Update to last Parsedown

[costasdroid]

I could not resolve some issues like midword underscore (as f(x_1)+f(x_2)) for equations. Tested the latest Parsedown markdown parser and worked like a charm.

[svivian]

Cool, that seems like a good alternative to the old parser. Will take a closer look when I can and merge.

Do you know how well it complies to the CommonMark spec? Also do you know what is the best modern version of the Pagedown (JavaScript) component?

[costasdroid]

According to their readme and their tests, is somewhat 57% compilant:

"It passes most of the CommonMark tests. Most of the tests that don't pass deal with cases that are quite uncommon. Still, as CommonMark matures, compliance should improve."

The funny thing is that the js code worked like a charm in the preview window. They have different regExp pattern!

Maybe an option in admin panel for preffered parser (as default the pagedown)?

[costasdroid]

Is there any intention to drop down the php markdown and instead get the plain text entry and parse it only with the js?

Here is a convenient comparison between markdown parsers.

Babelmark

I found an unwanted transform in parsedown regarding maths so I will keep on searching for the "best" parser