because this is normally what you want in an interpreter:
output appears as it is generated.
</para>
+ <para>
+ If you want line-buffered behaviour, as in GHC, you can
+ start your program thus:
+ <programlisting>
+ main = do { hSetBuffering stdout LineBuffering; ... }
+ </programlisting>
+ </para>
</listitem>
</varlistentry>
</variablelist>