Path: utzoo!attcan!uunet!husc6!bloom-beacon!tut.cis.ohio-state.edu!mailrus!ames!elroy!mahendo!wlbr!hacgate!luna!djnowak
From: djnowak@luna.UUCP (David Nowak)
Newsgroups: comp.sys.mac.hypercard
Subject: Repeat until <syntax> ?
Message-ID: <172@luna.UUCP>
Date: 8 Sep 88 02:38:54 GMT
Organization: Hughes Aircraft Company, El Segundo  CA
Lines: 14

I was recently writing a script to import and edit text data on the fly and
wished to set up a loop that would get a line of data, process it and continue
to do this until the end of the textfile.  Since my data would be in the
variable "it" I guessed that one could do this with the construct:

repeat until it is empty
   <get at line and process it commands>
end repeat

However, Hypertalk choked after the "it" in the "it is empty" expression.
Apparently "it is empty" does not evaluate to <true/false>.  Why not?

Dave Nowak
djnowak@luna.dpl.scg.hac.com