diff --git a/code/fd-stream.lisp b/code/fd-stream.lisp
index f0994e92e7d3557ba3f8f71feaa2b60ff5f1fe1a..2f065e02a59ab7edff8899a878a88b5ade5d3e31 100644
--- a/code/fd-stream.lisp
+++ b/code/fd-stream.lisp
@@ -7,7 +7,7 @@
 ;;; Scott Fahlman or slisp-group@cs.cmu.edu.
 ;;;
 (ext:file-comment
-  "$Header: /Volumes/share2/src/cmucl/cvs2git/cvsroot/src/code/fd-stream.lisp,v 1.21 1992/03/09 20:17:39 wlott Exp $")
+  "$Header: /Volumes/share2/src/cmucl/cvs2git/cvsroot/src/code/fd-stream.lisp,v 1.22 1992/12/10 01:09:52 ram Exp $")
 ;;;
 ;;; **********************************************************************
 ;;;
@@ -33,6 +33,9 @@
 
 (in-package "LISP")
 
+(export '(file-stream))
+(deftype file-stream () 'fd-stream)
+
 
 ;;;; Buffer manipulation routines.
 
@@ -1011,6 +1014,8 @@ non-server method is also significantly more efficient for large reads.
        (system:serve-all-events)))
     (:element-type
      (fd-stream-element-type stream))
+    (:interactive-p
+     (unix:unix-isatty (fd-stream-fd stream)))
     (:line-length
      80)
     (:charpos