MathQuill and set operators

Question

When using MathQuill one needs to type \nsub to get the ⊈ symbol. The latex you get back is \not\subset, which is fine.

But when you try to set back the same \not\subset expression to the MathQuill field, you get a different result : \neg\subset, which translates to a different rendering.

The problem can be reproduced directly on the MathQuill page (http://mathquill.com/) using the browser console :

Any ideas on how to handle or work around this ?

Answer 1

MathQuill will accept \nsub while typing, but also \notsubset, which got me to a simple find-and-replace solution, which does not require any other code change.

Not the best, but it works; the only downside is that the list of text replacements is fixed; the set operators are the one I found; could be more.

// special math pre-processing
var mathFix = {
    "\\not\\subset" : "\\notsubset",
    "\\not\\supset" : "\\notsupset"
}
                        
var mathTextFixed = '<your latex here>';
Object.keys(mathFix).forEach(function(t1) {
    mathTextFixed = mathTextFixed.replace(t1, mathFix[t1]);
});

mathField.latex(mathTextFixed);