_MarkdownExtra_TmpImpl::doFencedCodeBlocks PHP Méthode

    protected function doFencedCodeBlocks($text)
    {
        #
        # Adding the fenced code block syntax to regular Markdown:
        #
        # ~~~
        # Code block
        # ~~~
        #
        $less_than_tab = $this->tab_width;
        $text = preg_replace_callback('{
				(?:\\n|\\A)
				# 1: Opening marker
				(
					(?:~{3,}|`{3,}) # 3 or more tildes/backticks.
				)
				[ ]*
				(?:
					\\.?([-_:a-zA-Z0-9]+) # 2: standalone class name
				|
					' . $this->id_class_attr_catch_re . ' # 3: Extra attributes
				)?
				[ ]* \\n # Whitespace and newline following marker.
				
				# 4: Content
				(
					(?>
						(?!\\1 [ ]* \\n)	# Not a closing marker.
						.*\\n+
					)+
				)
				
				# Closing marker.
				\\1 [ ]* (?= \\n )
			}xm', array($this, '_doFencedCodeBlocks_callback'), $text);
        return $text;
    }