git-squash: script to create a squashed patch from a branch.

git-squash.sh

#! /bin/sh
# Produce a squash-commit patch from a branch of changes
MASTER=$1
PATCHBRANCH=$2
SQUASHBRANCH="$PATCHBRANCH-squash"
MESSAGE=$3

git checkout -b $SQUASHBRANCH $MASTER &&
git merge --squash $PATCHBRANCH &&
git commit -a -m "$MESSAGE" &&
git format-patch $MASTER --stdout > $PATCHBRANCH.patch &&
git checkout $PATCHBRANCH &&
git branch -D $SQUASHBRANCH