git-svn: ignore changeless commits when checking for a cherry-pick
commit1cef6500a9edc7997bd0aa4cd1f739f5106ab0a9
authorAndrew Myrick <amyrick@apple.com>
Thu, 7 Jan 2010 00:25:21 +0000 (6 16:25 -0800)
committerEric Wong <normalperson@yhbt.net>
Sat, 23 Jan 2010 11:23:03 +0000 (23 03:23 -0800)
treeaa6c6d0c3dbffead7fbd6c0ce1e273645d69599c
parentaba7dea83bfba411dee0271491d6199d2dca61d9
git-svn: ignore changeless commits when checking for a cherry-pick

Update git-svn to ignore commits that do not change the tree when it is
deciding if an svn merge ticket represents a real branch merge or just a
cherry-pick.

Consider the following integration model in the svn repository:

   F---G  branch1
  /     \
 D  tag1 \   E  tag2
/         \ /
A---B      C  trunk

branch1 is merged to trunk in commit C.

With this patch, git-svn will correctly identify branch1 as a proper merge
parent, instead of incorrectly ignoring it as a cherry-pick.

Signed-off-by: Andrew Myrick <amyrick@apple.com>
Acked-by: Sam Vilain <sam@vilain.net>
Acked-by: Eric Wong <normalperson@yhbt.net>
git-svn.perl