bug#6591: 24.0.50; incorrect doc for `catch'

[Eli Zaretskii <eliz@gnu.org>]

> From: "Drew Adams" <drew.adams@oracle.com>
> Cc: <6591@debbugs.gnu.org>
> Date: Sat, 10 Jul 2010 21:21:04 -0700
> 
> If you now say that you are open to looking
> for another syntax to use, then I would return to my initial suggestion (but I
> won't argue that it is the only good approach): use `...' to mean repetitions of
> whatever it follows, in this case a sexp, and thus write (catch TAG FORM...).
> Introducing a grouping syntax operator (e.g. braces: {}), so the scope of the
> ellipsis can be controlled - e.g. (A B {C D}... E...) meaning that C D repeats
> and E repeats.

Using FORM... is okay, but will need more extensive changes, so I'd
rather not do it.  I'd like to simply remove the dots after BODY, and
explain in the text that BODY can consist of one or more forms.

Does anyone see any reason why keeping the dots in BODY... will have
some didactical importance?  Richard? Stefan? Yidong?