Read-line

[bh@eli.ens-fcl.fr (Benoit Habert)]

I have troubles with read-line function in MCL.

Read-line is supposed to "read in a line of text terminated by a newline.
It returns the line as a character string" [Steele 90].
As a matter of fact, in MCL, read-line expects a non-empty line, and then
returns it as a string. If you just press the RETURN key, the top-level
waits until it receives a non-empty line.

Is there a means in MCL to fix the problem ? I want a way to return either
a non-empty string or the empty string delimited by the RETURN key.

Thanks in advance

Benoit Habert