hooks: add HG_NODE_LAST to txnclose and changegroup hook environments
Sometimes a txnclose or changegroup hook wants to iterate through all
the changesets in transaction: in that situation usually the revset
`$HG_NODE:` is used to select the revisions. Unfortunately this revset
sometimes may contain too many changesets because we don't have the
write lock while the hook runs newer changes may be added to
repository in the meantime.
That's why there is a need for extra variable carrying the information about
the last change in the transaction.
$ cat <<EOF >> $HGRCPATH
> [extensions]
> mq =
> [mq]
> git = keep
> [diff]
> nodates = 1
> EOF
init:
$ hg init repo
$ cd repo
$ echo a > a
$ hg ci -Am adda
adding a
$ echo a >> a
$ hg qnew -f p1
$ echo b >> a
$ hg qnew -f p2
$ echo c >> a
$ hg qnew -f p3
Fold in the middle of the queue:
(this tests also that editor is not invoked if '--edit' is not
specified)
$ hg qpop p1
popping p3
popping p2
now at: p1
$ hg qdiff
diff -r 07f494440405 a
--- a/a
+++ b/a
@@ -1,1 +1,2 @@
a
+a
$ HGEDITOR=cat hg qfold p2
$ grep git .hg/patches/p1 && echo 'git patch found!'
[1]
$ hg qser
p1
p3
$ hg qdiff
diff -r 07f494440405 a
--- a/a
+++ b/a
@@ -1,1 +1,3 @@
a
+a
+b
Fold with local changes:
$ echo d >> a
$ hg qfold p3
abort: local changes found, qrefresh first
[255]
$ hg diff -c .
diff -r 07f494440405 -r ???????????? a (glob)
--- a/a
+++ b/a
@@ -1,1 +1,3 @@
a
+a
+b
$ hg revert -a --no-backup
reverting a
Fold git patch into a regular patch, expect git patch:
$ echo a >> a
$ hg qnew -f regular
$ hg cp a aa
$ hg qnew --git -f git
$ hg qpop
popping git
now at: regular
$ hg qfold git
$ cat .hg/patches/regular
# HG changeset patch
# Parent ???????????????????????????????????????? (glob)
diff --git a/a b/a
--- a/a
+++ b/a
@@ -1,3 +1,4 @@
a
a
b
+a
diff --git a/a b/aa
copy from a
copy to aa
--- a/a
+++ b/aa
@@ -1,3 +1,4 @@
a
a
b
+a
$ hg qpop
popping regular
now at: p1
$ hg qdel regular
Fold regular patch into a git patch, expect git patch:
$ hg cp a aa
$ hg qnew --git -f git
$ echo b >> aa
$ hg qnew -f regular
$ hg qpop
popping regular
now at: git
$ hg qfold regular
$ cat .hg/patches/git
# HG changeset patch
# Parent ???????????????????????????????????????? (glob)
diff --git a/a b/aa
copy from a
copy to aa
--- a/a
+++ b/aa
@@ -1,3 +1,4 @@
a
a
b
+b
Test saving last-message.txt:
$ hg qrefresh -m "original message"
$ cat > $TESTTMP/commitfailure.py <<EOF
> from mercurial import error
> def reposetup(ui, repo):
> class commitfailure(repo.__class__):
> def commit(self, *args, **kwargs):
> raise error.Abort('emulating unexpected abort')
> repo.__class__ = commitfailure
> EOF
$ cat >> .hg/hgrc <<EOF
> [extensions]
> # this failure occurs before editor invocation
> commitfailure = $TESTTMP/commitfailure.py
> EOF
$ cat > $TESTTMP/editor.sh << EOF
> echo "==== before editing"
> cat \$1
> echo "===="
> (echo; echo "test saving last-message.txt") >> \$1
> EOF
$ hg qapplied
p1
git
$ hg tip --template "{files}\n"
aa
(test that editor is not invoked before transaction starting,
and that combination of '--edit' and '--message' doesn't abort execution)
$ rm -f .hg/last-message.txt
$ HGEDITOR="sh $TESTTMP/editor.sh" hg qfold -e -m MESSAGE p3
qrefresh interrupted while patch was popped! (revert --all, qpush to recover)
abort: emulating unexpected abort
[255]
$ test -f .hg/last-message.txt
[1]
(reset applied patches and directory status)
$ cat >> .hg/hgrc <<EOF
> [extensions]
> # this failure occurs after editor invocation
> commitfailure = !
> EOF
$ hg qapplied
p1
$ hg status -A aa
? aa
$ rm aa
$ hg status -m
M a
$ hg revert --no-backup -q a
$ hg qpush -q git
now at: git
(test that editor is invoked and commit message is saved into
"last-message.txt")
$ cat >> .hg/hgrc <<EOF
> [hooks]
> # this failure occurs after editor invocation
> pretxncommit.unexpectedabort = false
> EOF
$ rm -f .hg/last-message.txt
$ HGEDITOR="sh $TESTTMP/editor.sh" hg qfold -e p3
==== before editing
original message
HG: Enter commit message. Lines beginning with 'HG:' are removed.
HG: Leave message empty to use default message.
HG: --
HG: user: test
HG: branch 'default'
HG: added aa
HG: changed a
====
note: commit message saved in .hg/last-message.txt
transaction abort!
rollback completed
qrefresh interrupted while patch was popped! (revert --all, qpush to recover)
abort: pretxncommit.unexpectedabort hook exited with status 1
[255]
$ cat .hg/last-message.txt
original message
test saving last-message.txt
(confirm whether files listed up in the commit message editing are correct)
$ cat >> .hg/hgrc <<EOF
> [hooks]
> pretxncommit.unexpectedabort =
> EOF
$ hg status -u | while read f; do rm ${f}; done
$ hg revert --no-backup -q --all
$ hg qpush -q git
now at: git
$ hg qpush -q --move p3
now at: p3
$ hg status --rev "git^1" --rev . -arm
M a
A aa
$ cd ..