From 3b3fb72ce376c0573f459af4341df8a7736e7d26 Mon Sep 17 00:00:00 2001
From: Scott Taylor <scott.c.taylor@mac.com>
Date: Tue, 17 Jun 2014 18:07:14 +0000
Subject: [PATCH] Add unit tests to confirm that `---` is properly converted to
 `&#8212;` by `wptexturize()` where appropriate.

Props miqrogroove.
Fixes #28483.

Built from https://develop.svn.wordpress.org/trunk@28763


git-svn-id: http://core.svn.wordpress.org/trunk@28576 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-includes/formatting.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/wp-includes/formatting.php b/wp-includes/formatting.php
index ab3be7a76c..d71924fdd1 100644
--- a/wp-includes/formatting.php
+++ b/wp-includes/formatting.php
@@ -274,6 +274,8 @@ function _wptexturize_pushpop_element($text, &$stack, $disabled_elements, $openi
 
 			array_push($stack, $matches[1]);
 		}
+	} elseif ( 0 == count( $stack ) ) {
+		// Stack is empty. Just stop.
 	} else {
 		// Closing? Check $text+2 against disabled elements
 		$c = preg_quote($closing, '/');