# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1444293750 -7200
# Node ID 1af9f6724ea2769235756245890737b76f2ffb7e
# Parent  8fd84d0ba366a57caad776fff3b120d16fb92441
Made the experimental square function application slightly cleaner.

diff -r 8fd84d0ba366 -r 1af9f6724ea2 optimiser.py
--- a/optimiser.py	Wed Oct 07 15:55:52 2015 +0200
+++ b/optimiser.py	Thu Oct 08 10:42:30 2015 +0200
@@ -75,7 +75,7 @@
         # Get the colour with components scaled from 0 to 1, plus the inverted
         # component values.
 
-        rgb = square(scale(rgb))
+        rgb = extra(scale(rgb))
         rgbi = invert(rgb)
         pairs = zip(rgbi, rgb)
 
@@ -329,7 +329,11 @@
 
     # Experimental colour distribution modification.
 
-    square = "-2" in options and square or (lambda x: x)
+    use_square = "-2" in options
+    if use_square:
+        extra = square
+    else:
+        extra = (lambda x: x)
 
     # General output options.