Re: Problems with do:

You could do something like
[aFileStream atEnd] whileFalse: [line := aFileStream nextLine.
Transcipt show: line: cr.]

Alternatively, you could convert your stream of characters into a
stream of lines.  I described something similar in
http://wiki.cs.uiuc.edu/PatternStories/FunWithStreams but it created a
stream of words instead of a stream of lines.  Read that, and you
should be able to make a LineStream pretty easily.

-Ralph Johnson