On Thursday, 18. December 2008 14:51:12 Whit Armstrong wrote:
> For instance, if my repository contains foo.c, and 100 other files.
>
> I would like to create a new and separate repository containing only
> the revision history of foo.c.
>
> Would someone mind pointing me at some documentation for this
> procedure if it exists?
This worked for me:
git filter-branch --tag-name-filter cat --index-filter \
'git ls-files -s |grep -P "\t(DIR1|DIR2)" \
|GIT_INDEX_FILE=$GIT_INDEX_FILE.new git update-index --index-info &&
mv $GIT_INDEX_FILE.new $GIT_INDEX_FILE' -- --all
Run "git ls-files -s" to see the output format.
Replace the "DIR1|DIR2" with "foo.c".
Later on you might want to remove empty commits from the history:
git filter-branch --tag-name-filter cat --commit-filter 'if [ z$1 = z`git rev-parse $3^{tree}` ]; then skip_commit "$@"; else git commit-tree "$@"; fi' "$@" -- --all
If you want to run two filter-branch commands in a row
or you want to free up the space in .git afterwards:
- git for-each-ref --format='%(refname)' refs/original | xargs -i git update-ref -d {}
- git reflog expire --expire=0 --all
- git repack -a -d
- git prune
Cheers,
Thomas
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