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[[!comment format=mdwn
username="https://launchpad.net/~arand"
nickname="arand"
subject="comment 2"
date="2013-03-13T12:05:49Z"
content="""
Based on the hints given here I've worked on a filter to both annex and add urls via filter-branch:
[https://gitorious.org/arand-scripts/arand-scripts/blobs/master/annex-filter](https://gitorious.org/arand-scripts/arand-scripts/blobs/master/annex-filter)
The script above is very specific but I think there are a few ideas that can be used in general, the general structure is
#!/bin/bash
# links that already exist
links=$(mktemp)
find . -type l >\"$links\"
# remove from staging area first to not block and then annex
git rm --cached --ignore-unmatch -r bin*
git annex add -c annex.alwayscommit=false bin*
# compare links before and after annexing, remove links that existed before
newlinks=$(mktemp -u)
mkfifo \"$newlinks\"
comm -13 <(sort \"$links\") <(find . -type l | sort) > \"$newlinks\" &
# rewrite links
while IFS= read -r file
do
# link is created below .git-rewrite/t/ during filter-branch, strip two parents for correct target
ln -sf \"$(readlink \"$file\" | sed -e 's%^\.\./\.\./%%')\" \"$file\"
done < \"$newlinks\"
git annex merge
which would be run using
git filter-branch --tree-filter path/annex-filter --tag-filter cat -- --all
or similar.
* I'm using `find` to make sure the only rewritten symlinks are for the newly annexed files, this way it is possible to annex an unknown set of filenames
* If doing several git annex commands using `-c annex.alwayscommit=false` and doing a `git annex merge` at the end instead might be faster.
"""]]
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