select sub-region of mathField that matches latex string?

what is the most straightforward way to search for a latex string (e.g. \frac{2}{4} ) in an active MathField and if found, select the occurrence of subexpression in the mathField. I can think of a way of creating a DOM-detached mathField just with $$\frac{2}{4}$$ and then doing a deep comparison of the resulting spans with the existing active mathField, but that sounds painful. Also, not clear how i would select a specific portion programmatically after the span section is found. search probably needs to be done on MathAtom internal representation, but those traversal functions are not in documentation.

Any help would be greatly appreciated. i’m working on a speech driven selection and this is a key missing component.

[arnog]

Yes, the current template type (string | RegExp) will be expanded to include a MathJson expression. Same thing for the replacement pattern, you will be able to return either a Latex string or a MathJson expression.

[zoranpopovic]

@arnog that’s awesome. Things will be so much cleaner with this. thanks for adding it.