update the question about concurrent threads & GHCi

diff --git a/docs/users_guide/ghci.xml b/docs/users_guide/ghci.xml
index f9efe34..cd2a836 100644 (file)
--- a/docs/users_guide/ghci.xml
+++ b/docs/users_guide/ghci.xml
@@ -1556,10 +1556,9 @@ Prelude> :set -fno-glasgow-exts
        <term>Concurrent threads don't carry on running when GHCi is
         waiting for input.</term>
        <listitem>
        <term>Concurrent threads don't carry on running when GHCi is
         waiting for input.</term>
        <listitem>

-         <para>No, they don't.  This is because the Haskell binding
-         to the GNU readline library doesn't support reading from the
-         terminal in a non-blocking way, which is required to work
-         properly with GHC's concurrency model.</para>
+         <para>This should work, as long as your GHCi was built with
+         the <option>-threaded</option> switch, which is the default.
+         Consult whoever supplied your GHCi installation.</para>

        </listitem>
       </varlistentry>
 
        </listitem>
       </varlistentry>