From f55b4cd8b68c5004f9027f73d25d85010ef74ff7 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 25 Dec 2009 13:40:57 -0800
Subject: [PATCH] ForBody is really the ForSource

---
 lib/coffee_script/grammar.y | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/coffee_script/grammar.y b/lib/coffee_script/grammar.y
index 5dd42d3b..99034a2a 100644
--- a/lib/coffee_script/grammar.y
+++ b/lib/coffee_script/grammar.y
@@ -318,15 +318,17 @@ rule
   # Array comprehensions, including guard and current index.
   For:
     Expression FOR
-      ForVariables ForBody            { result = ForNode.new(val[0], val[3][0], val[2][0], val[3][1], val[2][1]) }
+      ForVariables ForSource          { result = ForNode.new(val[0], val[3][0], val[2][0], val[3][1], val[2][1]) }
   ;
 
+  # An array comprehension has variables for the current element and index.
   ForVariables:
     IDENTIFIER                        { result = val }
   | IDENTIFIER "," IDENTIFIER         { result = [val[0], val[2]] }
   ;
 
-  ForBody:
+  # The source of the array comprehension can optionally be filtered.
+  ForSource:
     IN PureExpression "."             { result = [val[1]] }
   | IN PureExpression
     IF Expression "."                 { result = [val[1], val[3]] }