| case | bash | mksh | zsh | osh | description |
| 0 | pass | pass | pass | pass | (( )) result |
| 1 | pass | pass | pass | pass | negative number is true |
| 2 | pass | pass | pass | pass | (( )) in if statement |
| 3 | pass | pass | pass | pass | (( )) |
| 4 | pass | pass | ok | pass | (( )) with arrays |
| details | |||||
| 5 | pass | pass | pass | pass | (( )) with error |
23 passed, 1 ok, 0 known unimplemented, 0 known bugs, 0 failed, 0 skipped
| zsh | 4 (( )) with arrays stdout: 9stderr: |