| 0 | pass | Identity function |
| 1 | pass | Too many args |
| 2 | pass | Too few args |
| 3 | pass | Positional args |
| 4 | pass | named args |
| 5 | pass | Named args with ...rest |
| 6 | pass | Spread/splat of named args: f(...more) |
| 7 | pass | Multiple spreads |
| 8 | pass | Proc-style return in a func is error |
| 9 | pass | Typed return in a proc is error |
| 10 | pass | Redefining functions is not allowed (with shopt -u redefine_proc_func) |
| 11 | pass | Redefining functions is allowed (with shopt -s redefine_proc_func) |
| 12 | pass | Functions cannot redefine readonly vars (even with shopt -s redefine_proc_func) |
| 13 | pass | Functions can redefine non-readonly vars |
| 14 | pass | Vars cannot redefine functions (even with shopt -s redefine_proc_func) |
| 15 | pass | Multiple func calls |
| 16 | pass | Undefined var in function |
| 17 | pass | Param binding semantics |
| 18 | pass | Recursive functions |
| 19 | pass | Recursive functions with LRU Cache |
| 20 | pass | Varadic arguments, no other args |
| 21 | pass | Varadic arguments, other args |
| 22 | pass | Varadic arguments, too few args |
| 23 | pass | Userland max |
| 24 | pass | Functions share a namespace with variables |
| 25 | pass | We can store funcs in dictionaries |
| 26 | pass | Functions cannot be nested |
| 27 | pass | Functions can be shadowed |
| 28 | pass | Function names cannot be redeclared |
| 29 | pass | Functions cannot be mutated |