Re: select syntax violates the POLA

[Greywolf]

On 4/4/2021 23:13, konsolebox wrote:
> On Sat, Apr 3, 2021 at 1:09 AM Robert Elz <kre@munnari.oz.au> wrote:
> >    |  [[ ]] and (( )) are a form of reserved words themselves
> >
> > Those are bash specials, and I am fairly sure that (( and )) will be
> > operators, not reserved words (they cannot really be the latter, as ( and
> > ) are operators) and I suspect that [[ and ]] might be as well, but there
> > I'm not sure.   operators and reserved words are quite different things.
> > Operators (unquoted) are recognised as themselves wherever they appear.
>
> Stop suspecting and read the source code.  Look at parse.y starting at
> line 2150.  They are labeled as "Reserved words".

[[ and ]] behave like reserved words requiring whitespace between
themselves and their operands.  (( and )) do not carry that restriction;
within (( )), neither do any of */%^&|+- (or their respective OP=),
nor == || && !.  This effectively classifies (( )) as operators.

But we've drifted considerably afield.

                                --*greywolf;