bb47aaff09
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: Removed tag gack, gorp
$ hg clone -q -rbleah1 test test1
hook: tag changes detected
hook: +A acb14030fe0a21b60322c440ad2d20cf7685a376 bleah
$ hg -R test1 parents --style=compact
1[tip] d4f0d2909abc 1970-01-01 00:00 +0000 test
Added tag bleah for changeset acb14030fe0a
$ hg clone -q -r5 test#bleah1 test2
hook: tag changes detected
hook: +A acb14030fe0a21b60322c440ad2d20cf7685a376 bleah
hook: +A acb14030fe0a21b60322c440ad2d20cf7685a376 bleah0
hook: +A 336fccc858a4eb69609a291105009e484a6b6b8d gawk
$ hg -R test2 parents --style=compact
5[tip] b4bb47aaff09 1970-01-01 00:00 +0000 test
Removed tag gack, gorp
$ hg clone -q -U test#bleah1 test3
hook: tag changes detected
hook: +A acb14030fe0a21b60322c440ad2d20cf7685a376 bleah
$ hg -R test3 parents --style=compact
$ cd test
Issue601: hg tag doesn't do the right thing if .hgtags or localtags
doesn't end with EOL
$ "$PYTHON" << EOF
> f = open('.hg/localtags'); last = f.readlines()[-1][:-1]; f.close()
> f = open('.hg/localtags', 'w'); f.write(last); f.close()
> EOF
$ cat .hg/localtags; echo
acb14030fe0a21b60322c440ad2d20cf7685a376 localblah
$ hg tag -l localnewline
$ cat .hg/localtags; echo
acb14030fe0a21b60322c440ad2d20cf7685a376 localblah
c2899151f4e76890c602a2597a650a72666681bf localnewline
$ "$PYTHON" << EOF
> f = open('.hgtags'); last = f.readlines()[-1][:-1]; f.close()
> f = open('.hgtags', 'w'); f.write(last); f.close()
> EOF
$ hg ci -m'broken manual edit of .hgtags'
$ cat .hgtags; echo
acb14030fe0a21b60322c440ad2d20cf7685a376 foobar
$ hg tag newline
hook: tag changes detected
hook: +A a0eea09de1eeec777b46f2085260a373b2fbc293 newline
$ cat .hgtags; echo
acb14030fe0a21b60322c440ad2d20cf7685a376 foobar
a0eea09de1eeec777b46f2085260a373b2fbc293 newline
tag and branch using same name
$ hg branch tag-and-branch-same-name
marked working directory as branch tag-and-branch-same-name
(branches are permanent and global, did you want a bookmark?)
$ hg ci -m"discouraged"
$ hg tag tag-and-branch-same-name
warning: tag tag-and-branch-same-name conflicts with existing branch name
hook: tag changes detected
hook: +A fc93d2ea1cd78e91216c6cfbbf26747c10ce11ae tag-and-branch-same-name
test custom commit messages
$ cat > editor.sh << '__EOF__'
> echo "==== before editing"
> cat "$1"
> echo "===="
> echo "custom tag message" > "$1"
> echo "second line" >> "$1"
> __EOF__
at first, test saving last-message.txt
(test that editor is not invoked before transaction starting)
$ cat > .hg/hgrc << '__EOF__'
> [hooks]
> # this failure occurs before editor invocation
> pretag.test-saving-lastmessage = false
> __EOF__
$ rm -f .hg/last-message.txt
$ HGEDITOR="\"sh\" \"`pwd`/editor.sh\"" hg tag custom-tag -e
abort: pretag.test-saving-lastmessage hook exited with status 1
[40]
$ test -f .hg/last-message.txt
[1]
(test that editor is invoked and commit message is saved into
"last-message.txt")
$ cat >> .hg/hgrc << '__EOF__'
> [hooks]
> pretag.test-saving-lastmessage =
> # this failure occurs after editor invocation
> pretxncommit.unexpectedabort = false
> __EOF__
(this tests also that editor is invoked, if '--edit' is specified,
regardless of '--message')
$ rm -f .hg/last-message.txt
$ HGEDITOR="\"sh\" \"`pwd`/editor.sh\"" hg tag custom-tag -e -m "foo bar"
==== before editing
foo bar
HG: Enter commit message. Lines beginning with 'HG:' are removed.
HG: Leave message empty to abort commit.
HG: --
HG: user: test
HG: branch 'tag-and-branch-same-name'
HG: changed .hgtags
====
transaction abort!
rollback completed
note: commit message saved in .hg/last-message.txt
note: use 'hg commit --logfile .hg/last-message.txt --edit' to reuse it
abort: pretxncommit.unexpectedabort hook exited with status 1
[40]
$ cat .hg/last-message.txt
custom tag message
second line
$ cat >> .hg/hgrc << '__EOF__'
> [hooks]
> pretxncommit.unexpectedabort =
> __EOF__
$ hg status .hgtags
M .hgtags
$ hg revert --no-backup -q .hgtags
then, test custom commit message itself
$ HGEDITOR="\"sh\" \"`pwd`/editor.sh\"" hg tag custom-tag -e
==== before editing
Added tag custom-tag for changeset 75a534207be6
HG: Enter commit message. Lines beginning with 'HG:' are removed.
HG: Leave message empty to abort commit.
HG: --
HG: user: test
HG: branch 'tag-and-branch-same-name'
HG: changed .hgtags
====
hook: tag changes detected
hook: +A 75a534207be6b03576e0c7a4fa5708d045f1c876 custom-tag
$ hg log -l1 --template "{desc}\n"
custom tag message
second line
local tag with .hgtags modified
$ hg tag hgtags-modified
hook: tag changes detected
hook: +A 0f26aaea6f74c3ed6c4aad8844403c9ba128d23a hgtags-modified
$ hg rollback
repository tip rolled back to revision 13 (undo commit)
working directory now based on revision 13
$ hg st
M .hgtags
? .hgtags.orig
? editor.sh
$ hg tag --local baz
$ hg revert --no-backup .hgtags
tagging when at named-branch-head that's not a topo-head
$ hg up default
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg merge -t internal:local
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg ci -m 'merge named branch'
hook: tag changes detected
hook: -R acb14030fe0a21b60322c440ad2d20cf7685a376 bleah
hook: -R acb14030fe0a21b60322c440ad2d20cf7685a376 bleah bleah
hook: -R acb14030fe0a21b60322c440ad2d20cf7685a376 bleah0
hook: -R acb14030fe0a21b60322c440ad2d20cf7685a376 bleahbleah
hook: -R 336fccc858a4eb69609a291105009e484a6b6b8d gawk
$ hg up 13
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg tag new-topo-head
hook: tag changes detected
hook: +A 0f26aaea6f74c3ed6c4aad8844403c9ba128d23a new-topo-head
tagging on null rev
$ hg up null
0 files updated, 0 files merged, 2 files removed, 0 files unresolved
$ hg tag nullrev
abort: working directory is not at a branch head (use -f to force)
[10]
$ hg init empty
$ hg tag -R empty nullrev
abort: cannot tag null revision
[10]
$ hg tag -R empty -r 00000000000 -f nulltag
abort: cannot tag null revision
[10]
issue5539: pruned tags do not appear in .hgtags
$ cat >> $HGRCPATH << EOF
> [experimental]
> evolution.exchange = True
> evolution.createmarkers=True
> EOF
$ hg up e4d483960b9b --quiet
$ echo aaa >>a
$ hg ci -maaa
$ hg log -r . -T "{node}\n"
743b3afd5aa69f130c246806e48ad2e699f490d2
$ hg tag issue5539
hook: tag changes detected
hook: +A 743b3afd5aa69f130c246806e48ad2e699f490d2 issue5539
$ cat .hgtags
acb14030fe0a21b60322c440ad2d20cf7685a376 foobar
a0eea09de1eeec777b46f2085260a373b2fbc293 newline
743b3afd5aa69f130c246806e48ad2e699f490d2 issue5539
$ hg log -r . -T "{node}\n"
abeb261f0508ecebcd345ce21e7a25112df417aa
(mimic 'hg prune' command by obsoleting current changeset and then moving to its parent)
$ hg debugobsolete abeb261f0508ecebcd345ce21e7a25112df417aa --record-parents
1 new obsolescence markers
obsoleted 1 changesets
$ hg up ".^" --quiet
$ cat .hgtags
acb14030fe0a21b60322c440ad2d20cf7685a376 foobar
a0eea09de1eeec777b46f2085260a373b2fbc293 newline
$ echo bbb >>a
$ hg ci -mbbb
$ hg log -r . -T "{node}\n"
089dd20da58cae34165c37b064539c6ac0c6a0dd
$ hg tag issue5539
hook: tag changes detected
hook: -M 743b3afd5aa69f130c246806e48ad2e699f490d2 issue5539
hook: +M 089dd20da58cae34165c37b064539c6ac0c6a0dd issue5539
$ hg id
0accf560a709 tip
$ cat .hgtags
acb14030fe0a21b60322c440ad2d20cf7685a376 foobar
a0eea09de1eeec777b46f2085260a373b2fbc293 newline
089dd20da58cae34165c37b064539c6ac0c6a0dd issue5539
$ hg tags
tip 19:0accf560a709
issue5539 18:089dd20da58c
new-topo-head 13:0f26aaea6f74
baz 13:0f26aaea6f74
custom-tag 12:75a534207be6
tag-and-branch-same-name 11:fc93d2ea1cd7
newline 9:a0eea09de1ee
localnewline 8:c2899151f4e7
localblah 0:acb14030fe0a
foobar 0:acb14030fe0a
$ cd ..
tagging on an uncommitted merge (issue2542)
$ hg init repo-tag-uncommitted-merge
$ cd repo-tag-uncommitted-merge
$ echo c1 > f1
$ hg ci -Am0
adding f1
$ echo c2 > f2
$ hg ci -Am1
adding f2
$ hg co -q 0
$ hg branch b1
marked working directory as branch b1
(branches are permanent and global, did you want a bookmark?)
$ hg ci -m2
$ hg up default
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg merge b1
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg tag t1
abort: uncommitted merge
[20]
$ hg status
$ hg tag --rev 1 t2
abort: uncommitted merge
[20]
$ hg tag --rev 1 --local t3
$ hg tags -v
tip 2:2a156e8887cc
t3 1:c3adabd1a5f4 local
$ cd ..
commit hook on tag used to be run without write lock - issue3344
$ hg init repo-tag
$ touch repo-tag/test
$ hg -R repo-tag commit -A -m "test"
adding test
$ hg init repo-tag-target
$ cat > "$TESTTMP/issue3344.sh" <<EOF
> hg push "$TESTTMP/repo-tag-target"
> EOF
$ hg -R repo-tag --config hooks.commit="sh ../issue3344.sh" tag tag
hook: tag changes detected
hook: +A be090ea6625635128e90f7d89df8beeb2bcc1653 tag
pushing to $TESTTMP/repo-tag-target
searching for changes
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 2 files
hook: tag changes detected
hook: +A be090ea6625635128e90f7d89df8beeb2bcc1653 tag
automatically merge resolvable tag conflicts (i.e. tags that differ in rank)
create two clones with some different tags as well as some common tags
check that we can merge tags that differ in rank
$ hg init repo-automatic-tag-merge
$ cd repo-automatic-tag-merge
$ echo c0 > f0
$ hg ci -A -m0
adding f0
$ hg tag tbase
hook: tag changes detected
hook: +A 6cee5c8f3e5b4ae1a3996d2f6489c3e08eb5aea7 tbase
$ hg up -qr '.^'
$ hg log -r 'wdir()' -T "{latesttagdistance}\n"
1
$ hg up -q
$ hg log -r 'wdir()' -T "{latesttagdistance}\n"
2
$ cd ..
$ hg clone repo-automatic-tag-merge repo-automatic-tag-merge-clone
updating to branch default
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd repo-automatic-tag-merge-clone
$ echo c1 > f1
$ hg ci -A -m1
adding f1
$ hg tag t1 t2 t3
hook: tag changes detected
hook: +A 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t1
hook: +A 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t2
hook: +A 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t3
$ hg tag --remove t2
hook: tag changes detected
hook: -R 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t2
$ hg tag t5
hook: tag changes detected
hook: +A 875517b4806a848f942811a315a5bce30804ae85 t5
$ echo c2 > f2
$ hg ci -A -m2
adding f2
$ hg tag -f t3
hook: tag changes detected
hook: -M 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t3
hook: +M 79505d5360b07e3e79d1052e347e73c02b8afa5b t3
$ cd ../repo-automatic-tag-merge
$ echo c3 > f3
$ hg ci -A -m3
adding f3
$ hg tag -f t4 t5 t6
hook: tag changes detected
hook: +A 9aa4e1292a27a248f8d07339bed9931d54907be7 t4
hook: +A 9aa4e1292a27a248f8d07339bed9931d54907be7 t5
hook: +A 9aa4e1292a27a248f8d07339bed9931d54907be7 t6
$ hg up -q '.^'
$ hg log -r 'wdir()' -T "{changessincelatesttag} changes since {latesttag}\n"
1 changes since t4:t5:t6
$ hg log -r '.' -T "{changessincelatesttag} changes since {latesttag}\n"
0 changes since t4:t5:t6
$ echo c5 > f3
$ hg log -r 'wdir()' -T "{changessincelatesttag} changes since {latesttag}\n"
1 changes since t4:t5:t6
$ hg up -qC
$ hg tag --remove t5
hook: tag changes detected
hook: -R 9aa4e1292a27a248f8d07339bed9931d54907be7 t5
$ echo c4 > f4
$ hg log -r '.' -T "{changessincelatesttag} changes since {latesttag}\n"
2 changes since t4:t6
$ hg log -r '.' -T "{latesttag % '{latesttag}\n'}"
t4
t6
$ hg log -r '.' -T "{latesttag('t4') % 'T: {tag}, C: {changes}, D: {distance}\n'}"
T: t4, C: 2, D: 2
$ hg log -r '.' -T "{latesttag('re:\d') % 'T: {tag}, C: {changes}, D: {distance}\n'}"
T: t4, C: 2, D: 2
T: t6, C: 2, D: 2
$ hg log -r . -T '{join(latesttag(), "*")}\n'
t4*t6
$ hg ci -A -m4
adding f4
$ hg log -r 'wdir()' -T "{changessincelatesttag} changes since {latesttag}\n"
4 changes since t4:t6
$ hg tag t2
hook: tag changes detected
hook: +A 929bca7b18d067cbf3844c3896319a940059d748 t2
$ hg tag -f t6
hook: tag changes detected
hook: -M 9aa4e1292a27a248f8d07339bed9931d54907be7 t6
hook: +M 09af2ce14077a94effef208b49a718f4836d4338 t6
$ cd ../repo-automatic-tag-merge-clone
$ hg pull
pulling from $TESTTMP/repo-automatic-tag-merge
searching for changes
adding changesets
adding manifests
adding file changes
added 6 changesets with 6 changes to 3 files (+1 heads)
new changesets 9aa4e1292a27:b325cc5b642c
hook: tag changes detected
hook: +A 929bca7b18d067cbf3844c3896319a940059d748 t2
hook: +A 9aa4e1292a27a248f8d07339bed9931d54907be7 t4
hook: -R 875517b4806a848f942811a315a5bce30804ae85 t5
hook: +A 09af2ce14077a94effef208b49a718f4836d4338 t6
(run 'hg heads' to see heads, 'hg merge' to merge)
$ hg merge --tool internal:tagmerge
merging .hgtags
2 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg status
M .hgtags
M f3
M f4
$ hg resolve -l
R .hgtags
$ cat .hgtags
9aa4e1292a27a248f8d07339bed9931d54907be7 t4
9aa4e1292a27a248f8d07339bed9931d54907be7 t6
9aa4e1292a27a248f8d07339bed9931d54907be7 t6
09af2ce14077a94effef208b49a718f4836d4338 t6
6cee5c8f3e5b4ae1a3996d2f6489c3e08eb5aea7 tbase
4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t1
929bca7b18d067cbf3844c3896319a940059d748 t2
4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t2
4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t3
4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t2
0000000000000000000000000000000000000000 t2
875517b4806a848f942811a315a5bce30804ae85 t5
9aa4e1292a27a248f8d07339bed9931d54907be7 t5
9aa4e1292a27a248f8d07339bed9931d54907be7 t5
0000000000000000000000000000000000000000 t5
4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t3
79505d5360b07e3e79d1052e347e73c02b8afa5b t3
check that the merge tried to minimize the diff with the first merge parent
$ hg diff --git -r 'p1()' .hgtags
diff --git a/.hgtags b/.hgtags
--- a/.hgtags
+++ b/.hgtags
@@ -1,9 +1,17 @@
+9aa4e1292a27a248f8d07339bed9931d54907be7 t4
+9aa4e1292a27a248f8d07339bed9931d54907be7 t6
+9aa4e1292a27a248f8d07339bed9931d54907be7 t6
+09af2ce14077a94effef208b49a718f4836d4338 t6
6cee5c8f3e5b4ae1a3996d2f6489c3e08eb5aea7 tbase
4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t1
+929bca7b18d067cbf3844c3896319a940059d748 t2
4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t2
4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t3
4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t2
0000000000000000000000000000000000000000 t2
875517b4806a848f942811a315a5bce30804ae85 t5
+9aa4e1292a27a248f8d07339bed9931d54907be7 t5
+9aa4e1292a27a248f8d07339bed9931d54907be7 t5
+0000000000000000000000000000000000000000 t5
4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t3
79505d5360b07e3e79d1052e347e73c02b8afa5b t3
detect merge tag conflicts
$ hg update -C -r tip
3 files updated, 0 files merged, 2 files removed, 0 files unresolved
$ hg tag t7
hook: tag changes detected
hook: +A b325cc5b642c5b465bdbe8c09627cb372de3d47d t7
$ hg update -C -r 'first(sort(head()))'
3 files updated, 0 files merged, 2 files removed, 0 files unresolved
$ printf "%s %s\n" `hg log -r . --template "{node} t7"` >> .hgtags
$ hg commit -m "manually add conflicting t7 tag"
hook: tag changes detected
hook: -R 929bca7b18d067cbf3844c3896319a940059d748 t2
hook: +A 875517b4806a848f942811a315a5bce30804ae85 t5
hook: -M b325cc5b642c5b465bdbe8c09627cb372de3d47d t7
hook: +M ea918d56be86a4afc5a95312e8b6750e1428d9d2 t7
$ hg merge --tool internal:tagmerge
merging .hgtags
automatic .hgtags merge failed
the following 1 tags are in conflict: t7
automatic tag merging of .hgtags failed! (use 'hg resolve --tool :merge' or another merge tool of your choice)
2 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
[1]
$ hg resolve -l
U .hgtags
$ cat .hgtags
6cee5c8f3e5b4ae1a3996d2f6489c3e08eb5aea7 tbase
4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t1
4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t2
4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t3
4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t2
0000000000000000000000000000000000000000 t2
875517b4806a848f942811a315a5bce30804ae85 t5
4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t3
79505d5360b07e3e79d1052e347e73c02b8afa5b t3
ea918d56be86a4afc5a95312e8b6750e1428d9d2 t7
$ cd ..
handle the loss of tags
$ hg clone repo-automatic-tag-merge-clone repo-merge-lost-tags
updating to branch default
4 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd repo-merge-lost-tags
$ echo c5 > f5
$ hg ci -A -m5
adding f5
$ hg tag -f t7
hook: tag changes detected
hook: -M ea918d56be86a4afc5a95312e8b6750e1428d9d2 t7
hook: +M fd3a9e394ce3afb354a496323bf68ac1755a30de t7
$ hg update -r 'p1(t7)'
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ printf '' > .hgtags
$ hg commit -m 'delete all tags'
created new head
$ hg log -r 'max(t7::)'
changeset: 17:ffe462b50880
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: Added tag t7 for changeset fd3a9e394ce3
$ hg update -r 'max(t7::)'
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg merge -r tip --tool internal:tagmerge
merging .hgtags
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg resolve -l
R .hgtags
$ cat .hgtags
6cee5c8f3e5b4ae1a3996d2f6489c3e08eb5aea7 tbase
0000000000000000000000000000000000000000 tbase
4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t1
0000000000000000000000000000000000000000 t1
4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t2
4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t3
4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t2
0000000000000000000000000000000000000000 t2
875517b4806a848f942811a315a5bce30804ae85 t5
0000000000000000000000000000000000000000 t5
4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t3
79505d5360b07e3e79d1052e347e73c02b8afa5b t3
0000000000000000000000000000000000000000 t3
ea918d56be86a4afc5a95312e8b6750e1428d9d2 t7
0000000000000000000000000000000000000000 t7
ea918d56be86a4afc5a95312e8b6750e1428d9d2 t7
fd3a9e394ce3afb354a496323bf68ac1755a30de t7
also check that we minimize the diff with the 1st merge parent
$ hg diff --git -r 'p1()' .hgtags
diff --git a/.hgtags b/.hgtags
--- a/.hgtags
+++ b/.hgtags
@@ -1,12 +1,17 @@
6cee5c8f3e5b4ae1a3996d2f6489c3e08eb5aea7 tbase
+0000000000000000000000000000000000000000 tbase
4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t1
+0000000000000000000000000000000000000000 t1
4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t2
4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t3
4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t2
0000000000000000000000000000000000000000 t2
875517b4806a848f942811a315a5bce30804ae85 t5
+0000000000000000000000000000000000000000 t5
4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t3
79505d5360b07e3e79d1052e347e73c02b8afa5b t3
+0000000000000000000000000000000000000000 t3
ea918d56be86a4afc5a95312e8b6750e1428d9d2 t7
+0000000000000000000000000000000000000000 t7
ea918d56be86a4afc5a95312e8b6750e1428d9d2 t7
fd3a9e394ce3afb354a496323bf68ac1755a30de t7