On 08/01/11 08:21, Eric Blake wrote: >>>> && ( (unset $as_var) || exit 1)>/dev/null 2>&1&& unset $as_var || : >>> ... >>> It's not a bug in pdksh - POSIX was recently reworded to allow (( to >>> introduce arithmetic parsing on any shell that wants to provide it as an extension. > http://austingroupbugs.net/view.php?id=217 Thanks for mentioning that; I didn't know it. However, from that URL it still appears that pdksh is buggy. The new rule says that '((FOO))' is special if FOO is a syntactically valid arithmetic expression. But in the above example, the expression '((unset $asvar) ...)' surely would not be syntactically valid to pdksh, and therefore '((' should not be special there. _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx https://lists.gnu.org/mailman/listinfo/autoconf
