archive/2.vm/snapshot_lesson


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#!/bin/sh
# Hacky little helper called from edit/ and sandbox/ apps to save a snapshot
# of lesson/ using git.
set -e

test -d lesson/.git || exit 0  # give up if it's not a git repo

cd lesson
# explicitly say '--all' for git 1.9
git add --all .
# bug in git: git diff -q messes up --exit-code
git diff HEAD --exit-code >/dev/null || git commit -a -m . >/dev/null