Document git-svn's first-parent rule

git-svn has the following rule to detect the SVN base for its
operations: find the first git-svn-id line reachable through
first-parent ancestry.  IOW,

  git log --grep=^git-svn-id: --first-parent -1

Document this, as it is very important when using merges with git-svn.

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
This commit is contained in:
Thomas Rast 2009-11-16 11:15:17 +01:00 committed by Eric Wong
parent 6111b93499
commit ce45a45f24

View File

@ -742,6 +742,16 @@ merges you've made. Furthermore, if you merge or pull from a git branch
that is a mirror of an SVN branch, 'dcommit' may commit to the wrong
branch.
If you do merge, note the following rule: 'git svn dcommit' will
attempt to commit on top of the SVN commit named in
------------------------------------------------------------------------
git log --grep=^git-svn-id: --first-parent -1
------------------------------------------------------------------------
You 'must' therefore ensure that the most recent commit of the branch
you want to dcommit to is the 'first' parent of the merge. Chaos will
ensue otherwise, especially if the first parent is an older commit on
the same SVN branch.
'git clone' does not clone branches under the refs/remotes/ hierarchy or
any 'git svn' metadata, or config. So repositories created and managed with
using 'git svn' should use 'rsync' for cloning, if cloning is to be done