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

diff --git a/src/toolcontext.nit b/src/toolcontext.nit
index f313063..5b9d020 100644
--- a/src/toolcontext.nit
+++ b/src/toolcontext.nit
@@ -90,9 +90,9 @@ class ToolContext
 
 			for m in messages do
 				if opt_no_color.value then
-					stderr.write("{m}\n")
+					sys.stderr.write("{m}\n")
 				else
-					stderr.write("{m.to_color_string}\n")
+					sys.stderr.write("{m.to_color_string}\n")
 				end
 			end
 
@@ -133,7 +133,10 @@ class ToolContext
 			print "{s}"
 		end
 	end
-	
+
+	# Executes a program while checking if it's available and if the execution ended correctly
+	#
+	# Stops execution and prints errors if the program isn't available or didn't end correctly
 	fun exec_and_check(args: Array[String], error: String)
         do
                 var prog = args.first