1# POSIX leaves the effect of NUL bytes in command substitution output 2# unspecified but we have always discarded them. 3 4failures=0 5 6check() { 7 if [ "$2" != "$3" ]; then 8 printf "Failed at line %s: got \"%s\" expected \"%s\"\n" "$1" "$2" "$3" 9 : $((failures += 1)) 10 fi 11} 12 13fmt='\0a\0 \0b\0c d\0' 14assign_builtin=$(printf "$fmt") 15check "$LINENO" "$assign_builtin" "a bc d" 16assign_pipeline=$(printf "$fmt" | cat) 17check "$LINENO" "$assign_pipeline" "a bc d" 18set -- $(printf "$fmt") $(printf "$fmt" | cat) "$(printf "$fmt")" "$(printf "$fmt" | cat)" 19IFS=@ 20splits="$*" 21check "$LINENO" "$splits" "a@bc@d@a@bc@d@a bc d@a bc d" 22 23[ "$failures" = 0 ] 24