CODEWITHSUNDEEP
javascriptmathmathjax
Andry
Andry

Reputation: 16845

How to tell MathJax to use an alternative syntax for subscripts?

I have a problem with my blog. When writing posts I can also add math using MathJax. I also have a little markup language of mine where I can handle italic and bold text. It happens that the syntax for italic collides with the MathJax one's for subscript.

So, if I write in a port the following:

My cat was doing this strange sound: _Prrrrrr_.

The text between underscores is redered with a span tag using italic style.

But in MathJax using underscores means having subscripts. Sometimes I have problems of course. The point is that first my markup language is handled, then Mathjax can run.

Is there a way to tell MathJax to make subscripts and superscripts without using underscores but an alternative syntax?

Thankyou

Upvotes: 4

Views: 805

Answers (2)

g t
g t

Reputation: 7463

I found escaping the underscores with a backslash helped, like this:

...strange sound: \_Prrrrrr\_.

But this did cause some parsers to render things incorrectly.

However, if you also define '\_' as a macro which just outputs '_', then it all seems to work.

To do this in MathJax:

MathJax.Hub.Config({TeX: {Macros: { '\_': ['_'] }}, /* rest of config here... */ });

To do this in Katex, I changed katex_config.js to:

module.exports = {
  macros: { '\\_': '_' }
}

Upvotes: 1

Andry
Andry

Reputation: 16845

There is a way. Using Macros as described here: Configure Tex in MathJax. By setting something like this: 

MathJax.Hub.Config({TeX: {Macros:{subscript:['_{#1}',1],superscript:['^{#1}',1]}}});

The system (MathJax) will substitute this stuff with the underscore and then parse it, my problem is actually solved like this!

Upvotes: 1

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