--- /dev/null
+# $FreeBSD$
+IFS=,
+
+SPECIAL="break abc,\
+ continue abc,\
+ .,
+ exit abc,
+ export -x,
+ readonly -x,
+ return abc,
+ set -z,
+ shift abc,
+ trap -y,
+ unset -y"
+
+UTILS="alias -y,\
+ cat -z,\
+ cd abc def,\
+ command break abc,\
+ expr 1 +,\
+ fc -z,\
+ getopts,\
+ hash -z,\
+ jobs -z,\
+ printf,\
+ pwd abc,\
+ read,\
+ test abc =,\
+ ulimit -z,\
+ umask -z,\
+ unalias -z,\
+ wait abc"
+
+# Special built-in utilities must abort on an option or operand error.
+set -- ${SPECIAL}
+for cmd in "$@"
+do
+ ${SH} -c "${cmd}; exit 0" 2>/dev/null && exit 1
+done
+
+# Other utilities must not abort.
+set -- ${UTILS}
+for cmd in "$@"
+do
+ ${SH} -c "${cmd}; exit 0" 2>/dev/null || exit 1
+done