Re: select syntax violates the POLA

[konsolebox]

On Fri, Apr 2, 2021 at 3:03 PM Andreas Schwab <schwab@linux-m68k.org> wrote:
>
> On Apr 02 2021, Robert Elz wrote:
>
> >     Date:        Thu, 01 Apr 2021 21:33:31 -0400
> >     From:        worley@alum.mit.edu (Dale R. Worley)
> >     Message-ID:  <874kgpqxlg.fsf@hobgoblin.ariadne.com>
> >
> >   | I was going to ask why "else {" works,
> >
> > Wrong question.  That one is easy.  What follows
> > 'else' is a list and the simplest form of a list
> > is a simple command, which starts with a command
> > word, so reserved words are always going to work
> > there, even without the "follows a reserved word'
> > rule.
> >
> > The right question would be why '} else' works.
>
> The two case are not really different, they are covered by the same
> rule:
>
>     This recognition shall only occur when none of the characters is
>     quoted and when the word is used as:
>
>     * The first word following one of the reserved words other than
>       case, for, or in
>
That's not a rule but a special compromise.  [[ ]] and (( )) are a
form of reserved words themselves just like () and {} as they can be
used multi-line but they aren't allowed to be adjacent to else et al
without a semicolon.  [[ ]], (( )), {}, and () are practically just
commands with first-class parsing that consistently have to end with a
semicolon if followed by another reserved word or command.


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