commit hooks can see env vars

(and post-transaction one are run unlocked)

  $ cat > $TESTTMP/txnabort.checkargs.py <<EOF

  > from mercurial import pycompat

  > def showargs(ui, repo, hooktype, **kwargs):

  >     kwargs = pycompat.byteskwargs(kwargs)

  >     ui.write(b'%s Python hook: %s\n' % (hooktype,

  >                                         b','.join(sorted(kwargs))))

  > EOF

  $ hg init a

  $ cd a

  $ cat > .hg/hgrc <<EOF

  > [hooks]

  > commit = sh -c "HG_LOCAL= HG_TAG= printenv.py commit"

  > commit.b = sh -c "HG_LOCAL= HG_TAG= printenv.py commit.b"

  > precommit = sh -c  "HG_LOCAL= HG_NODE= HG_TAG= printenv.py precommit"

  > pretxncommit = sh -c "HG_LOCAL= HG_TAG= printenv.py pretxncommit"

  > pretxncommit.tip = hg -q tip

  > pre-identify = sh -c "printenv.py pre-identify 1"

  > pre-cat = sh -c "printenv.py pre-cat"

  > post-cat = sh -c "printenv.py post-cat"

  > pretxnopen = sh -c "HG_LOCAL= HG_TAG= printenv.py pretxnopen"

  > pretxnclose = sh -c "HG_LOCAL= HG_TAG= printenv.py pretxnclose"

  > txnclose = sh -c "HG_LOCAL= HG_TAG= printenv.py txnclose"

  > txnabort.0 = python:$TESTTMP/txnabort.checkargs.py:showargs

  > txnabort.1 = sh -c "HG_LOCAL= HG_TAG= printenv.py txnabort"

  > txnclose.checklock = sh -c "hg debuglock > /dev/null"

  > EOF

  $ echo a > a

  $ hg add a

  $ hg commit -m a

  precommit hook: HG_HOOKNAME=precommit HG_HOOKTYPE=precommit HG_PARENT1=0000000000000000000000000000000000000000

  pretxnopen hook: HG_HOOKNAME=pretxnopen HG_HOOKTYPE=pretxnopen HG_TXNID=TXN:$ID$ HG_TXNNAME=commit

  pretxncommit hook: HG_HOOKNAME=pretxncommit HG_HOOKTYPE=pretxncommit HG_NODE=cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b HG_PARENT1=0000000000000000000000000000000000000000 HG_PENDING=$TESTTMP/a

  0:cb9a9f314b8b

  pretxnclose hook: HG_HOOKNAME=pretxnclose HG_HOOKTYPE=pretxnclose HG_PENDING=$TESTTMP/a HG_PHASES_MOVED=1 HG_TXNID=TXN:$ID$ HG_TXNNAME=commit

  txnclose hook: HG_HOOKNAME=txnclose HG_HOOKTYPE=txnclose HG_PHASES_MOVED=1 HG_TXNID=TXN:$ID$ HG_TXNNAME=commit

  commit hook: HG_HOOKNAME=commit HG_HOOKTYPE=commit HG_NODE=cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b HG_PARENT1=0000000000000000000000000000000000000000

  commit.b hook: HG_HOOKNAME=commit.b HG_HOOKTYPE=commit HG_NODE=cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b HG_PARENT1=0000000000000000000000000000000000000000

  $ hg clone . ../b

  updating to branch default

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ cd ../b

changegroup hooks can see env vars

  $ cat > .hg/hgrc <<EOF

  > [hooks]

  > prechangegroup = sh -c "printenv.py prechangegroup"

  > changegroup = sh -c "printenv.py changegroup"

  > incoming = sh -c "printenv.py incoming"

  > EOF

pretxncommit and commit hooks can see both parents of merge

  $ cd ../a

  $ echo b >> a

  $ hg commit -m a1 -d "1 0"

  precommit hook: HG_HOOKNAME=precommit HG_HOOKTYPE=precommit HG_PARENT1=cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b

  pretxnopen hook: HG_HOOKNAME=pretxnopen HG_HOOKTYPE=pretxnopen HG_TXNID=TXN:$ID$ HG_TXNNAME=commit

  pretxncommit hook: HG_HOOKNAME=pretxncommit HG_HOOKTYPE=pretxncommit HG_NODE=ab228980c14deea8b9555d91c9581127383e40fd HG_PARENT1=cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b HG_PENDING=$TESTTMP/a

  1:ab228980c14d

  pretxnclose hook: HG_HOOKNAME=pretxnclose HG_HOOKTYPE=pretxnclose HG_PENDING=$TESTTMP/a HG_TXNID=TXN:$ID$ HG_TXNNAME=commit

  txnclose hook: HG_HOOKNAME=txnclose HG_HOOKTYPE=txnclose HG_TXNID=TXN:$ID$ HG_TXNNAME=commit

  commit hook: HG_HOOKNAME=commit HG_HOOKTYPE=commit HG_NODE=ab228980c14deea8b9555d91c9581127383e40fd HG_PARENT1=cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b

  commit.b hook: HG_HOOKNAME=commit.b HG_HOOKTYPE=commit HG_NODE=ab228980c14deea8b9555d91c9581127383e40fd HG_PARENT1=cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b

  $ hg update -C 0

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ echo b > b

  $ hg add b

  $ hg commit -m b -d '1 0'

  precommit hook: HG_HOOKNAME=precommit HG_HOOKTYPE=precommit HG_PARENT1=cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b

  pretxnopen hook: HG_HOOKNAME=pretxnopen HG_HOOKTYPE=pretxnopen HG_TXNID=TXN:$ID$ HG_TXNNAME=commit

  pretxncommit hook: HG_HOOKNAME=pretxncommit HG_HOOKTYPE=pretxncommit HG_NODE=ee9deb46ab31e4cc3310f3cf0c3d668e4d8fffc2 HG_PARENT1=cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b HG_PENDING=$TESTTMP/a

  2:ee9deb46ab31

  pretxnclose hook: HG_HOOKNAME=pretxnclose HG_HOOKTYPE=pretxnclose HG_PENDING=$TESTTMP/a HG_TXNID=TXN:$ID$ HG_TXNNAME=commit

  created new head

  txnclose hook: HG_HOOKNAME=txnclose HG_HOOKTYPE=txnclose HG_TXNID=TXN:$ID$ HG_TXNNAME=commit

  commit hook: HG_HOOKNAME=commit HG_HOOKTYPE=commit HG_NODE=ee9deb46ab31e4cc3310f3cf0c3d668e4d8fffc2 HG_PARENT1=cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b

  commit.b hook: HG_HOOKNAME=commit.b HG_HOOKTYPE=commit HG_NODE=ee9deb46ab31e4cc3310f3cf0c3d668e4d8fffc2 HG_PARENT1=cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b

  $ hg merge 1

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  (branch merge, don't forget to commit)

  $ hg commit -m merge -d '2 0'

  precommit hook: HG_HOOKNAME=precommit HG_HOOKTYPE=precommit HG_PARENT1=ee9deb46ab31e4cc3310f3cf0c3d668e4d8fffc2 HG_PARENT2=ab228980c14deea8b9555d91c9581127383e40fd

  pretxnopen hook: HG_HOOKNAME=pretxnopen HG_HOOKTYPE=pretxnopen HG_TXNID=TXN:$ID$ HG_TXNNAME=commit

  pretxncommit hook: HG_HOOKNAME=pretxncommit HG_HOOKTYPE=pretxncommit HG_NODE=07f3376c1e655977439df2a814e3cc14b27abac2 HG_PARENT1=ee9deb46ab31e4cc3310f3cf0c3d668e4d8fffc2 HG_PARENT2=ab228980c14deea8b9555d91c9581127383e40fd HG_PENDING=$TESTTMP/a

  3:07f3376c1e65

  pretxnclose hook: HG_HOOKNAME=pretxnclose HG_HOOKTYPE=pretxnclose HG_PENDING=$TESTTMP/a HG_TXNID=TXN:$ID$ HG_TXNNAME=commit

  txnclose hook: HG_HOOKNAME=txnclose HG_HOOKTYPE=txnclose HG_TXNID=TXN:$ID$ HG_TXNNAME=commit

  commit hook: HG_HOOKNAME=commit HG_HOOKTYPE=commit HG_NODE=07f3376c1e655977439df2a814e3cc14b27abac2 HG_PARENT1=ee9deb46ab31e4cc3310f3cf0c3d668e4d8fffc2 HG_PARENT2=ab228980c14deea8b9555d91c9581127383e40fd

  commit.b hook: HG_HOOKNAME=commit.b HG_HOOKTYPE=commit HG_NODE=07f3376c1e655977439df2a814e3cc14b27abac2 HG_PARENT1=ee9deb46ab31e4cc3310f3cf0c3d668e4d8fffc2 HG_PARENT2=ab228980c14deea8b9555d91c9581127383e40fd

test generic hooks

  $ hg id

  pre-identify hook: HG_ARGS=id HG_HOOKNAME=pre-identify HG_HOOKTYPE=pre-identify HG_OPTS={'bookmarks': None, 'branch': None, 'id': None, 'insecure': None, 'num': None, 'remotecmd': '', 'rev': '', 'ssh': '', 'tags': None, 'template': ''} HG_PATS=[]

  abort: pre-identify hook exited with status 1

  [255]

  $ hg cat b

  pre-cat hook: HG_ARGS=cat b HG_HOOKNAME=pre-cat HG_HOOKTYPE=pre-cat HG_OPTS={'decode': None, 'exclude': [], 'include': [], 'output': '', 'rev': '', 'template': ''} HG_PATS=['b']

  b

  post-cat hook: HG_ARGS=cat b HG_HOOKNAME=post-cat HG_HOOKTYPE=post-cat HG_OPTS={'decode': None, 'exclude': [], 'include': [], 'output': '', 'rev': '', 'template': ''} HG_PATS=['b'] HG_RESULT=0

  $ cd ../b

  $ hg pull ../a

  pulling from ../a

  searching for changes

  prechangegroup hook: HG_HOOKNAME=prechangegroup HG_HOOKTYPE=prechangegroup HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/a

  adding changesets

  adding manifests

  adding file changes

  added 3 changesets with 2 changes to 2 files

  new changesets ab228980c14d:07f3376c1e65

  changegroup hook: HG_HOOKNAME=changegroup HG_HOOKTYPE=changegroup HG_NODE=ab228980c14deea8b9555d91c9581127383e40fd HG_NODE_LAST=07f3376c1e655977439df2a814e3cc14b27abac2 HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/a

  incoming hook: HG_HOOKNAME=incoming HG_HOOKTYPE=incoming HG_NODE=ab228980c14deea8b9555d91c9581127383e40fd HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/a

  incoming hook: HG_HOOKNAME=incoming HG_HOOKTYPE=incoming HG_NODE=ee9deb46ab31e4cc3310f3cf0c3d668e4d8fffc2 HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/a

  incoming hook: HG_HOOKNAME=incoming HG_HOOKTYPE=incoming HG_NODE=07f3376c1e655977439df2a814e3cc14b27abac2 HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/a

  (run 'hg update' to get a working copy)

tag hooks can see env vars

  $ cd ../a

  $ cat >> .hg/hgrc <<EOF

  > pretag = sh -c "printenv.py pretag"

  > tag = sh -c "HG_PARENT1= HG_PARENT2= printenv.py tag"

  > EOF

  $ hg tag -d '3 0' a

  pretag hook: HG_HOOKNAME=pretag HG_HOOKTYPE=pretag HG_LOCAL=0 HG_NODE=07f3376c1e655977439df2a814e3cc14b27abac2 HG_TAG=a

  precommit hook: HG_HOOKNAME=precommit HG_HOOKTYPE=precommit HG_PARENT1=07f3376c1e655977439df2a814e3cc14b27abac2

  pretxnopen hook: HG_HOOKNAME=pretxnopen HG_HOOKTYPE=pretxnopen HG_TXNID=TXN:$ID$ HG_TXNNAME=commit

  pretxncommit hook: HG_HOOKNAME=pretxncommit HG_HOOKTYPE=pretxncommit HG_NODE=539e4b31b6dc99b3cfbaa6b53cbc1c1f9a1e3a10 HG_PARENT1=07f3376c1e655977439df2a814e3cc14b27abac2 HG_PENDING=$TESTTMP/a

  4:539e4b31b6dc

  pretxnclose hook: HG_HOOKNAME=pretxnclose HG_HOOKTYPE=pretxnclose HG_PENDING=$TESTTMP/a HG_TXNID=TXN:$ID$ HG_TXNNAME=commit

  tag hook: HG_HOOKNAME=tag HG_HOOKTYPE=tag HG_LOCAL=0 HG_NODE=07f3376c1e655977439df2a814e3cc14b27abac2 HG_TAG=a

  txnclose hook: HG_HOOKNAME=txnclose HG_HOOKTYPE=txnclose HG_TXNID=TXN:$ID$ HG_TXNNAME=commit

  commit hook: HG_HOOKNAME=commit HG_HOOKTYPE=commit HG_NODE=539e4b31b6dc99b3cfbaa6b53cbc1c1f9a1e3a10 HG_PARENT1=07f3376c1e655977439df2a814e3cc14b27abac2

  commit.b hook: HG_HOOKNAME=commit.b HG_HOOKTYPE=commit HG_NODE=539e4b31b6dc99b3cfbaa6b53cbc1c1f9a1e3a10 HG_PARENT1=07f3376c1e655977439df2a814e3cc14b27abac2

  $ hg tag -l la

  pretag hook: HG_HOOKNAME=pretag HG_HOOKTYPE=pretag HG_LOCAL=1 HG_NODE=539e4b31b6dc99b3cfbaa6b53cbc1c1f9a1e3a10 HG_TAG=la

  tag hook: HG_HOOKNAME=tag HG_HOOKTYPE=tag HG_LOCAL=1 HG_NODE=539e4b31b6dc99b3cfbaa6b53cbc1c1f9a1e3a10 HG_TAG=la

pretag hook can forbid tagging

  $ cat >> .hg/hgrc <<EOF

  > pretag.forbid = sh -c "printenv.py pretag.forbid 1"

  > EOF

  $ hg tag -d '4 0' fa

  pretag hook: HG_HOOKNAME=pretag HG_HOOKTYPE=pretag HG_LOCAL=0 HG_NODE=539e4b31b6dc99b3cfbaa6b53cbc1c1f9a1e3a10 HG_TAG=fa

  pretag.forbid hook: HG_HOOKNAME=pretag.forbid HG_HOOKTYPE=pretag HG_LOCAL=0 HG_NODE=539e4b31b6dc99b3cfbaa6b53cbc1c1f9a1e3a10 HG_TAG=fa

  abort: pretag.forbid hook exited with status 1

  [255]

  $ hg tag -l fla

  pretag hook: HG_HOOKNAME=pretag HG_HOOKTYPE=pretag HG_LOCAL=1 HG_NODE=539e4b31b6dc99b3cfbaa6b53cbc1c1f9a1e3a10 HG_TAG=fla

  pretag.forbid hook: HG_HOOKNAME=pretag.forbid HG_HOOKTYPE=pretag HG_LOCAL=1 HG_NODE=539e4b31b6dc99b3cfbaa6b53cbc1c1f9a1e3a10 HG_TAG=fla

  abort: pretag.forbid hook exited with status 1

  [255]

pretxncommit hook can see changeset, can roll back txn, changeset no

more there after

  $ cat >> .hg/hgrc <<EOF

  > pretxncommit.forbid0 = sh -c "hg tip -q"

  > pretxncommit.forbid1 = sh -c "printenv.py pretxncommit.forbid 1"

  > EOF

  $ echo z > z

  $ hg add z

  $ hg -q tip

  4:539e4b31b6dc

  $ hg commit -m 'fail' -d '4 0'

  precommit hook: HG_HOOKNAME=precommit HG_HOOKTYPE=precommit HG_PARENT1=539e4b31b6dc99b3cfbaa6b53cbc1c1f9a1e3a10

  pretxnopen hook: HG_HOOKNAME=pretxnopen HG_HOOKTYPE=pretxnopen HG_TXNID=TXN:$ID$ HG_TXNNAME=commit

  pretxncommit hook: HG_HOOKNAME=pretxncommit HG_HOOKTYPE=pretxncommit HG_NODE=6f611f8018c10e827fee6bd2bc807f937e761567 HG_PARENT1=539e4b31b6dc99b3cfbaa6b53cbc1c1f9a1e3a10 HG_PENDING=$TESTTMP/a

  5:6f611f8018c1

  5:6f611f8018c1

  pretxncommit.forbid hook: HG_HOOKNAME=pretxncommit.forbid1 HG_HOOKTYPE=pretxncommit HG_NODE=6f611f8018c10e827fee6bd2bc807f937e761567 HG_PARENT1=539e4b31b6dc99b3cfbaa6b53cbc1c1f9a1e3a10 HG_PENDING=$TESTTMP/a

  transaction abort!

  txnabort Python hook: txnid,txnname

  txnabort hook: HG_HOOKNAME=txnabort.1 HG_HOOKTYPE=txnabort HG_TXNID=TXN:$ID$ HG_TXNNAME=commit

  rollback completed

  abort: pretxncommit.forbid1 hook exited with status 1

  [255]

  $ hg -q tip

  4:539e4b31b6dc

(Check that no 'changelog.i.a' file were left behind)

  $ ls -1 .hg/store/

  00changelog.i

  00manifest.i

  data

  fncache (repofncache !)

  journal.phaseroots

  phaseroots

  undo

  undo.backup.fncache (repofncache !)

  undo.backupfiles

  undo.phaseroots

precommit hook can prevent commit

  $ cat >> .hg/hgrc <<EOF

  > precommit.forbid = sh -c "printenv.py precommit.forbid 1"

  > EOF

  $ hg commit -m 'fail' -d '4 0'

  precommit hook: HG_HOOKNAME=precommit HG_HOOKTYPE=precommit HG_PARENT1=539e4b31b6dc99b3cfbaa6b53cbc1c1f9a1e3a10

  precommit.forbid hook: HG_HOOKNAME=precommit.forbid HG_HOOKTYPE=precommit HG_PARENT1=539e4b31b6dc99b3cfbaa6b53cbc1c1f9a1e3a10

  abort: precommit.forbid hook exited with status 1

  [255]

  $ hg -q tip

  4:539e4b31b6dc

preupdate hook can prevent update

  $ cat >> .hg/hgrc <<EOF

  > preupdate = sh -c "printenv.py preupdate"

  > EOF

  $ hg update 1

  preupdate hook: HG_HOOKNAME=preupdate HG_HOOKTYPE=preupdate HG_PARENT1=ab228980c14d

  0 files updated, 0 files merged, 2 files removed, 0 files unresolved

update hook

  $ cat >> .hg/hgrc <<EOF

  > update = sh -c "printenv.py update"

  > EOF

  $ hg update

  preupdate hook: HG_HOOKNAME=preupdate HG_HOOKTYPE=preupdate HG_PARENT1=539e4b31b6dc

  update hook: HG_ERROR=0 HG_HOOKNAME=update HG_HOOKTYPE=update HG_PARENT1=539e4b31b6dc

  2 files updated, 0 files merged, 0 files removed, 0 files unresolved

pushkey hook

  $ cat >> .hg/hgrc <<EOF

  > pushkey = sh -c "printenv.py pushkey"

  > EOF

  $ cd ../b

  $ hg bookmark -r null foo

  $ hg push -B foo ../a

  pushing to ../a

  searching for changes

  no changes found

  pretxnopen hook: HG_HOOKNAME=pretxnopen HG_HOOKTYPE=pretxnopen HG_TXNID=TXN:$ID$ HG_TXNNAME=push

  pretxnclose hook: HG_BOOKMARK_MOVED=1 HG_BUNDLE2=1 HG_HOOKNAME=pretxnclose HG_HOOKTYPE=pretxnclose HG_PENDING=$TESTTMP/a HG_SOURCE=push HG_TXNID=TXN:$ID$ HG_TXNNAME=push HG_URL=file:$TESTTMP/a

  pushkey hook: HG_BUNDLE2=1 HG_HOOKNAME=pushkey HG_HOOKTYPE=pushkey HG_KEY=foo HG_NAMESPACE=bookmarks HG_NEW=0000000000000000000000000000000000000000 HG_PUSHKEYCOMPAT=1 HG_SOURCE=push HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/a

  txnclose hook: HG_BOOKMARK_MOVED=1 HG_BUNDLE2=1 HG_HOOKNAME=txnclose HG_HOOKTYPE=txnclose HG_SOURCE=push HG_TXNID=TXN:$ID$ HG_TXNNAME=push HG_URL=file:$TESTTMP/a

  exporting bookmark foo

  [1]

  $ cd ../a

listkeys hook

  $ cat >> .hg/hgrc <<EOF

  > listkeys = sh -c "printenv.py listkeys"

  > EOF

  $ hg bookmark -r null bar

  pretxnopen hook: HG_HOOKNAME=pretxnopen HG_HOOKTYPE=pretxnopen HG_TXNID=TXN:$ID$ HG_TXNNAME=bookmark

  pretxnclose hook: HG_BOOKMARK_MOVED=1 HG_HOOKNAME=pretxnclose HG_HOOKTYPE=pretxnclose HG_PENDING=$TESTTMP/a HG_TXNID=TXN:$ID$ HG_TXNNAME=bookmark

  txnclose hook: HG_BOOKMARK_MOVED=1 HG_HOOKNAME=txnclose HG_HOOKTYPE=txnclose HG_TXNID=TXN:$ID$ HG_TXNNAME=bookmark

  $ cd ../b

  $ hg pull -B bar ../a

  pulling from ../a

  listkeys hook: HG_HOOKNAME=listkeys HG_HOOKTYPE=listkeys HG_NAMESPACE=bookmarks HG_VALUES={'bar': '0000000000000000000000000000000000000000', 'foo': '0000000000000000000000000000000000000000'}

  no changes found

  adding remote bookmark bar

  $ cd ../a

test that prepushkey can prevent incoming keys

  $ cat >> .hg/hgrc <<EOF

  > prepushkey = sh -c "printenv.py prepushkey.forbid 1"

  > EOF

  $ cd ../b

  $ hg bookmark -r null baz

  $ hg push -B baz ../a

  pushing to ../a

  searching for changes

  listkeys hook: HG_HOOKNAME=listkeys HG_HOOKTYPE=listkeys HG_NAMESPACE=phases HG_VALUES={'cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b': '1', 'publishing': 'True'}

  listkeys hook: HG_HOOKNAME=listkeys HG_HOOKTYPE=listkeys HG_NAMESPACE=bookmarks HG_VALUES={'bar': '0000000000000000000000000000000000000000', 'foo': '0000000000000000000000000000000000000000'}

  no changes found

  pretxnopen hook: HG_HOOKNAME=pretxnopen HG_HOOKTYPE=pretxnopen HG_TXNID=TXN:$ID$ HG_TXNNAME=push

  prepushkey.forbid hook: HG_BUNDLE2=1 HG_HOOKNAME=prepushkey HG_HOOKTYPE=prepushkey HG_KEY=baz HG_NAMESPACE=bookmarks HG_NEW=0000000000000000000000000000000000000000 HG_PUSHKEYCOMPAT=1 HG_SOURCE=push HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/a

  abort: prepushkey hook exited with status 1

  [255]

  $ cd ../a

test that prelistkeys can prevent listing keys

  $ cat >> .hg/hgrc <<EOF

  > prelistkeys = sh -c "printenv.py prelistkeys.forbid 1"

  > EOF

  $ hg bookmark -r null quux

  pretxnopen hook: HG_HOOKNAME=pretxnopen HG_HOOKTYPE=pretxnopen HG_TXNID=TXN:$ID$ HG_TXNNAME=bookmark

  pretxnclose hook: HG_BOOKMARK_MOVED=1 HG_HOOKNAME=pretxnclose HG_HOOKTYPE=pretxnclose HG_PENDING=$TESTTMP/a HG_TXNID=TXN:$ID$ HG_TXNNAME=bookmark

  txnclose hook: HG_BOOKMARK_MOVED=1 HG_HOOKNAME=txnclose HG_HOOKTYPE=txnclose HG_TXNID=TXN:$ID$ HG_TXNNAME=bookmark

  $ cd ../b

  $ hg pull -B quux ../a

  pulling from ../a

  prelistkeys.forbid hook: HG_HOOKNAME=prelistkeys HG_HOOKTYPE=prelistkeys HG_NAMESPACE=bookmarks

  abort: prelistkeys hook exited with status 1

  [255]

  $ cd ../a

  $ rm .hg/hgrc

prechangegroup hook can prevent incoming changes

  $ cd ../b

  $ hg -q tip

  3:07f3376c1e65

  $ cat > .hg/hgrc <<EOF

  > [hooks]

  > prechangegroup.forbid = sh -c "printenv.py prechangegroup.forbid 1"

  > EOF

  $ hg pull ../a

  pulling from ../a

  searching for changes

  prechangegroup.forbid hook: HG_HOOKNAME=prechangegroup.forbid HG_HOOKTYPE=prechangegroup HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/a

  abort: prechangegroup.forbid hook exited with status 1

  [255]

pretxnchangegroup hook can see incoming changes, can roll back txn,

incoming changes no longer there after

  $ cat > .hg/hgrc <<EOF

  > [hooks]