From 210342a5bfff49c1f23df80cfb45544408bbdaa1 Mon Sep 17 00:00:00 2001
From: Marcin Kurczewski <mkurczew@gmail.com>
Date: Sun, 17 Nov 2013 14:20:59 +0100
Subject: [PATCH] Fixes to Markdown

- aa_bb cc_dd doesn't produce italics anymore
- asd@5.com doesn't produce link to post 5
- asd.com#anchor doesn't produce link to tag "anchor"
---
 src/CustomMarkdown.php | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/src/CustomMarkdown.php b/src/CustomMarkdown.php
index 94f77102..c147bec7 100644
--- a/src/CustomMarkdown.php
+++ b/src/CustomMarkdown.php
@@ -8,6 +8,16 @@ class CustomMarkdown extends \Michelf\Markdown
 		$this->span_gamut += ['doPosts' => 8];
 		$this->span_gamut += ['doTags' => 9];
 		$this->span_gamut += ['doAutoLinks2' => 29];
+
+		//fix italics/bold in the middle of sentence
+		$prop = ['em_relist', 'strong_relist', 'em_strong_relist'];
+		for ($i = 0; $i < 3; $i ++)
+		{
+			$this->{$prop[$i]}[''] = '(?:(?<!\*)' . str_repeat('\*', $i + 1) . '(?!\*)|(?<![a-zA-Z0-9_])' . str_repeat('_', $i + 1) . '(?!_))(?=\S|$)(?![\.,:;]\s)';
+			$this->{$prop[$i]}[str_repeat('*', $i + 1)] = '(?<=\S|^)(?<!\*)' . str_repeat('\*', $i + 1) . '(?!\*)';
+			$this->{$prop[$i]}[str_repeat('_', $i + 1)] = '(?<=\S|^)(?<!_)' . str_repeat('_', $i + 1) . '(?![a-zA-Z0-9_])';
+		}
+
 		parent::__construct();
 	}
 
@@ -43,7 +53,7 @@ class CustomMarkdown extends \Michelf\Markdown
 
 	protected function doPosts($text)
 	{
-		return preg_replace_callback('/@(\d+)/', function($x)
+		return preg_replace_callback('/(?:(?<!\w))@(\d+)/', function($x)
 		{
 			return $this->hashPart('<a href="' . \Chibi\UrlHelper::route('post', 'view', ['id' => $x[1]]) . '">') . $x[0] . $this->hashPart('</a>');
 		}, $text);
@@ -51,7 +61,7 @@ class CustomMarkdown extends \Michelf\Markdown
 
 	protected function doTags($text)
 	{
-		return preg_replace_callback('/#([a-zA-Z0-9_-]+)/', function($x)
+		return preg_replace_callback('/(?:(?<!\w))#([a-zA-Z0-9_-]+)/', function($x)
 		{
 			return $this->hashPart('<a href="' . \Chibi\UrlHelper::route('post', 'list', ['query' => $x[1]]) . '">') . $x[0] . $this->hashPart('</a>');
 		}, $text);