Re: address@hidden: tex-mode: too many _ (underscores) interpreted as subscripts]

[Richard Stallman]

    There is an infinite number of constructs which are not supposed to be
    used in math, e.g. itemize environments or sectioning macros.  But I
    haven't found a way to generalize those constructs.  And checking for
    an arbitrary pick of such commands doesn't seem to be the best
    solution.

Since these are used only to save time, it is not a problem
if the list is incomplete.  Let's add some additional common ones,
and then the function texmathp will usually run faster.