SVN-4065 - server should enforce LF normalization for svn:eol-style=native (was: PMCs: any Hackathon requests? (deadline 11 October))

On Tue, Oct 8, 2019 at 6:13 PM Julian Foad <julianfoad_at_apache.org> wrote:
> Daniel Shahaf wrote:
> > SVN-4065 - server should enforce LF normalization for svn:eol-
> > style=native files. (Not just a patch is needed, but also a FAQ entry
> > that explains how to handle existing repositories that have this
> > problem, once the patch is released. If it'll be like when
> > svn_repos__validate_prop() was added, then dump/load will still work,
> > but svnsync not.)
>
> That issue appears to need review. It's not clear to me whether the
> server should really enforce LF normalization. I rather think not.
> There's a discussion thread linked from it, with no final conclusion.

My last comment in the issue [1] summarizes the discussion(s) as follows:

[[[
Some recent discussion on dev@:
    http://svn.haxx.se/dev/archive-2012-12/0179.shtml

The current thinking from that thread is that this should (or can only) be
enforced through a pre-commit hook. It was suggested that this would ideally be
some standard, supported (and efficient) pre-commit hook. In a follow-up thread,
Ivan suggested to create a new program "svnhooks" for standardizing such hooks
(and go together with a configuration file to enable/disable certain behaviors):
    http://svn.haxx.se/dev/archive-2012-12/0217.shtml
]]]

I think that was the conclusion from those threads. I.e. it would be
best if we developed a standard "svnhooks" program that can be invoked
from the pre-commit hook (and not try to implement this directly in
the repos layer). At least, after those svnhooks suggestions no-one
objected, so I assumed silent consensus about that way forward :-) ...

Not sure if this is a good bite-sized task for interested hackers though ...
Though it's quite well-contained (develop a separate (small) program
with a configuration file, depending on existing server-side API's),
and we have a clear use case to start with.

[1] https://issues.apache.org/jira/browse/SVN-4065?focusedCommentId=14931167&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-14931167

-- 
Johan