mpv/DOCS/tech/patches.txt

Sending patches:
~~~~~~~~~~~~~~~~

Note: We know our rules place a burden on you, but rest assured that
maintaining a big and complex software project is even harder, so please
accept our rules. We cannot afford to spend our time fixing buggy, broken or
outdated patches. The closer you follow our rules the higher is the probability
that your patch will be included.

 0. Do not send complete files. These need to be diffed by hand to see the
    changes, which makes reviews harder and less likely to occur. Besides as
    soon as one of the files changes, your version becomes harder to apply,
    thus reducing its chances of being accepted.

 1. Always make patches for the CVS version. The README describes how to check
    out CVS and daily CVS snapshots are available from our download page.
    We do not accept patches for releases or outdated CVS versions.

 2. Make unified diffs ('diff -Naur' or 'cvs diff -u'). Unified diffs can be
    applied easily with 'patch'. This is much harder with other diff types.
    Create the diff from the root of the MPlayer source tree, this makes the
    diff easier to apply as it saves the step of changing to the correct
    directory.

 3. Test the functionality of your patch. We'll *refuse* it if it breaks
    something, even if it extends other features!

 4. Read your patch. We'll *refuse* it if it changes indentation of the
    code or if it does tab/space conversion or other cosmetic changes!

    NOTE: If you already wrote some code and did cosmetic changes, you can
    use 'diff -uwbBE' to help you remove them. Don't forget to check the
    patch to make sure diff didn't ignore some important change and remove
    any remaining cosmetics!

 5. Comment parts that really need it (tricky side-effects etc).
    Always document string operations! Comment on what you are doing
    and why it is safe. This makes it easy to review and change your
    code if needed. Commenting trivial code not required.
    Comments must be English!

 6. If you implement new features, add or change command line switches or
    modify the behavior of existing features, please do not forget to also
    update the documentation. The documentation maintainers will assist you
    in doing this. Updating the English documentation is enough. If you
    speak several languages you are of course welcome to update some of the
    translations as well.

 7. If you make independent changes, try to send them as separate patches.
    If your patch is very big, try splitting it into several self-contained
    pieces. Each part can then be reviewed and committed separately.

 8. Send your patch to the mplayer-dev-eng mailing list as a base64-encoded
    attachment with the subject line:
    '[PATCH] very short description of the patch'.
    In the mail, describe in a few sentences what you change and why.
    The subject line is very important if you do not want your patch to get
    lost in the noise. We need the uppercase [PATCH] to be able to search
    for unapplied patches, so please use it.
    Do not compress your patch unless it is larger than 80k or if you know
    that your mailer messes up (reformats) text attachments. It only makes
    handling the patch more difficult.
    You have to subscribe to mplayer-dev-eng since we blocked postings from
    non-subscribers after spam problems and because patches get reviewed by
    the developers on the list. We want you to be available for discussing
    your code, you might be asked to make modifications before we accept it.
    Don't worry, mplayer-dev-eng is not high traffic and you can subscribe
    but unset the "Mail delivery" option so that you can post without getting
    any mails.
    Try to avoid uploading the patch to a web or FTP site, send it directly
    to the mailing list. The fewer steps it takes us to get at the patch the
    higher the likelihood for it to get reviewed and applied. If your patch
    is so big you cannot send it by mail, try splitting it into pieces.

 9. Give us a few days to react. We try to review patches as fast as possible,
    but unfortunately we are constantly overloaded with work, be it MPlayer-
    related or from our day to day lives. If your patch seems to be ignored,
    please resend it and mention that you got ignored. We are interested in
    your work and will eventually either accept it or reject it with an
    explanation of what we disliked about your patch.

10. Do not immediately ask for CVS write access. If you have contributed one or
    more nice, acceptable patches and they need maintaining or you want to
    be an MPlayer developer, you'll get CVS write access.

11. For consistency reasons, all option names must use '-' instead of '_'.

12. If you make a nontrivial contribution and wish to be mentioned in the
    AUTHORS file, include that in your patch.

Thank you!