$ cat <<EOF >> $HGRCPATH

  > [extensions]

  > notify=

  > 

  > [hooks]

  > incoming.notify = python:hgext.notify.hook

  > 

  > [notify]

  > sources = pull

  > diffstat = False

  > 

  > [usersubs]

  > foo@bar = *

  > 

  > [reposubs]

  > * = baz

  > EOF

  $ hg help notify

  notify extension - hooks for sending email notifications at commit/push time

  Subscriptions can be managed through a hgrc file. Default mode is to print

  messages to stdout, for testing and configuring.

  To use, configure the notify extension and enable it in hgrc like this:

    [extensions]

    notify =

    [hooks]

    # one email for each incoming changeset

    incoming.notify = python:hgext.notify.hook

    # batch emails when many changesets incoming at one time

    changegroup.notify = python:hgext.notify.hook

    [notify]

    # config items go here

  Required configuration items:

    config = /path/to/file # file containing subscriptions

  Optional configuration items:

    test = True            # print messages to stdout for testing

    strip = 3              # number of slashes to strip for url paths

    domain = example.com   # domain to use if committer missing domain

    style = ...            # style file to use when formatting email

    template = ...         # template to use when formatting email

    incoming = ...         # template to use when run as incoming hook

    changegroup = ...      # template when run as changegroup hook

    maxdiff = 300          # max lines of diffs to include (0=none, -1=all)

    maxsubject = 67        # truncate subject line longer than this

    diffstat = True        # add a diffstat before the diff content

    sources = serve        # notify if source of incoming changes in this list

                           # (serve == ssh or http, push, pull, bundle)

    merge = False          # send notification for merges (default True)

    [email]

    from = user@host.com   # email address to send as if none given

    [web]

    baseurl = http://hgserver/... # root of hg web site for browsing commits

  The notify config file has same format as a regular hgrc file. It has two

  sections so you can express subscriptions in whatever way is handier for you.

    [usersubs]

    # key is subscriber email, value is ","-separated list of glob patterns

    user@host = pattern

    [reposubs]

    # key is glob pattern, value is ","-separated list of subscriber emails

    pattern = user@host

  Glob patterns are matched against path to repository root.

  If you like, you can put notify config file in repository that users can push

  changes to, they can manage their own subscriptions.

  no commands defined

  $ hg init a

  $ echo a > a/a

commit

  $ hg --cwd a commit -Ama -d '0 0'

  adding a

clone

  $ hg --traceback clone a b

  updating to branch default

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

  $ echo a >> a/a

commit

  $ hg --traceback --cwd a commit -Amb -d '1 0'

on Mac OS X 10.5 the tmp path is very long so would get stripped in the subject line

  $ cat <<EOF >> $HGRCPATH

  > [notify]

  > maxsubject = 200

  > EOF

the python call below wraps continuation lines, which appear on Mac OS X 10.5 because

of the very long subject line

pull (minimal config)

  $ hg --traceback --cwd b pull ../a | \

  >   python -c 'import sys,re; print re.sub("\n[\t ]", " ", sys.stdin.read()),'

  pulling from ../a

  searching for changes

  adding changesets

  adding manifests

  adding file changes

  added 1 changesets with 1 changes to 1 files

  Content-Type: text/plain; charset="us-ascii"

  MIME-Version: 1.0

  Content-Transfer-Encoding: 7bit

  Date: * (glob)

  Subject: changeset in $TESTTMP/b: b

  From: test

  X-Hg-Notification: changeset 0647d048b600

  Message-Id: <*> (glob)

  To: baz, foo@bar

  changeset 0647d048b600 in $TESTTMP/b

  details: $TESTTMP/b?cmd=changeset;node=0647d048b600

  description: b

  diffs (6 lines):

  diff -r cb9a9f314b8b -r 0647d048b600 a

  --- a/a	Thu Jan 01 00:00:00 1970 +0000

  +++ b/a	Thu Jan 01 00:00:01 1970 +0000

  @@ -1,1 +1,2 @@ a

  +a

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

  $ cat <<EOF >> $HGRCPATH

  > [notify]

  > config = `pwd`/.notify.conf

  > domain = test.com

  > strip = 42

  > template = Subject: {desc|firstline|strip}\nFrom: {author}\nX-Test: foo\n\nchangeset {node|short} in {webroot}\ndescription:\n\t{desc|tabindent|strip}

  > 

  > [web]

  > baseurl = http://test/

  > EOF

fail for config file is missing

  $ hg --cwd b rollback

  repository tip rolled back to revision 0 (undo pull)

  working directory now based on revision 0

  $ hg --cwd b pull ../a 2>&1 | grep 'error.*\.notify\.conf' > /dev/null && echo pull failed

  pull failed

  $ touch ".notify.conf"

pull

  $ hg --cwd b rollback

  repository tip rolled back to revision 0 (undo pull)

  working directory now based on revision 0

  $ hg --traceback --cwd b pull ../a  | \

  >   python -c 'import sys,re; print re.sub("\n\t", " ", sys.stdin.read()),'

  pulling from ../a

  searching for changes

  adding changesets

  adding manifests

  adding file changes

  added 1 changesets with 1 changes to 1 files

  Content-Type: text/plain; charset="us-ascii"

  MIME-Version: 1.0

  Content-Transfer-Encoding: 7bit

  X-Test: foo

  Date: * (glob)

  Subject: b

  From: test@test.com

  X-Hg-Notification: changeset 0647d048b600

  Message-Id: <*> (glob)

  To: baz@test.com, foo@bar

  changeset 0647d048b600 in b

  description: b

  diffs (6 lines):

  diff -r cb9a9f314b8b -r 0647d048b600 a

  --- a/a	Thu Jan 01 00:00:00 1970 +0000

  +++ b/a	Thu Jan 01 00:00:01 1970 +0000

  @@ -1,1 +1,2 @@

   a

  +a

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

  $ cat << EOF >> $HGRCPATH

  > [hooks]

  > incoming.notify = python:hgext.notify.hook

  > 

  > [notify]

  > sources = pull

  > diffstat = True

  > EOF

pull

  $ hg --cwd b rollback

  repository tip rolled back to revision 0 (undo pull)

  working directory now based on revision 0

  $ hg --traceback --cwd b pull ../a | \

  >   python -c 'import sys,re; print re.sub("\n\t", " ", sys.stdin.read()),'

  pulling from ../a

  searching for changes

  adding changesets

  adding manifests

  adding file changes

  added 1 changesets with 1 changes to 1 files

  Content-Type: text/plain; charset="us-ascii"

  MIME-Version: 1.0

  Content-Transfer-Encoding: 7bit

  X-Test: foo

  Date: * (glob)

  Subject: b

  From: test@test.com

  X-Hg-Notification: changeset 0647d048b600

  Message-Id: <*> (glob)

  To: baz@test.com, foo@bar

  changeset 0647d048b600 in b

  description: b

  diffstat:

   a |  1 +

   1 files changed, 1 insertions(+), 0 deletions(-)

  diffs (6 lines):

  diff -r cb9a9f314b8b -r 0647d048b600 a

  --- a/a	Thu Jan 01 00:00:00 1970 +0000

  +++ b/a	Thu Jan 01 00:00:01 1970 +0000

  @@ -1,1 +1,2 @@

   a

  +a

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

test merge

  $ cd a

  $ hg up -C 0

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

  $ echo a >> a

  $ hg ci -Am adda2 -d '2 0'

  created new head

  $ hg merge

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

  (branch merge, don't forget to commit)

  $ hg ci -m merge -d '3 0'

  $ cd ..

  $ hg --traceback --cwd b pull ../a | \

  >   python -c 'import sys,re; print re.sub("\n\t", " ", sys.stdin.read()),'

  pulling from ../a

  searching for changes

  adding changesets

  adding manifests

  adding file changes

  added 2 changesets with 0 changes to 0 files

  Content-Type: text/plain; charset="us-ascii"

  MIME-Version: 1.0

  Content-Transfer-Encoding: 7bit

  X-Test: foo

  Date: * (glob)

  Subject: adda2

  From: test@test.com

  X-Hg-Notification: changeset 0a184ce6067f

  Message-Id: <*> (glob)

  To: baz@test.com, foo@bar

  changeset 0a184ce6067f in b

  description: adda2

  diffstat:

   a |  1 +

   1 files changed, 1 insertions(+), 0 deletions(-)

  diffs (6 lines):

  diff -r cb9a9f314b8b -r 0a184ce6067f a

  --- a/a	Thu Jan 01 00:00:00 1970 +0000

  +++ b/a	Thu Jan 01 00:00:02 1970 +0000

  @@ -1,1 +1,2 @@

   a

  +a

  Content-Type: text/plain; charset="us-ascii"

  MIME-Version: 1.0

  Content-Transfer-Encoding: 7bit

  X-Test: foo

  Date: * (glob)

  Subject: merge

  From: test@test.com

  Message-Id: <*> (glob)

  To: baz@test.com, foo@bar

  description: merge

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

truncate multi-byte subject

  $ cat <<EOF >> $HGRCPATH

  > [notify]

  > maxsubject = 4

  > EOF

  $ echo a >> a/a

  $ hg --cwd a --encoding utf-8 commit -A -d '0 0' \

  >   -m `python -c 'print "\xc3\xa0\xc3\xa1\xc3\xa2\xc3\xa3\xc3\xa4"'`

  $ hg --traceback --cwd b --encoding utf-8 pull ../a | \

  >   python -c 'import sys,re; print re.sub("\n\t", " ", sys.stdin.read()),'

  pulling from ../a

  searching for changes

  adding changesets

  adding manifests

  adding file changes

  added 1 changesets with 1 changes to 1 files

  Content-Type: text/plain; charset="us-ascii"

  MIME-Version: 1.0

  Content-Transfer-Encoding: 8bit

  X-Test: foo

  Date: * (glob)

  Subject: \xc3\xa0... (esc)

  From: test@test.com

  Message-Id: <*> (glob)

  To: baz@test.com, foo@bar

  description: \xc3\xa0\xc3\xa1\xc3\xa2\xc3\xa3\xc3\xa4 (esc)

  diffstat:

   a |  1 +

   1 files changed, 1 insertions(+), 0 deletions(-)

  diffs (7 lines):

  --- a/a	Thu Jan 01 00:00:03 1970 +0000

  +++ b/a	Thu Jan 01 00:00:00 1970 +0000

  @@ -1,2 +1,3 @@

   a

   a

  +a

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