| case | dash | bash | mksh | osh | description |
| 0 | pass | pass | pass | pass | IFS is scoped |
| 1 | pass | pass | pass | pass | Tilde sub is not split, but var sub is |
| 2 | pass | pass | pass | pass | Word splitting |
| 3 | pass | pass | pass | pass | Word splitting 2 |
| 4 | pass | pass | pass | pass | $* |
| 5 | pass | pass | pass | pass | "$*" |
| 6 | pass | pass | pass | pass | $@ |
| 7 | pass | pass | pass | pass | "$@" |
| 8 | pass | pass | pass | pass | empty $@ and $* is elided |
| 9 | pass | pass | pass | pass | unquoted empty arg is elided |
| 10 | pass | pass | pass | pass | unquoted whitespace arg is elided |
| 11 | pass | pass | pass | pass | empty literals are not elided |
| 12 | pass | pass | pass | pass | no splitting when IFS is empty |
| 13 | pass | pass | pass | pass | default value can yield multiple words |
| 14 | pass | pass | pass | pass | default value can yield multiple words with part joining |
| 15 | pass | pass | pass | pass | default value with unquoted IFS char |
| 16 | pass | pass | pass | pass | TODO |
68 passed, 0 ok, 0 known unimplemented, 0 known bugs, 0 failed, 0 skipped