hide-show mode: unbalanced parentheses

[Ryo]

Hi all,

hs-hide-all (in hs-minor-mode, a "hide-show" mode) gets stuck
with "unbalanced parentheses" in my latex source. Some unbalanced
parens and brackets are necessary.  For example,

   \@ifnextchar [{\@tauZero}{\tau_{\!\!o}}

Notice the unmatched "[" .  Or, you sometimes write
"1) blah blah; 2) blah blah; . . . ."

Is there any fix?  Or is there any alternative to hs-minor-mode?
I could imagine that folding is possible on the basis of sectioning
commands like "\section".

Regards,
Ryo