PHP Markdown Lib 1.6.0 (23 Dec 2015)

• For fenced code blocks in Markdown Extra, can now set a class name for the code block's language before the special attribute block. Previously, this class name was only allowed in the absence of the special attribute block.

• Added a code_block_content_func configuration variable which takes a function that will convert the content of the code block to HTML. This is most useful for syntax highlighting. For fenced code blocks in Markdown Extra, the function has access to the language class name (the one outside of the special attribute block). Credits to Mario Konrad for providing the implementation.

• The curled arrow character for the backlink in footnotes is now followed by a Unicode variant selector to prevent it from being displayed in emoji form on iOS. Note that in older browsers the variant selector is often interpreted as a separate character, making it visible after the arrow. So there is now a also a fn_backlink_html` configuration variable that can be used to set the link text to something else. Credits to Dana for providing the implementation.

• Fixed an issue in MarkdownExtra where long header lines followed by a special attribute block would hit the backtrack limit an cause an empty string to be returned.