From daf49a0089b9f5e342d3f6ee077d7e284eeb5c1c Mon Sep 17 00:00:00 2001
From: John MacFarlane <jgm@berkeley.edu>
Date: Tue, 13 Jan 2015 22:43:21 -0800
Subject: blocks.js - avoid an implicit boolean cast.

---
 js/lib/blocks.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'js')

diff --git a/js/lib/blocks.js b/js/lib/blocks.js
index 86064b5..d53a82f 100644
--- a/js/lib/blocks.js
+++ b/js/lib/blocks.js
@@ -65,10 +65,10 @@ var detabLine = function(text) {
 // Return index of match or -1.
 var matchAt = function(re, s, offset) {
     var res = s.slice(offset).match(re);
-    if (res) {
-        return offset + res.index;
-    } else {
+    if (res === null) {
         return -1;
+    } else {
+        return offset + res.index;
     }
 };
 
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