rust: peek_mut optim for lazy ancestors
This is one of the two optimizations that are also
present in the Python code: replacing pairs of pop/push
on the BinaryHeap by single updates, hence having it
under the hood maintain its consistency (sift) only once.
On Mozilla central, the measured gain (see details below)
is around 7%.
Creating the PeekMut object by calling peek_mut() right away
instead of peek() first is less efficient (gain is only 4%, stats
not included).
Our interpretation is that its creation has a cost which is vasted
in the cases where it ends by droping the value (Peekmut::pop()
just does self.heap.pop() anyway). On the other hand, the immutable
peek() is very fast: it's just taking a reference in the
underlying vector.
The Python version still has another optimization:
if parent(current) == current-1, then the heap doesn't need
to maintain its consistency, since we already know that
it's bigger than all the others in the heap.
Rust's BinaryHeap doesn't allow us to mutate its biggest
element with no housekeeping, but we tried it anyway, with a
copy of the BinaryHeap implementation with a dedicaded added
method: it's not worth the technical debt in our opinion
(we measured only a further 1.6% improvement).
One possible explanation would be that the sift is really fast
anyway in that case, whereas it's not in the case of Python,
because it's at least partly done in slow Python code.
Still it's possible that replacing BinaryHeap by something more
dedicated to discrete ordered types could be faster.
Measurements on mozilla-central:
Three runs of 'hg perfancestors' on the parent changeset:
Moyenne des médianes: 0.100587
! wall 0.100062 comb 0.100000 user 0.100000 sys 0.000000 (best of 98)
! wall 0.135804 comb 0.130000 user 0.130000 sys 0.000000 (max of 98)
! wall 0.102864 comb 0.102755 user 0.099286 sys 0.003469 (avg of 98)
! wall 0.101486 comb 0.110000 user 0.110000 sys 0.000000 (median of 98)
! wall 0.096804 comb 0.090000 user 0.090000 sys 0.000000 (best of 100)
! wall 0.132235 comb 0.130000 user 0.120000 sys 0.010000 (max of 100)
! wall 0.100258 comb 0.100300 user 0.096000 sys 0.004300 (avg of 100)
! wall 0.098384 comb 0.100000 user 0.100000 sys 0.000000 (median of 100)
! wall 0.099925 comb 0.100000 user 0.100000 sys 0.000000 (best of 98)
! wall 0.133518 comb 0.140000 user 0.130000 sys 0.010000 (max of 98)
! wall 0.102381 comb 0.102449 user 0.098265 sys 0.004184 (avg of 98)
! wall 0.101891 comb 0.090000 user 0.090000 sys 0.000000 (median of 98)
Mean of the medians: 0.100587
On the present changeset:
! wall 0.091344 comb 0.090000 user 0.090000 sys 0.000000 (best of 100)
! wall 0.122728 comb 0.120000 user 0.110000 sys 0.010000 (max of 100)
! wall 0.093268 comb 0.093300 user 0.089300 sys 0.004000 (avg of 100)
! wall 0.092567 comb 0.100000 user 0.090000 sys 0.010000 (median of 100)
! wall 0.093294 comb 0.080000 user 0.080000 sys 0.000000 (best of 100)
! wall 0.144887 comb 0.150000 user 0.140000 sys 0.010000 (max of 100)
! wall 0.097708 comb 0.097700 user 0.093400 sys 0.004300 (avg of 100)
! wall 0.094980 comb 0.100000 user 0.090000 sys 0.010000 (median of 100)
! wall 0.091262 comb 0.090000 user 0.080000 sys 0.010000 (best of 100)
! wall 0.123772 comb 0.130000 user 0.120000 sys 0.010000 (max of 100)
! wall 0.093188 comb 0.093200 user 0.089300 sys 0.003900 (avg of 100)
! wall 0.092364 comb 0.100000 user 0.090000 sys 0.010000 (median of 100)
Mean of the medians is 0.0933
Differential Revision: https://phab.mercurial-scm.org/D5358
commit date test
$ hg init test
$ cd test
$ echo foo > foo
$ hg add foo
$ cat > $TESTTMP/checkeditform.sh <<EOF
> env | grep HGEDITFORM
> true
> EOF
$ HGEDITOR="sh $TESTTMP/checkeditform.sh" hg commit -m ""
HGEDITFORM=commit.normal.normal
abort: empty commit message
[255]
$ hg commit -d '0 0' -m commit-1
$ echo foo >> foo
$ hg commit -d '1 4444444' -m commit-3
hg: parse error: impossible time zone offset: 4444444
[255]
$ hg commit -d '1 15.1' -m commit-4
hg: parse error: invalid date: '1\t15.1'
[255]
$ hg commit -d 'foo bar' -m commit-5
hg: parse error: invalid date: 'foo bar'
[255]
$ hg commit -d ' 1 4444' -m commit-6
$ hg commit -d '111111111111 0' -m commit-7
hg: parse error: date exceeds 32 bits: 111111111111
[255]
$ hg commit -d '-111111111111 0' -m commit-7
hg: parse error: date exceeds 32 bits: -111111111111
[255]
$ echo foo >> foo
$ hg commit -d '1901-12-13 20:45:52 +0000' -m commit-7-2
$ echo foo >> foo
$ hg commit -d '-2147483648 0' -m commit-7-3
$ hg log -T '{rev} {date|isodatesec}\n' -l2
3 1901-12-13 20:45:52 +0000
2 1901-12-13 20:45:52 +0000
$ hg commit -d '1901-12-13 20:45:51 +0000' -m commit-7
hg: parse error: date exceeds 32 bits: -2147483649
[255]
$ hg commit -d '-2147483649 0' -m commit-7
hg: parse error: date exceeds 32 bits: -2147483649
[255]
commit added file that has been deleted
$ echo bar > bar
$ hg add bar
$ rm bar
$ hg commit -m commit-8
nothing changed (1 missing files, see 'hg status')
[1]
$ hg commit -m commit-8-2 bar
abort: bar: file not found!
[255]
$ hg -q revert -a --no-backup
$ mkdir dir
$ echo boo > dir/file
$ hg add
adding dir/file
$ hg -v commit -m commit-9 dir
committing files:
dir/file
committing manifest
committing changelog
committed changeset 4:1957363f1ced
$ echo > dir.file
$ hg add
adding dir.file
$ hg commit -m commit-10 dir dir.file
abort: dir: no match under directory!
[255]
$ echo >> dir/file
$ mkdir bleh
$ mkdir dir2
$ cd bleh
$ hg commit -m commit-11 .
abort: bleh: no match under directory!
[255]
$ hg commit -m commit-12 ../dir ../dir2
abort: dir2: no match under directory!
[255]
$ hg -v commit -m commit-13 ../dir
committing files:
dir/file
committing manifest
committing changelog
committed changeset 5:a31d8f87544a
$ cd ..
$ hg commit -m commit-14 does-not-exist
abort: does-not-exist: * (glob)
[255]
#if symlink
$ ln -s foo baz
$ hg commit -m commit-15 baz
abort: baz: file not tracked!
[255]
$ rm baz
#endif
$ touch quux
$ hg commit -m commit-16 quux
abort: quux: file not tracked!
[255]
$ echo >> dir/file
$ hg -v commit -m commit-17 dir/file
committing files:
dir/file
committing manifest
committing changelog
committed changeset 6:32d054c9d085
An empty date was interpreted as epoch origin
$ echo foo >> foo
$ hg commit -d '' -m commit-no-date --config devel.default-date=
$ hg tip --template '{date|isodate}\n' | grep '1970'
[1]
Using the advanced --extra flag
$ echo "[extensions]" >> $HGRCPATH
$ echo "commitextras=" >> $HGRCPATH
$ hg status
? quux
$ hg add quux
$ hg commit -m "adding internal used extras" --extra amend_source=hash
abort: key 'amend_source' is used internally, can't be set manually
[255]
$ hg commit -m "special chars in extra" --extra id@phab=214
abort: keys can only contain ascii letters, digits, '_' and '-'
[255]
$ hg commit -m "empty key" --extra =value
abort: unable to parse '=value', keys can't be empty
[255]
$ hg commit -m "adding extras" --extra sourcehash=foo --extra oldhash=bar
$ hg log -r . -T '{extras % "{extra}\n"}'
branch=default
oldhash=bar
sourcehash=foo
Failed commit with --addremove should not update dirstate
$ echo foo > newfile
$ hg status
? newfile
$ HGEDITOR=false hg ci --addremove
adding newfile
abort: edit failed: false exited with status 1
[255]
$ hg status
? newfile
Make sure we do not obscure unknown requires file entries (issue2649)
$ echo foo >> foo
$ echo fake >> .hg/requires
$ hg commit -m bla
abort: repository requires features unknown to this Mercurial: fake!
(see https://mercurial-scm.org/wiki/MissingRequirement for more information)
[255]
$ cd ..
partial subdir commit test
$ hg init test2
$ cd test2
$ mkdir foo
$ echo foo > foo/foo
$ mkdir bar
$ echo bar > bar/bar
$ hg add
adding bar/bar
adding foo/foo
$ HGEDITOR=cat hg ci -e -m commit-subdir-1 foo
commit-subdir-1
HG: Enter commit message. Lines beginning with 'HG:' are removed.
HG: Leave message empty to abort commit.
HG: --
HG: user: test
HG: branch 'default'
HG: added foo/foo
$ hg ci -m commit-subdir-2 bar
subdir log 1
$ hg log -v foo
changeset: 0:f97e73a25882
user: test
date: Thu Jan 01 00:00:00 1970 +0000
files: foo/foo
description:
commit-subdir-1
subdir log 2
$ hg log -v bar
changeset: 1:aa809156d50d
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
files: bar/bar
description:
commit-subdir-2
full log
$ hg log -v
changeset: 1:aa809156d50d
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
files: bar/bar
description:
commit-subdir-2
changeset: 0:f97e73a25882
user: test
date: Thu Jan 01 00:00:00 1970 +0000
files: foo/foo
description:
commit-subdir-1
$ cd ..
dot and subdir commit test
$ hg init test3
$ echo commit-foo-subdir > commit-log-test
$ cd test3
$ mkdir foo
$ echo foo content > foo/plain-file
$ hg add foo/plain-file
$ HGEDITOR=cat hg ci --edit -l ../commit-log-test foo
commit-foo-subdir
HG: Enter commit message. Lines beginning with 'HG:' are removed.
HG: Leave message empty to abort commit.
HG: --
HG: user: test
HG: branch 'default'
HG: added foo/plain-file
$ echo modified foo content > foo/plain-file
$ hg ci -m commit-foo-dot .
full log
$ hg log -v
changeset: 1:95b38e3a5b2e
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
files: foo/plain-file
description:
commit-foo-dot
changeset: 0:65d4e9386227
user: test
date: Thu Jan 01 00:00:00 1970 +0000
files: foo/plain-file
description:
commit-foo-subdir
subdir log
$ cd foo
$ hg log .
changeset: 1:95b38e3a5b2e
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: commit-foo-dot
changeset: 0:65d4e9386227
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: commit-foo-subdir
$ cd ..
$ cd ..
Issue1049: Hg permits partial commit of merge without warning
$ hg init issue1049
$ cd issue1049
$ echo a > a
$ hg ci -Ama
adding a
$ echo a >> a
$ hg ci -mb
$ hg up 0
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo b >> a
$ hg ci -mc
created new head
$ HGMERGE=true hg merge
merging a
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
should fail because we are specifying a file name
$ hg ci -mmerge a
abort: cannot partially commit a merge (do not specify files or patterns)
[255]
should fail because we are specifying a pattern
$ hg ci -mmerge -I a
abort: cannot partially commit a merge (do not specify files or patterns)
[255]
should succeed
$ HGEDITOR="sh $TESTTMP/checkeditform.sh" hg ci -mmerge --edit
HGEDITFORM=commit.normal.merge
$ cd ..
test commit message content
$ hg init commitmsg
$ cd commitmsg
$ echo changed > changed
$ echo removed > removed
$ hg book activebookmark
$ hg ci -qAm init
$ hg rm removed
$ echo changed >> changed
$ echo added > added
$ hg add added
$ HGEDITOR=cat hg ci -A
HG: Enter commit message. Lines beginning with 'HG:' are removed.
HG: Leave message empty to abort commit.
HG: --
HG: user: test
HG: branch 'default'
HG: bookmark 'activebookmark'
HG: added added
HG: changed changed
HG: removed removed
abort: empty commit message
[255]
test saving last-message.txt
$ hg init sub
$ echo a > sub/a
$ hg -R sub add sub/a
$ cat > sub/.hg/hgrc <<EOF
> [hooks]
> precommit.test-saving-last-message = false
> EOF
$ echo 'sub = sub' > .hgsub
$ hg add .hgsub
$ cat > $TESTTMP/editor.sh <<EOF
> echo "==== before editing:"
> cat \$1
> echo "===="
> echo "test saving last-message.txt" >> \$1
> EOF
$ rm -f .hg/last-message.txt
$ HGEDITOR="sh $TESTTMP/editor.sh" hg commit -S -q
==== before editing:
HG: Enter commit message. Lines beginning with 'HG:' are removed.
HG: Leave message empty to abort commit.
HG: --
HG: user: test
HG: branch 'default'
HG: bookmark 'activebookmark'
HG: subrepo sub
HG: added .hgsub
HG: added added
HG: changed .hgsubstate
HG: changed changed
HG: removed removed
====
abort: precommit.test-saving-last-message hook exited with status 1 (in subrepository "sub")
[255]
$ cat .hg/last-message.txt
test saving last-message.txt
test that '[committemplate] changeset' definition and commit log
specific template keywords work well
$ cat >> .hg/hgrc <<EOF
> [committemplate]
> changeset.commit.normal = 'HG: this is "commit.normal" template
> HG: {extramsg}
> {if(activebookmark,
> "HG: bookmark '{activebookmark}' is activated\n",
> "HG: no bookmark is activated\n")}{subrepos %
> "HG: subrepo '{subrepo}' is changed\n"}'
>
> changeset.commit = HG: this is "commit" template
> HG: {extramsg}
> {if(activebookmark,
> "HG: bookmark '{activebookmark}' is activated\n",
> "HG: no bookmark is activated\n")}{subrepos %
> "HG: subrepo '{subrepo}' is changed\n"}
>
> changeset = HG: this is customized commit template
> HG: {extramsg}
> {if(activebookmark,
> "HG: bookmark '{activebookmark}' is activated\n",
> "HG: no bookmark is activated\n")}{subrepos %
> "HG: subrepo '{subrepo}' is changed\n"}
> EOF
$ hg init sub2
$ echo a > sub2/a
$ hg -R sub2 add sub2/a
$ echo 'sub2 = sub2' >> .hgsub
$ HGEDITOR=cat hg commit -S -q
HG: this is "commit.normal" template
HG: Leave message empty to abort commit.
HG: bookmark 'activebookmark' is activated
HG: subrepo 'sub' is changed
HG: subrepo 'sub2' is changed
abort: empty commit message
[255]
$ cat >> .hg/hgrc <<EOF
> [committemplate]
> changeset.commit.normal =
> # now, "changeset.commit" should be chosen for "hg commit"
> EOF
$ hg bookmark --inactive activebookmark
$ hg forget .hgsub
$ HGEDITOR=cat hg commit -q
HG: this is "commit" template
HG: Leave message empty to abort commit.
HG: no bookmark is activated
abort: empty commit message
[255]
$ cat >> .hg/hgrc <<EOF
> [committemplate]
> changeset.commit =
> # now, "changeset" should be chosen for "hg commit"
> EOF
$ HGEDITOR=cat hg commit -q
HG: this is customized commit template
HG: Leave message empty to abort commit.
HG: no bookmark is activated
abort: empty commit message
[255]
$ cat >> .hg/hgrc <<EOF
> [committemplate]
> changeset = {desc}
> HG: mods={file_mods}
> HG: adds={file_adds}
> HG: dels={file_dels}
> HG: files={files}
> HG:
> {splitlines(diff()) % 'HG: {line}\n'
> }HG:
> HG: mods={file_mods}
> HG: adds={file_adds}
> HG: dels={file_dels}
> HG: files={files}\n
> EOF
$ hg status -amr
M changed
A added
R removed
$ HGEDITOR=cat hg commit -q -e -m "foo bar" changed
foo bar
HG: mods=changed
HG: adds=
HG: dels=
HG: files=changed
HG:
HG: --- a/changed Thu Jan 01 00:00:00 1970 +0000
HG: +++ b/changed Thu Jan 01 00:00:00 1970 +0000
HG: @@ -1,1 +1,2 @@
HG: changed
HG: +changed
HG:
HG: mods=changed
HG: adds=
HG: dels=
HG: files=changed
$ hg status -amr
A added
R removed
$ hg parents --template "M {file_mods}\nA {file_adds}\nR {file_dels}\n"
M changed
A
R
$ hg rollback -q
$ cat >> .hg/hgrc <<EOF
> [committemplate]
> changeset = {desc}
> HG: mods={file_mods}
> HG: adds={file_adds}
> HG: dels={file_dels}
> HG: files={files}
> HG:
> {splitlines(diff("changed")) % 'HG: {line}\n'
> }HG:
> HG: mods={file_mods}
> HG: adds={file_adds}
> HG: dels={file_dels}
> HG: files={files}
> HG:
> {splitlines(diff("added")) % 'HG: {line}\n'
> }HG:
> HG: mods={file_mods}
> HG: adds={file_adds}
> HG: dels={file_dels}
> HG: files={files}
> HG:
> {splitlines(diff("removed")) % 'HG: {line}\n'
> }HG:
> HG: mods={file_mods}
> HG: adds={file_adds}
> HG: dels={file_dels}
> HG: files={files}\n
> EOF
$ HGEDITOR=cat hg commit -q -e -m "foo bar" added removed
foo bar
HG: mods=
HG: adds=added
HG: dels=removed
HG: files=added removed
HG:
HG:
HG: mods=
HG: adds=added
HG: dels=removed
HG: files=added removed
HG:
HG: --- /dev/null Thu Jan 01 00:00:00 1970 +0000
HG: +++ b/added Thu Jan 01 00:00:00 1970 +0000
HG: @@ -0,0 +1,1 @@
HG: +added
HG:
HG: mods=
HG: adds=added
HG: dels=removed
HG: files=added removed
HG:
HG: --- a/removed Thu Jan 01 00:00:00 1970 +0000
HG: +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
HG: @@ -1,1 +0,0 @@
HG: -removed
HG:
HG: mods=
HG: adds=added
HG: dels=removed
HG: files=added removed
$ hg status -amr
M changed
$ hg parents --template "M {file_mods}\nA {file_adds}\nR {file_dels}\n"
M
A added
R removed
$ hg rollback -q
$ cat >> .hg/hgrc <<EOF
> # disable customizing for subsequent tests
> [committemplate]
> changeset =
> EOF
$ cd ..
commit copy
$ hg init dir2
$ cd dir2
$ echo bleh > bar
$ hg add bar
$ hg ci -m 'add bar'
$ hg cp bar foo
$ echo >> bar
$ hg ci -m 'cp bar foo; change bar'
$ hg debugrename foo
foo renamed from bar:26d3ca0dfd18e44d796b564e38dd173c9668d3a9
$ hg debugindex bar
rev linkrev nodeid p1 p2
0 0 26d3ca0dfd18 000000000000 000000000000
1 1 d267bddd54f7 26d3ca0dfd18 000000000000
Test making empty commits
$ hg commit --config ui.allowemptycommit=True -m "empty commit"
$ hg log -r . -v --stat
changeset: 2:d809f3644287
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
description:
empty commit
verify pathauditor blocks evil filepaths
$ cat > evil-commit.py <<EOF
> from __future__ import absolute_import
> from mercurial import context, hg, node, ui as uimod
> notrc = u".h\u200cg".encode('utf-8') + b'/hgrc'
> u = uimod.ui.load()
> r = hg.repository(u, b'.')
> def filectxfn(repo, memctx, path):
> return context.memfilectx(repo, memctx, path,
> b'[hooks]\nupdate = echo owned')
> c = context.memctx(r, [r.changelog.tip(), node.nullid],
> b'evil', [notrc], filectxfn, 0)
> r.commitctx(c)
> EOF
$ "$PYTHON" evil-commit.py
#if windows
$ hg co --clean tip
abort: path contains illegal component: .h\xe2\x80\x8cg\\hgrc (esc)
[255]
#else
$ hg co --clean tip
abort: path contains illegal component: .h\xe2\x80\x8cg/hgrc (esc)
[255]
#endif
$ hg rollback -f
repository tip rolled back to revision 2 (undo commit)
$ cat > evil-commit.py <<EOF
> from __future__ import absolute_import
> from mercurial import context, hg, node, ui as uimod
> notrc = b"HG~1/hgrc"
> u = uimod.ui.load()
> r = hg.repository(u, b'.')
> def filectxfn(repo, memctx, path):
> return context.memfilectx(repo, memctx, path,
> b'[hooks]\nupdate = echo owned')
> c = context.memctx(r, [r[b'tip'].node(), node.nullid],
> b'evil', [notrc], filectxfn, 0)
> r.commitctx(c)
> EOF
$ "$PYTHON" evil-commit.py
$ hg co --clean tip
abort: path contains illegal component: HG~1/hgrc
[255]
$ hg rollback -f
repository tip rolled back to revision 2 (undo commit)
$ cat > evil-commit.py <<EOF
> from __future__ import absolute_import
> from mercurial import context, hg, node, ui as uimod
> notrc = b"HG8B6C~2/hgrc"
> u = uimod.ui.load()
> r = hg.repository(u, b'.')
> def filectxfn(repo, memctx, path):
> return context.memfilectx(repo, memctx, path,
> b'[hooks]\nupdate = echo owned')
> c = context.memctx(r, [r[b'tip'].node(), node.nullid],
> b'evil', [notrc], filectxfn, 0)
> r.commitctx(c)
> EOF
$ "$PYTHON" evil-commit.py
$ hg co --clean tip
abort: path contains illegal component: HG8B6C~2/hgrc
[255]
# test that an unmodified commit template message aborts
$ hg init unmodified_commit_template
$ cd unmodified_commit_template
$ echo foo > foo
$ hg add foo
$ hg commit -m "foo"
$ cat >> .hg/hgrc <<EOF
> [committemplate]
> changeset.commit = HI THIS IS NOT STRIPPED
> HG: this is customized commit template
> HG: {extramsg}
> {if(activebookmark,
> "HG: bookmark '{activebookmark}' is activated\n",
> "HG: no bookmark is activated\n")}{subrepos %
> "HG: subrepo '{subrepo}' is changed\n"}
> EOF
$ cat > $TESTTMP/notouching.sh <<EOF
> true
> EOF
$ echo foo2 > foo2
$ hg add foo2
$ HGEDITOR="sh $TESTTMP/notouching.sh" hg commit
abort: commit message unchanged
[255]
test that text below the --- >8 --- special string is ignored
$ cat <<'EOF' > $TESTTMP/lowercaseline.sh
> cat $1 | sed s/LINE/line/ | tee $1.new
> mv $1.new $1
> EOF
$ hg init ignore_below_special_string
$ cd ignore_below_special_string
$ echo foo > foo
$ hg add foo
$ hg commit -m "foo"
$ cat >> .hg/hgrc <<EOF
> [committemplate]
> changeset.commit = first LINE
> HG: this is customized commit template
> HG: {extramsg}
> HG: ------------------------ >8 ------------------------
> {diff()}
> EOF
$ echo foo2 > foo2
$ hg add foo2
$ HGEDITOR="sh $TESTTMP/notouching.sh" hg ci
abort: commit message unchanged
[255]
$ HGEDITOR="sh $TESTTMP/lowercaseline.sh" hg ci
first line
HG: this is customized commit template
HG: Leave message empty to abort commit.
HG: ------------------------ >8 ------------------------
diff -r e63c23eaa88a foo2
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/foo2 Thu Jan 01 00:00:00 1970 +0000
@@ -0,0 +1,1 @@
+foo2
$ hg log -T '{desc}\n' -r .
first line
test that the special string --- >8 --- isn't used when not at the beginning of
a line
$ cat >> .hg/hgrc <<EOF
> [committemplate]
> changeset.commit = first LINE2
> another line HG: ------------------------ >8 ------------------------
> HG: this is customized commit template
> HG: {extramsg}
> HG: ------------------------ >8 ------------------------
> {diff()}
> EOF
$ echo foo >> foo
$ HGEDITOR="sh $TESTTMP/lowercaseline.sh" hg ci
first line2
another line HG: ------------------------ >8 ------------------------
HG: this is customized commit template
HG: Leave message empty to abort commit.
HG: ------------------------ >8 ------------------------
diff -r 3661b22b0702 foo
--- a/foo Thu Jan 01 00:00:00 1970 +0000
+++ b/foo Thu Jan 01 00:00:00 1970 +0000
@@ -1,1 +1,2 @@
foo
+foo
$ hg log -T '{desc}\n' -r .
first line2
another line HG: ------------------------ >8 ------------------------
also test that this special string isn't accepted when there is some extra text
at the end
$ cat >> .hg/hgrc <<EOF
> [committemplate]
> changeset.commit = first LINE3
> HG: ------------------------ >8 ------------------------foobar
> second line
> HG: this is customized commit template
> HG: {extramsg}
> HG: ------------------------ >8 ------------------------
> {diff()}
> EOF
$ echo foo >> foo
$ HGEDITOR="sh $TESTTMP/lowercaseline.sh" hg ci
first line3
HG: ------------------------ >8 ------------------------foobar
second line
HG: this is customized commit template
HG: Leave message empty to abort commit.
HG: ------------------------ >8 ------------------------
diff -r ce648f5f066f foo
--- a/foo Thu Jan 01 00:00:00 1970 +0000
+++ b/foo Thu Jan 01 00:00:00 1970 +0000
@@ -1,2 +1,3 @@
foo
foo
+foo
$ hg log -T '{desc}\n' -r .
first line3
second line
$ cd ..