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[REBOL] Re: Changing prompt without feedback

From: jeff:rebol at: 13-Nov-2000 22:48

Howdy, Spliff:
>> system/console/prompt: "new-prompt->" ()
new-prompt-> The empty paren creates an unset! which does not echo a result on the console. (The empty paren to create an unset! is a trick I learned from Ladislav. (-:) The last thing evaluated at the prompt or in a script is what is shown as the visible result on the console, unless it is unset!. Other REBOL functions return UNSET as well, like PRIN, HELP, or, more generally, functions that have no return value: unset? do func [] [] == true which could also be written: DO DOES [] system/console/prompt: "new-prompt->" do does [] -jeff