prepare-commit-msg hook to include potention Co-authors

.mobbers

Co-authored-by: Joanne Bloggs <jo@example.com>
Co-authored-by: John Dowe <123456+JohnDowe@users.noereply.github.com>

prepare-commit-msg

#!/usr/bin/env sh
firstLine=$(head -n1 $1)
mobbers="$(dirname $0)/../.mobbers"

exec < /dev/tty
awk '{printf("%d: %s\n", NR, $0)}' $mobbers
read -p "Select co-authors (enter to continue): " selected
coauthorLines=$(echo $selected | sed -Ee 's/([0-9]+)/\1p;/g')
exec <&-

if [ -z "$firstLine"  ] ;then
  echo "\n\n${coauthorLines}$(cat "$1")" > "$1"
fi

This now lets you choose your co-authors before you edit your commit message.