The SPDX reference pattern uses “Copyright (c)”, and the second
paragraph is in ALL CAPS. Furthermore, the Boehm-GC text says
“program” instead of “shellscript”.
# Copyright 2018 B. Persson, Bjorn(a)Rombobeorn.se
#
# This material is provided as is, with absolutely no warranty expressed
# or implied. Any use is at your own risk.
#
# Permission is hereby granted to use or copy this shellscript
# for any purpose, provided the above notices are retained on all copies.
# Permission to modify the code and to distribute modified code is granted,
# provided the above notices are retained, and a notice that the code was
# modified is included with the above copyright notice.
Hmm, I guess I should try to get permission to use Boehm-GC verbatim.
Thanks,
Florian