idea of a helper script for Sabayon overlay splitting

gistfile1.sh

#!/bin/bash

# What to remove from sabayon-distro overlay?
# Stuff useful for Gentoo users listed here.
# Remove Sabayon modified ebuilds from this list.

# <slawomir.nizio at sabayon.org>

what=(
app-admin
# etc
x11-plugins
x11-themes/cairo-dock-themes
x11-themes/equinox-themes
x11-wm
)

# Usage of "${what[*]}" is correct here.
_echo_exec() { echo -n "execute: "; printf '[%s]' "$@"; echo; }
_echo_exec git filter-branch --prune-empty --index-filter "git rm --cached --ignore-unmatch -r ${what[*]}" HEAD

echo press enter if ok
read x

git filter-branch --prune-empty --index-filter "git rm --cached --ignore-unmatch -r ${what[*]}" HEAD

echo cleanup, rm ref? press enter twice if ok
read x
read x

set -x

git remote rm origin
git update-ref -d refs/original/refs/heads/master
git reflog expire --expire=now --all
git gc --prune=now

set +x

echo end