bug#71777: 29.4; sexp-at-point in latex-mode when sexp contains ";"

[Gabriele Nicolardi]

    Il 26/06/24 22:25, Stefan Monnier ha scritto:
> Note that "test if a parenthesis in LaTeX (latex-mode) starts a balanced
> _expression_" is a kind of weird request, because it will only return nil
> if there's a missing close-paren but not if there are too many
> close-parens, i.e. it only detects one half of the imbalances.
>
>
>         Stefan
>     
    For my purposes it is enough.
    
    I need to write a function to interactively resize mathematical
    parentheses based on their content, such as "\left( ... \right)". So
    far, I have successfully used `sexp-at-point`, but this function
    does not recognize balanced expressions that contain ";" and only
    works with "(" and "[" but not with < etc..
    
    The `forward-sexp` function does not necessarily give an error if
    the parenthesis does not start a balanced _expression_. E.g.
    
    $( x + y ]$
    
    here "(" does not start a balanced _expression_ but `forward-sexp`
    does not return an error.
    
    Gabriele