: included from t2016 and others . ./test-lib.sh set_state () { echo "$3" > "$1" && git add "$1" && echo "$2" > "$1" } save_state () { noslash="$(echo "$1" | tr / _)" && cat "$1" > _worktree_"$noslash" && git show :"$1" > _index_"$noslash" } set_and_save_state () { set_state "$@" && save_state "$1" } verify_state () { test "$(cat "$1")" = "$2" && test "$(git show :"$1")" = "$3" } verify_saved_state () { noslash="$(echo "$1" | tr / _)" && verify_state "$1" "$(cat _worktree_"$noslash")" "$(cat _index_"$noslash")" } save_head () { git rev-parse HEAD > _head } verify_saved_head () { test "$(cat _head)" = "$(git rev-parse HEAD)" }