Moving homebrew formulae from one repo (mxcl/master) into another one... Based on @jacknagel's instructions.

gistfile1.txt

diskutil erasevolume HFS+ "ramdisk" `hdiutil attach -nomount ram://1048576`

cd $(brew --repository)

git checkout -b moveit

git filter-branch --prune-empty --index-filter 'git ls-files --full-name --cached | grep -F --invert-match --file=/tmp/list --color=never | xargs git rm --quiet --cached --ignore−unmatch' --subdirectory-filter 'Library/Formula' -d /Volumes/ramdisk -f moveit

cd the-target-repro

git fetch $(brew --repository)

git merge moveit

The git ls-files --full-name --cached | grep -F --invert-match --file=/tmp/list --color=never part seems to work fine, it lists all files/dirs but not the formulae names listed in /tmp/list.

The output is something like:

rm: /Volumes/ramdisk: Resource busy
Rewrite b48bb58df7ba6dbe35a1d6d6c1d165ed957e97dc (9748/16197)

...and seems to succeed. I am not sure if the "Resource busy" is a problem or not.

The ramdisk is populated with a temporary git repository during this process (so files are being written).

I guess I know what is going on ... the xargs has a unnecessary -0 in my case.

updated the gist

Where is the file to keep specified?

The files to move are in /tmp/files in this example. I should update the gist with a line to populate that file.