From 8296fe1415c10cb3f159991d3a327fd9944a575c Mon Sep 17 00:00:00 2001
From: Charlie Somerville <charlie@charliesomerville.com>
Date: Sun, 18 Jan 2015 19:14:19 +1100
Subject: [PATCH] fix associativity parsing, hopefully for good this time

---
 acorn.js | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

diff --git a/acorn.js b/acorn.js
index 57c5245c77..e0d4dcf074 100644
--- a/acorn.js
+++ b/acorn.js
@@ -2515,17 +2515,9 @@
         var op = tokType;
         next();
         var start = storeCurrentPos();
-        if (op.rightAssociative) {
-          node.right = parseExprOp(parseMaybeUnary(), start, minPrec, noIn);
-        } else {
-          node.right = parseExprOp(parseMaybeUnary(), start, prec, noIn);
-        }
+        node.right = parseExprOp(parseMaybeUnary(), start, op.rightAssociative ? (prec - 1) : prec, noIn);
         finishNode(node, (op === _logicalOR || op === _logicalAND) ? "LogicalExpression" : "BinaryExpression");
-        if (op.rightAssociative) {
-          return node;
-        } else {
-          return parseExprOp(node, leftStart, minPrec, noIn);
-        }
+        return parseExprOp(node, leftStart, minPrec, noIn);
       }
     }
     return left;