Need Context menu option `Render As Plain Source` in V3 (or V3.2+)

[jabobian]

Is your feature request related to a problem? Please describe.
I'm always frustrated when need to copy paragraphs with inline equations.
For MathJax v2.7, there is an option Render As Plain Source, so I can duplidate the webpage, and show the content in plain source for easy copy equations, while keep the original webpage showing equations rendered as CHTML.

For MathJax v3.2, it is now easier to copy a single equation by Copy > Latex command, but it becomes hard for copy paragraphs.

Describe the solution you'd like
Context menu option Render As Plain Source in V3

[dpvc]

As a workaround for now, you can do

MathJax.startup.document.state(0, true);

in the browser's developer console and that will remove the typeset math and restore the original notation (much like the "Plain Source" renderer did).

To get back the typeset version, do

MathJax.startup.document.clear();
MathJax.typesetPromise();

You could probably make bookmarklets for these, so they would be easy to access.

[jabobian]

@dpvc Thank you very much. I use TamperMonkey script with menu items to emulate bookmarklet, it works like a charm.