Parsing a program in an equation "works"

[c3d]

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Parsing a program or a list inside an equation gives a malformed equation.

[c3d]

Per-se, it is not really a problem that we can add an array or a list (or for that matter a program) inside an algebraic object. For example, an expression like DET([[1 2 3][4 5 6][7 8 9]) might make sense.

At the moment, this does not work. We get an Unterminated error.

Also, the editor does not let us insert a space inside the brackets. Instead, we get a semi-colon.