# $FreeBSD: releng/12.1/bin/sh/tests/expansion/length4.0 220655 2011-04-15 15:26:05Z jilles $ # The construct ${#?} is ambiguous in POSIX.1-2008: it could be the length # of $? or it could be $# giving an error in the (impossible) case that it # is not set. # We use the former interpretation; it seems more useful. : [ "${#?}" = 1 ] || echo '${#?} wrong' (exit 42) [ "${#?}" = 2 ] || echo '${#?} wrong'