readline_completion_function

• Return type changed: bool to true

- readline_completion_function(callable $callback): bool
+ readline_completion_function(callable $callback): true

• Return type added: bool
• Parameter name of parameter #1 changed: $funcname to $callback
• Parameter type added for parameter #1 ($callback): callable

- readline_completion_function($funcname)
+ readline_completion_function(callable $callback): bool