Folks,
I'm way overdue for changing my habit of using [[ ]] and replacing it
with use of (( )) where appropriate. But as I'm trying to rewrite
if [[ $# -gt 1 ]] && [[ -t 0 && -t 1 ]]; then
into something like
if (($# > 1 && -t 0 && -t 1)); then
I see that operators like -n, -z, -t, -r, -x, etc are not accepted. Am I
missing something? Can [[ ]] or $(( )) or anything similar be nested
inside these expressions?
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