python-markdown-discuss

[Python-markdown-discuss] Treating anything between $ signs as raw text

[Guy R. <guy...@gm...>]

Hi,

I want to use python-markdown together with MathJax (similar to the way
equations are implemented in StackExchange sites). In order to do so, I
need to make the parser keep everything between $ (dollar) signs as is,
ignoring backspaces and other special characters.

Is there a simple way to do it?

Thanks,

Guy

----
http://www.guyrutenberg.com

Re: [Python-markdown-discuss] Treating anything between $ signs as raw text

[Waylan L. <way...@ic...>]

Guy,

 

There are a few different approaches you could take. First, did you check that an extension doesn’t already exist that meets your needs? See the wiki: https://github.com/waylan/Python-Markdown/wiki/Third-Party-Extensions

 

Or could you put your equations in `code spans`?

 

If not, you could easily create your own extension using our extension API: https://pythonhosted.org/Markdown/extensions/api.html

 

I expect you would be creating an inlinePattern. I would look at the `BacktickPattern` (which processes inline code) for guidance: https://github.com/waylan/Python-Markdown/blob/master/markdown/inlinepatterns.py#L256  The `BacktickPattern` just uses an `AtomicString` to tell markdown not to process the string any further.  However, note that the entire string must be an Atomic string. So if your equation in imbedded in the middle of a paragraph with other markdown syntax, you would need to wrap your string in a tag (perhaps `<span>`) to preserve the AtomicString and allow the rest of the paragraph to be parsed as Markdown text.

 

The following tutorials might be a gentler introduction to creating your own extensions:

http://achinghead.com/python-markdown-adding-insert-delete.html

http://achinghead.com/python-markdown-changing-bold-italics.html

 

Hope that helps.

 

Waylan

 

From: Guy Rutenberg [mailto:guy...@gm...] 
Sent: Tuesday, September 16, 2014 4:01 PM
To: pyt...@li...
Subject: [Python-markdown-discuss] Treating anything between $ signs as raw text

 

Hi,

I want to use python-markdown together with MathJax (similar to the way equations are implemented in StackExchange sites). In order to do so, I need to make the parser keep everything between $ (dollar) signs as is, ignoring backspaces and other special characters.

Is there a simple way to do it?

Thanks,

Guy

----

http://www.guyrutenberg.com

Re: [Python-markdown-discuss] Treating anything between $ signs as raw text

[Dmitry S. <mi...@gm...>]

Hi,

On Wed, Sep 17, 2014 at 12:00 AM, Guy Rutenberg <guy...@gm...> wrote:
> I want to use python-markdown together with MathJax (similar to the way
> equations are implemented in StackExchange sites). In order to do so, I need
> to make the parser keep everything between $ (dollar) signs as is, ignoring
> backspaces and other special characters.
>
> Is there a simple way to do it?

In PyMarkups there is some code that works with MathJax:

https://github.com/mitya57/pymarkups/blob/master/markups/markdown.py#L90
https://github.com/mitya57/pymarkups/blob/master/markups/markdown.py#L148

You can reuse or copy that code.

Unlike the mathjax extension listed on the wiki page, my code converts
$...$ blocks to an actual <script> element itself, instead of relying
on MathJax's tex2jax extension to do that. This is a more safe way
(i.e. supports escaping), and it also supports other delimiters (like
\[...\], \(...\) and \begin{}...\end{}).

--
Dmitry Shachnev