parent-filter loses my merged branch -- what am I doing wrong?

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Hi everyone,

I'm converting another svn repository to git (yay). It's only about 1000 commits, but over more than 7 years and a cvs->svn conversion.

On Sam Villain's recommendation I'm spending a bit of time cleaning up the branches and merges with git filter-branch, but I don't think I'm quite understanding how it's supposed to work.

I put the repository up here (about 1MB):
	git clone git://git.develooper.com/qpsmtpd.git

I started out making a temporary tag for each svn commit, to have easier to use reference points:

for c in `git rev-list --all --date-order --timestamp | sort -n | awk '{print $2}'`; do svnid=`git show -s $c | tail -1 | sed 's/.*svn.perl.org\/qpsmtpd \///' | sed 's/\ .*//' | sed 's/^branches\///'`
  git tag -f $svnid $c
done

Then I tried getting the first merge adjusted to show both parents. The commit tagged v010@56 should be the second parent for trunk@57 (the original/other parent for trunk@57 is trunk@20).

I tried using:

git filter-branch --tag-name-filter cat --parent-filter '
                 if test $GIT_COMMIT = $(git rev-parse trunk@57)
                 then
echo "-p $(git rev-parse trunk@20) -p $(git rev- parse v010@56)"
                 else
                    cat
                 fi
        ' \
master

... but that seems to just basically throw away the "v010" branch! What did I do wrong? (Some of the other problems with this repository is that we moved the branches around with "svn mv", so some of the branches don't even have the branch point as a parent; but I'll get back to that when I get this simple case working).

(The script also loses all the temporary tags I added; I thought "-- tag-name-filter cat" would preserve them?)


 - ask

--
http://develooper.com/ - http://askask.com/


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