From a8b5a611e9663f63ea232572abaa213c7712d418 Mon Sep 17 00:00:00 2001
From: Robert Sesek <rsesek@bluestatic.org>
Date: Tue, 3 Apr 2007 19:31:17 +0000
Subject: [PATCH] Added support for horizontal rules in Markdown

---
 Markdown.php | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/Markdown.php b/Markdown.php
index 0526275..1a02235 100644
--- a/Markdown.php
+++ b/Markdown.php
@@ -112,6 +112,7 @@ class BSMarkdown
 		$this->_convertHardLineBreaks();
 		$this->_convertAtxHeaders();
 		$this->_convertSetextHeaders();
+		$this->_convertHorizontalRules();
 		$this->_formatParagraphs();
 		$this->text = $this->_expandHtmlBlocks($this->text);
 		
@@ -229,6 +230,22 @@ class BSMarkdown
 		return $hash;
 	}
 	
+	// ###################################################################
+	/**
+	* Converts three stars or dashes (optionally separated by spaces) into
+	* a horizontal rule.
+	*/
+	private function _convertHorizontalRules()
+	{
+		$hash = md5('<hr />' . microtime());
+		$count = 0;
+		$this->text = preg_replace('/((-|\*) ?){3,}/', $hash, $this->text, -1, $count);
+		if ($count > 0)
+		{
+			$this->htmlBlockMap[$hash] = '<hr />';
+		}
+	}
+	
 	// ###################################################################
 	/**
 	* Wraps blocks into paragraphs
-- 
2.22.5