SBCL stream sockets fail to flush

[joaotavora]

bug imported from https://bugs.launchpad.net/slime/+bug/820649

When doing stream I/O over an SBCL socket, Slime should set
the serve-events property of the stream to NIL. The default is T.

I've included a patch that makes the change.

When serve-events is T, SBCL will queue data it cannot flush to
the stream, assuming that some code will later flush it using
the serve-events infrastructure. When a stream specifies NIL
for serve-events, SBCL will correctly flush all the data to the socket
before returning from force-output.

[joaotavora]

@brown, you attached this patch to this original issue, can you confirm it still holds?

--- /home/build/google3/third_party/lisp/slime/swank-sbcl.lisp  2011-07-25 17:08:46.000000000 -0400
+++ swank-sbcl.lisp 2011-07-28 15:35:32.831934184 -0400
@@ -278,6 +278,7 @@
                                      :input t
                                      :element-type 'character
                                      :buffering buffering
+                                     :serve-events nil
                                      #+sb-unicode :external-format
                                      #+sb-unicode external-format
                                      ))

[brown]

A change similar to the patch I recommended was present in Slime when I
updated my local version to the head version of Slime on 2011-08-10.
I think you can mark this problem as having been fixed.

Bob

[joaotavora]

great!