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#!/bin/bash
set -eu
fail() {
printf "%s\n" "$1" >>/dev/stderr
exit 32
}
[ "$#" -lt 1 ] && exit 64
IDSstr="$(git log --format="%H" "$1" 2>/dev/null)"
mapfile -t IDS <<< "$IDSstr"
for id in "${IDS[@]}" ; do
PATCH="$(git format-patch -1 --stdout "${id}")"
FN="$(echo "$PATCH" | git interpret-trailers --parse | awk '/^Patch: / {print $2}')"
[ -z "$FN" ] && fail "Patch filename not defined"
printf "%s" "$PATCH" > "$FN"
done
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