#!/bin/sh
nawk ' BEGIN {
	FS = "="
}

/^!*i(attr|nherit)/ {
	i = index($0, "=")
	n = split(substr($0, i + 1), vals, "~")
	printf "%s=%s", $1, vals[1]
	for (j = 2; j <= n; j++)
		printf "\n%s", vals[j]
	printf "\n"
	next
}
{
	print $0
} '