Blocky potrace

potrace-blocky.sh

#!/bin/bash
argv=("$0" "$@") # $# == ${#argv[@]} + 1
last=${argv[$#]}

newwidth=$(( $(identify -format "%w" -- "$last") * 10))
newheight=$(( $(identify -format "%h" -- "$last") * 10))

# select every arg but last and argv[0]
mkbitmap -n -s 1 -o - -- "$last" |				# -n turns off filtering
	convert -scale "${newwidth}x${newheight}" -- - - |	# convert does a blocky scale
	/usr/bin/potrace "${argv[@]:1:$#-1}" -r 10 -a 0 -- -

modified (or idea) from https://gist.github.com/bendmorris/7170209
save this as /usr/local/bin/potrace to cheat fontforge

* $# == ${#argv[@]} - 1