Re: [PATCH] transplant: move a series of commits to a different parent

On Jun 25, 2007, at 9:16 AM, Johannes Sixt wrote:

Steffen Prohaska wrote:

quoted

On Jun 23, 2007, at 11:04 PM, Alex Riesen wrote:

quoted

quoted

git-transplant.sh <onto> <from> <to>

transplant starts with the contents of <onto> and puts on top of
it the contents of files if they are touched by the series of
commits <from>..<to>.  If a commit touches a file the content of
this file is taken as it is in the commit. No merging is
performed. Original authors, commiters, and commit messages are
preserved.

[...]
# detached head
git checkout $(git rev-parse onto) && git format-patch --stdout
--full-index from..to|git am -3

No. This one tries to apply the _changes_ between from..to. What I
need is the resulting _content_ of files modified between from..to.

Install a graft that points the parent of "from" to "onto", then run
git-filter-branch. Like so:

I stumbled over the grafts yesterday and thought that this may be a  
way...

 $ echo "$(git-rev-parse from^0) $(git-rev-parse onto^0)" \
    > .git/info/grafts
 $ git-filter-branch new-to onto..to

... ok this is interesting: git-filter-branch will take the info from
grafts to create its new commits. The new commits will contain all
information independent of the grafts file, right?

... but, I'm not convinced that this is what I need. I need to mix the
tree of onto with the files _modified_ between from..to. Taking _all_
files from the commits between from..to is _wrong_. And I think that
is what the command you proposed would do.

My feeling is that repairing a repository resulting from a broken
cvsimport is a bit more complex than what the existing tools provide
out-of-the box.

	Steffen