git-prune-script


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#!/bin/sh
dryrun=
while case "$#" in 0) break ;; esac
do
    case "$1" in
    -n) dryrun=echo ;;
    --) break ;;
    -*) echo >&2 "usage: git-prune-script [ -n ] [ heads... ]"; exit 1 ;;
    *)  break ;;
    esac
    shift;
done

: ${GIT_DIR=.git}
: ${GIT_OBJECT_DIRECTORY="${SHA1_FILE_DIRECTORY-"$GIT_DIR/objects"}"}

git-fsck-cache --cache --unreachable "$@" |
sed -ne '/unreachable /{
    s/unreachable [^ ][^ ]* //
    s|\(..\)|\1/|p
}' | {
	cd "$GIT_OBJECT_DIRECTORY" || exit
	xargs -r $dryrun rm -f
}