6 if ! false; then false; echo $?; fi
8 if ! false; then ! false; echo $?; fi
11 for a in ! a b c; do echo $a; done
12 for a in ! a b c; do ! printf "$a "; echo $?; done
13 test x"$PRINTF" = x"" && exit 1
14 for a in ! a b c; do ! "$PRINTF" "$a "; echo $?; done
15 for a in ! a b c; do ! printf "$a " | false; echo $?; done
16 for a in ! a b c; do ! printf "$a " | true; echo $?; done
17 for a in ! a b c; do ! { printf "$a " | false; }; echo $?; done
18 for a in ! a b c; do ! { printf "$a " | true; }; echo $?; done