Question

I am evaluating git-svn and trying to determine how well it will play with a particular svn repository. I am mostly concerned with getting git-svn to perform merges in such a way that the svn:mergeinfo property is correctly set in the subversion repo. Is this possible?

Here is what I have done so far:

# Checkout the SVN repo.
$ git svn clone svn://server/project1 -T trunk -b branches -t tags

# Make sure we are working on trunk.
$ git reset --hard remotes/trunk

# Modify the working copy.
$ vim file.txt

# Commit locally to the git repo.
$ git commit -a

# Push the commits back to the SVN server.
$ git svn dcommit
Committing to svn://server/project1/trunk ...
    M   file.txt
Committed r178
    M   file.txt
r178 = b6e4a3a0c28e7b9aa71d8058d96dcfe7c8a2b349 (trunk)

Now how would I go about merging that particular commit into one of the subversion branches? Again, it is very important to me that git properly set the svn:mergeinfo property when committing the change.

Answer 1

Even though this is an old question, the current state of affairs with git-svn has changed since it was asked. Specifically, in git 1.7.5, there is some limited support for setting the svn:mergeinfo when dcommitting back to svn.

git svn dcommit now accepts the -mergeinfo=<mergeinfo> flag. To quote from the 1.7.5+ man page:

-mergeinfo=<mergeinfo>

Add the given merge information during the dcommit (e.g. –mergeinfo=”/branches/foo:1-10″). All svn server versions can store this information (as a property), and svn clients starting from version 1.5 can make use of it. git svn currently does not use it and does not set it automatically.

One should be very careful when using this though. Even though the man page says “add” what it really means is “replace”. That is, the svn:mergeinfo attribute is set based on what is passed, it does not add the specified revisions to the already existing svn:mergeinfo. Learn from my mistake…

Edit:

It appears that they are still working on improving this even further. As of git-svn 1.7.7, the following text was added to the git-svn man page:

config key: svn.pushmergeinfo

This option will cause git-svn to attempt to automatically populate the svn:mergeinfo property in the SVN repository when possible. Currently, this can only be done when dcommitting non-fast-forward merges where all parents but the first have already been pushed into SVN.