Easy way to print usage using awk

easy-shell-usage.sh

#!/bin/sh
#
# This is a test script
#
# Usage: easy-shell-usage.sh [<arguments>]
#
# There aren't any arguments available, but if there were they would be documented here.
# Anything in the first block of comments starting at the "Usage" line.

# Prints usage, but this comment won't be printed
usage() {
  awk '/# Usage/{ x=1 } x==1 { print $0 } !/^#/ && x==1 { exit 0 }' $0 >&2
  exit 1
}

test $# -gt 0 || usage

printf "Arguments: %s\n" "$@"
exit 0