Issue #19094 has been updated by ioquatix (Samuel Williams). PR: https://github.com/ruby/ruby/pull/7484 ---------------------------------------- Feature #19094: `sleep(nil)` vs `sleep()` and replicating the default implementation. https://bugs.ruby-lang.org/issues/19094#change-102277 * Author: ioquatix (Samuel Williams) * Status: Open * Priority: Normal * Assignee: ioquatix (Samuel Williams) ---------------------------------------- ```

sleep(nil) (irb):1:in `sleep': can't convert NilClass into time interval (TypeError)

However, I feel that this makes implementing a compatible sleep method a little difficult.

```ruby
def sleep(time = nil)
  if time
    sleep_some(time)
  else
    sleep_forever
  end
end

Can we consider allowing `sleep(nil)` and `sleep(false)` to be the same as `sleep()` to simplify this behaviour? Otherwise, it's hard to proxy (e.g. fiber scheduler, or even just a plain old variable argument). e.g. ```ruby class Sleeper def initialize(time = nil) @time = time end def sleep Kernel::sleep(@time) # Hard to get the behaviour of `sleep()` here without explicitly handling/checking. end end ``` -- https://bugs.ruby-lang.org/