nitc :: POSetBucketsColorer :: min_color
# Get the next available color considering used colors by other buckets
private fun min_color(others: Collection[H], buckets: Map[H, Set[E]]): Int do
var min = -1
for holder in others do
var color = max_color(holder, buckets)
if color > min then min = color
end
return min + 1
end
src/compiler/coloring.nit:538,2--546,4