From 6878d19a6aff2a554fcadc03e6c56bf1e329262d Mon Sep 17 00:00:00 2001
From: Nathan Sobo <nathan@github.com>
Date: Mon, 6 Aug 2012 18:27:39 -0600
Subject: [PATCH] OnigRegExp.getCaptureTree does not include empty child
 captures

---
 src/stdlib/onig-reg-exp.coffee | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/stdlib/onig-reg-exp.coffee b/src/stdlib/onig-reg-exp.coffee
index 36407690f..42cc9960b 100644
--- a/src/stdlib/onig-reg-exp.coffee
+++ b/src/stdlib/onig-reg-exp.coffee
@@ -9,7 +9,8 @@ OnigRegExp.prototype.getCaptureTree = (string, startPosition) ->
 
     childCaptures = []
     while startPositions[0] < endPosition
-      childCaptures.push(buildCaptureTree(captures, startPositions, totalCaptures))
+      subtree = buildCaptureTree(captures, startPositions, totalCaptures)
+      childCaptures.push(subtree) if subtree.text.length
 
     tree.captures = childCaptures if childCaptures.length
     tree