-
- $s = html_entity_decode($s, ENT_COMPAT, 'UTF-8');
-
- // Handles single newlines
- $s = str_replace("\r\n", "\n", $s);
- $s = str_replace("\n", " \n", $s);
- $s = str_replace("\r", " \n", $s);
-
- // Replace lonely stars in lines not starting with it with literal stars
- $s = preg_replace('/^([^\*]+)\*([^\*]*)$/im', '$1\*$2', $s);
-
- // The parser cannot handle paragraphs correctly
- $s = str_replace(['</p>', '<p>', '<p dir="ltr">'], ['<br>', '<br>', '<br>'], $s);
-
- // Escaping the hash tags
- $s = preg_replace('/\#([^\s\#])/', '#$1', $s);
-
- $s = Markdown::convert($s);
-
- $regexp = "/@\{(?:([^\}]+?); )?([^\} ]+)\}/";
- $s = preg_replace_callback($regexp, 'diaspora_mention2bb', $s);
-
- $s = str_replace('#', '#', $s);
-
- $s = html2bbcode($s);
-
- // protect the recycle symbol from turning into a tag, but without unescaping angles and naked ampersands
- $s = str_replace('♲', html_entity_decode('♲', ENT_QUOTES, 'UTF-8'), $s);
-
- // Convert everything that looks like a link to a link
- $s = preg_replace('/([^\]=]|^)(https?\:\/\/)([a-zA-Z0-9:\/\-?&;.=_~#%$!+,@]+(?<!,))/ism', '$1[url=$2$3]$2$3[/url]', $s);
-
- //$s = preg_replace("/([^\]\=]|^)(https?\:\/\/)(vimeo|youtu|www\.youtube|soundcloud)([a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[url=$2$3$4]$2$3$4[/url]',$s);
- $s = bb_tag_preg_replace('/\[url\=?(.*?)\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/url\]/ism', '[youtube]$2[/youtube]', 'url', $s);
- $s = bb_tag_preg_replace('/\[url\=https?:\/\/www.youtube.com\/watch\?v\=(.*?)\].*?\[\/url\]/ism' , '[youtube]$1[/youtube]', 'url', $s);
- $s = bb_tag_preg_replace('/\[url\=?(.*?)\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/url\]/ism' , '[vimeo]$2[/vimeo]' , 'url', $s);
- $s = bb_tag_preg_replace('/\[url\=https?:\/\/vimeo.com\/([0-9]+)\](.*?)\[\/url\]/ism' , '[vimeo]$1[/vimeo]' , 'url', $s);
-
- // remove duplicate adjacent code tags
- $s = preg_replace('/(\[code\])+(.*?)(\[\/code\])+/ism', '[code]$2[/code]', $s);
-
- // Don't show link to full picture (until it is fixed)
- $s = scale_external_images($s, false);
-
- return $s;