=== modified file 'common.zsh'
--- common.zsh	2017-12-01 00:15:43 +0000
+++ common.zsh	2017-12-01 00:10:16 +0000
@@ -146,7 +146,7 @@
 }
 
 exit-if-unchanged() {
-	if is-unchanged; then
+	if ! is-unchanged; then
 		cp $FILE $OUT
 		exit 0
 	else