X-Git-Url: http://nitlanguage.org

diff --git a/src/compiler/coloring.nit b/src/compiler/coloring.nit
index e2afc48..80f29ec 100644
--- a/src/compiler/coloring.nit
+++ b/src/compiler/coloring.nit
@@ -160,9 +160,16 @@ end
 #
 # Possible colors:
 #
-# * A:0, B:1, C: 2, D: 1, E: 3, F:3, G:2, H:4
+# * A: 0
+# * B: 1
+# * C: 2
+# * D: 1
+# * E: 3
+# * F: 3
+# * G: 2
+# * H: 4
 #
-# see: Ducournau, R. (2011).
+# SEE: Ducournau, R. (2011).
 # Coloring, a versatile technique for implementing object-oriented languages.
 # Software: Practice and Experience, 41(6), 627–659.
 class POSetColorer[E: Object]
@@ -171,6 +178,9 @@ class POSetColorer[E: Object]
 	var is_colored = false
 
 	# Resulting ids
+	#
+	# All ids are strictly positive (`>= 1`).
+	#
 	# REQUIRE: is_colored
 	fun ids: Map[E, Int] do
 		assert is_colored
@@ -216,7 +226,7 @@ class POSetColorer[E: Object]
 		ids_cache.clear
 		var elements = new HashSet[E].from(poset_cache.to_a)
 		for e in poset_cache.linearize(elements) do
-			ids_cache[e] = ids_cache.length
+			ids_cache[e] = ids_cache.length + 1
 		end
 	end
 
@@ -439,16 +449,21 @@ end
 # No coloring order is garantied
 #
 # Example:
-#	buckets[A] = {x1, x2}
-#   buckets[B] = {x1, x3, x4}
-#	buckets[C] = {x2, x3}
+#
+# * buckets[A] = {x1, x2}
+# * buckets[B] = {x1, x3, x4}
+# * buckets[C] = {x2, x3}
+#
 # Conflicts:
-#	x1: {x2, x3, x4}
-#   x2: {x1, x3}
-#   x3: {x1, x2, x4}
-#   x4: {x1, x3}
+#
+# * x1: {x2, x3, x4}
+# * x2: {x1, x3}
+# * x3: {x1, x2, x4}
+# * x4: {x1, x3}
+#
 # Possible colors:
-#	x1: 0, x2: 1, x3: 2, x4: 1
+#
+# * x1: 0, x2: 1, x3: 2, x4: 1
 class BucketsColorer[H: Object, E: Object]
 	private var colors = new HashMap[E, Int]
 	private var conflicts = new HashMap[E, Set[E]]