On 2/20/15 3:52 PM, Dan Douglas wrote:
> IMO bash is exactly correct. I don't know how this could be "fixed" in
> a way that would satisfy people without changing something very
> fundamental. If you disable the initial expansion to `(())', then
> `(($x))' wouldn't work (because arithmetic evaluation doesn't itself
> evaluate parameter expansions). However if you disabled evaluating
> parameter expansions during variable resolution (for array indexes)
> then you would be stuck with exactly the above ksh problem.
Yeah, exactly. I could potentially avoid the double-expansion issue
by adding flags and other conditional beahvior, but I'm afraid it
would be fragile and inconsistent. The backwards compatibility issue
would come up either way.
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU [email protected] http://cnswww.cns.cwru.edu/~chet/
