-GIT_DIR=`git-rev-parse --git-dir` || exit $?
-
-usage () {
- echo >&2 "usage: $(basename $0)"' [-d <branch>] | [[-f] <branch> [start-point]]
-
-If no arguments, show available branches and mark current branch with a star.
+USAGE='[-d <branch>] | [[-f] <branch> [start-point]]'
+LONG_USAGE='If no arguments, show available branches and mark current branch with a star.