patches and low-level development discussion

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 #!/bin/sh -eu
#
# SPDX-FileCopyrightText: 2021-2022 Alyssa Ross <hi@alyssa.is>
# SPDX-FileCopyrightText: 2022 Unikie
# SPDX-License-Identifier: EUPL-1.2+

substr() {
	str=$1
	beg=$2
	end=$3
	echo "$str" | cut -c "$beg-$end"
}

u1=$(substr "$1" 1 8)
u2=$(substr "$1" 9 12)
u3=$(substr "$1" 13 16)
u4=$(substr "$1" 17 20)
u5=$(substr "$1" 21 32)
printf "%s\n" "$u1-$u2-$u3-$u4-$u5"