Crystal: trailing conditionals v.s conditional blocks

[bararchy]

This wont compile

socket.close rescue nil if socket.is_a?(TCPSocket)

This will:

if socket.is_a?(TCPSocket)
  socket.close rescue nil
end

The first one returns:

undefined method 'close' for Nil (compile-time type is (TCPSocket | Nil)) (did you mean 'clone'?)

                      socket.close rescue nil if socket.is_a?(TCPSocket)

[RX14]

For reference, this works:

(socket.close rescue nil) if socket.is_a?(TCPSocket)

It's being parsed as

socket.close rescue (nil if socket.is_a?(TCPSocket))