Re: How to avoid new line from stream

On Fri, Aug 3, 2018 at 4:25 AM, Jean Louis <[email protected]> wrote:
> I am trying to solve the problem here that if
> there is no ending newline, my function is still
> printing it.
>
>     (setf result (format nil "~{~A~%~}" (loop for line = (read-line in nil)
>                                          while line
>                                          collect line)))
>
> while I would need "something" as result. Somebody knows solution?
>

What is happening here is no surprise.
Your format control string contains directions to append a line ending
after every element in your list. ("~%")
If you change it into "~{~A~}" you get your desired behaviour.

There are many other things about your function which are rather
unclean: a starting point would be to use with-open-stream and
with-input-from-stream.

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