Re: Adding % to `ispell-tex-arg-end'

[Eli Zaretskii <eliz@gnu.org>]

> From: Arash Esbati <esbati@gmx.de>
> Date: Sat, 09 Jul 2016 11:02:27 +0200
> 
> when I run Ispell over the following snippet, the second [htbp] is
> matched by Ispell:
> 
> \begin{figure}
>   [htbp]
>   \caption{foo}
> \end{figure}
> 
> \begin{figure}%
>   [htbp] % <== matched by Ispell
>   \caption{foo}
> \end{figure}
> 
> It is due to the regexp in `ispell-tex-arg-end':
> 
> (defun ispell-tex-arg-end (&optional arg)
>   "Skip across ARG number of braces."
>   (condition-case nil
>       (progn
> 	(while (looking-at "[ \t\n]*\\[") (forward-sexp))
> 	(forward-sexp (or arg 1)))
>     (error
>      (message "Error skipping s-expressions at point %d." (point))
>      (beep)
>      (sit-for 2))))
> 
> Would it be possible to add "%" to this function?
> 
> (defun ispell-tex-arg-end (&optional arg)
>   "Skip across ARG number of braces."
>   (condition-case nil
>       (progn
> 	(while (looking-at "[ \t\n%]*\\[") (forward-sexp))
> 	(forward-sexp (or arg 1)))
>     (error
>      (message "Error skipping s-expressions at point %d." (point))
>      (beep)
>      (sit-for 2))))

Maybe I'm missing something, but this solution doesn't look right to
me, because if we do that, any mis-spelling in the comment after %
will be skipped.  E.g., imagine this text:

\begin{figure}% mysspelled word
  [htbp] % <== matched by Ispell
  \caption{foo}
\end{figure}

We do want the "mysspelled" part highlighted, right?  I think your
suggestion makes Ispell skip it.