Fix PHP preg_match(): Compilation failed: invalid range in character class at offset

bbcode-filter.inc

@@ -237,15 +237,15 @@ function _bbcode_filter_process(&$body, $settings) {
     // Flash animations and other special effects
     '#\[flash=(\d+)x(\d+)(?::\w+)?\]([\w:;&,~%+!=@\/\.\-\#\?]+)\[/flash(?::\w+)?\]#si' => '<object type="application/x-shockwave-flash" data="\\3" width="\\1" height="\\2"><param name="movie" value="\\3" /></object>',
     // Acronyms & abbreviations - show description when mouse moves over tag
-    '#\[acronym=([\w\s-,\.]+)(?::\w+)?\](.*?)\[/acronym(?::\w+)?\]#si' => '<acronym title="\\1">\\2</acronym>',
-    '#\[abbr=([\w\s-,\.]+)(?::\w+)?\](.*?)\[/abbr(?::\w+)?\]#si' => '<abbr title="\\1">\\2</abbr>',
+    '#\[acronym=([\w\s\-,\.]+)(?::\w+)?\](.*?)\[/acronym(?::\w+)?\]#si' => '<acronym title="\\1">\\2</acronym>',
+    '#\[abbr=([\w\s\-,\.]+)(?::\w+)?\](.*?)\[/abbr(?::\w+)?\]#si' => '<abbr title="\\1">\\2</abbr>',
     // Quoting with or without specifying the source
     '#\[quote(?::\w+)?\]#i' => '<div class="bb-quote">' . $quote_text . '<blockquote class="bb-quote-body">',
     '#\[quote=(?:&quot;|"|\')?(.*?)["\']?(?:&quot;|"|\')?\]#i' => '<div class="bb-quote"><b>' . $quote_user . '</b><blockquote class="bb-quote-body">',
     '#\[/quote(?::\w+)?\]#si' => '</blockquote></div>',
     // Links to popular sites
-    '#\[google(?::\w+)?\]([\w\s-]+?)\[/google(?::\w+)?\]#si' => '<a href="http://www.google.com/search?q=\\1">\\1</a>',
-    '#\[wikipedia(?::\w+)?\]([\w\s-]+?)\[/wikipedia(?::\w+)?\]#si' => '<a href="http://www.wikipedia.org/wiki/\\1">\\1</a>',
+    '#\[google(?::\w+)?\]([\w\s\-]+?)\[/google(?::\w+)?\]#si' => '<a href="http://www.google.com/search?q=\\1">\\1</a>',
+    '#\[wikipedia(?::\w+)?\]([\w\s\-]+?)\[/wikipedia(?::\w+)?\]#si' => '<a href="http://www.wikipedia.org/wiki/\\1">\\1</a>',
     '#\[youtube\]([0-9a-zA-Z_\-]+)\[/youtube\]#si' => '<iframe width="425" height="366" src="//www.youtube.com/embed/\\1" frameborder="0" allowfullscreen></iframe>',
     // Table tags
     '#\[table\](.+?)\[/table\]#si' => '<table class="bb-table">\\1</table>',