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Setting up git-multimail on gitolite
====================================
``git-multimail`` supports gitolite 3 natively.
The explanations below show an easy way to set up ``git-multimail``,
but leave ``git-multimail`` installed and unconfigured for a while. If
you run gitolite on a production server, it is advised that you
execute the step "Set up the hook" last to avoid confusing your users
in the meantime.
Set up the hook
---------------
Log in as your gitolite user.
Create a file ``.gitolite/hooks/common/post-receive`` on your gitolite
account containing (adapt the path, obviously)::
#!/bin/sh
exec /path/to/git-multimail/git-multimail/git_multimail.py "$@"
Make sure it's executable (``chmod +x``). Record the hook in
gitolite::
gitolite setup
Configuration
-------------
First, you have to allow the admin to set Git configuration variables.
As gitolite user, edit the line containing ``GIT_CONFIG_KEYS`` in file
``.gitolite.rc``, to make it look like::
GIT_CONFIG_KEYS => 'multimailhook\..*',
You can now log out and return to your normal user.
In the ``gitolite-admin`` clone, edit the file ``conf/gitolite.conf``
and add::
repo @all
# Not strictly needed as git_multimail.py will chose gitolite if
# $GL_USER is set.
config multimailhook.environment = gitolite
config multimailhook.mailingList = # Where emails should be sent
config multimailhook.from = # From address to use
Note that by default, gitolite forbids ``<`` and ``>`` in variable
values (for security/paranoia reasons, see
`compensating for UNSAFE_PATT
<http://gitolite.com/gitolite/git-config/index.html#compensating-for-unsafe95patt>`__
in gitolite's documentation for explanations and a way to disable
this). As a consequence, you will not be able to use ``First Last
<First.Last@example.com>`` as recipient email, but specifying
``First.Last@example.com`` alone works.
Obviously, you can customize all parameters on a per-repository basis by
adding these ``config multimailhook.*`` lines in the section
corresponding to a repository or set of repositories.
To activate ``git-multimail`` on a per-repository basis, do not set
``multimailhook.mailingList`` in the ``@all`` section and set it only
for repositories for which you want ``git-multimail``.
Alternatively, you can set up the ``From:`` field on a per-user basis
by adding a ``BEGIN USER EMAILS``/``END USER EMAILS`` section (see
``../README``).
Specificities of Gitolite for Configuration
-------------------------------------------
Empty configuration variables
.............................
With gitolite, the syntax ``config multimailhook.commitList = ""``
unsets the variable instead of setting it to an empty string (see
`here
<http://gitolite.com/gitolite/git-config.html#an-important-warning-about-deleting-a-config-line>`__).
As a result, there is no way to set a variable to the empty string.
In all most places where an empty value is required, git-multimail
now allows to specify special ``"none"`` value (case-sensitive) to
mean the same.
Alternatively, one can use ``" "`` (a single space) instead of ``""``.
In most cases (in particular ``multimailhook.*List`` variables), this
will be equivalent to an empty string.
If you have a use-case where ``"none"`` is not an acceptable value and
you need ``" "`` or ``""`` instead, please report it as a bug to
git-multimail.
Allowing Regular Expressions in Configuration
.............................................
gitolite has a mechanism to prevent unsafe configuration variable
values, which prevent characters like ``|`` commonly used in regular
expressions. If you do not need the safety feature of gitolite and
need to use regular expressions in your configuration (e.g. for
``multimailhook.refFilter*`` variables), set
`UNSAFE_PATT
<http://gitolite.com/gitolite/git-config.html#unsafe-patt>`__ to a
less restrictive value.
Troubleshooting
---------------
Warning: this will disable ``git-multimail`` during the debug, and
could confuse your users. Don't run on a production server.
To debug configuration issues with ``git-multimail``, you can add the
``--stdout`` option when calling ``git_multimail.py`` like this::
#!/bin/sh
exec /path/to/git-multimail/git-multimail/git_multimail.py --stdout "$@"
and try pushing from a test repository. You should see the source of
the email that would have been sent in the output of ``git push``.
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