From a97e34fc4a77c9dbec1b467eef1dfca8e2410656 Mon Sep 17 00:00:00 2001
From: Chris Hanson <org/chris-hanson/cph>
Date: Mon, 21 Jun 1999 03:47:29 +0000
Subject: [PATCH] Fix bug: scheme-under-emacs stopped working due to
 port-encapsulation changes.  This isn't a general fix -- it only handles the
 one kind of encapsulation that occurs in this place.  If other kinds of
 encapsulation are used, this will have to be generalized.

---
 v7/src/runtime/emacs.scm   | 15 ++++++++++-----
 v7/src/runtime/runtime.pkg |  5 ++++-
 v7/src/runtime/tscript.scm |  8 ++++----
 v8/src/runtime/runtime.pkg |  5 ++++-
 4 files changed, 22 insertions(+), 11 deletions(-)

diff --git a/v7/src/runtime/emacs.scm b/v7/src/runtime/emacs.scm
index 556d86541..1151ebd62 100644
--- a/v7/src/runtime/emacs.scm
+++ b/v7/src/runtime/emacs.scm
@@ -1,6 +1,6 @@
 #| -*-Scheme-*-
 
-$Id: emacs.scm,v 14.26 1999/02/24 21:36:13 cph Exp $
+$Id: emacs.scm,v 14.27 1999/06/21 03:46:54 cph Exp $
 
 Copyright (c) 1988-1999 Massachusetts Institute of Technology
 
@@ -247,10 +247,15 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 	  ((cdar pairs) new-port)))
     (do ((cmdl (nearest-cmdl) (cmdl/parent cmdl)))
 	((not cmdl))
-      (if (let ((port (cmdl/port cmdl)))
-	    (or (eq? port the-console-port)
-		(eq? port emacs-console-port)))
-	  (set-cmdl/port! cmdl new-port)))))
+      (let ((port (cmdl/port cmdl)))
+	(cond ((or (eq? port the-console-port)
+		   (eq? port emacs-console-port))
+	       (set-cmdl/port! cmdl new-port))
+	      ((and (transcriptable-port? port)
+		    (let ((port (encapsulated-port/port port)))
+		      (or (eq? port the-console-port)
+			  (eq? port emacs-console-port))))
+	       (set-cmdl/port! cmdl (make-transcriptable-port new-port))))))))
 
 (define (select-console-port)
   (set! console-output-channel (port/output-channel the-console-port))
diff --git a/v7/src/runtime/runtime.pkg b/v7/src/runtime/runtime.pkg
index 30a658de0..afb5f1b84 100644
--- a/v7/src/runtime/runtime.pkg
+++ b/v7/src/runtime/runtime.pkg
@@ -1,6 +1,6 @@
 #| -*-Scheme-*-
 
-$Id: runtime.pkg,v 14.328 1999/05/13 03:04:25 cph Exp $
+$Id: runtime.pkg,v 14.329 1999/06/21 03:47:29 cph Exp $
 
 Copyright (c) 1988-1999 Massachusetts Institute of Technology
 
@@ -850,6 +850,9 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 	  transcript-on)
   (export (runtime rep)
 	  make-transcriptable-port)
+  (export (runtime emacs-interface)
+	  make-transcriptable-port
+	  transcriptable-port?)
   (initialization (initialize-package!)))
 
 (define-package (runtime format)
diff --git a/v7/src/runtime/tscript.scm b/v7/src/runtime/tscript.scm
index f8701fe01..372db036e 100644
--- a/v7/src/runtime/tscript.scm
+++ b/v7/src/runtime/tscript.scm
@@ -1,6 +1,6 @@
 #| -*-Scheme-*-
 
-$Id: tscript.scm,v 1.3 1999/02/18 03:54:26 cph Exp $
+$Id: tscript.scm,v 1.4 1999/06/21 03:46:49 cph Exp $
 
 Copyright (c) 1990, 1999 Massachusetts Institute of Technology
 
@@ -29,7 +29,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 		   (constructor make-encap-state ()))
   (transcript-port #f))
 
-(define (encap? object)
+(define (transcriptable-port? object)
   (and (encapsulated-port? object)
        (encap-state? (encapsulated-port/state object))))
 
@@ -50,7 +50,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
 (define (transcript-on filename)
   (let ((encap (nearest-cmdl/port)))
-    (if (not (encap? encap))
+    (if (not (transcriptable-port? encap))
 	(error "Transcript not supported for this REPL."))
     (if (encap/tport encap)
 	(error "transcript already turned on"))
@@ -58,7 +58,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
 (define (transcript-off)
   (let ((encap (nearest-cmdl/port)))
-    (if (not (encap? encap))
+    (if (not (transcriptable-port? encap))
 	(error "Transcript not supported for this REPL."))
     (let ((tport (encap/tport encap)))
       (if tport
diff --git a/v8/src/runtime/runtime.pkg b/v8/src/runtime/runtime.pkg
index 578e667cc..f41b92352 100644
--- a/v8/src/runtime/runtime.pkg
+++ b/v8/src/runtime/runtime.pkg
@@ -1,6 +1,6 @@
 #| -*-Scheme-*-
 
-$Id: runtime.pkg,v 14.333 1999/05/13 03:04:10 cph Exp $
+$Id: runtime.pkg,v 14.334 1999/06/21 03:47:25 cph Exp $
 
 Copyright (c) 1988-1999 Massachusetts Institute of Technology
 
@@ -854,6 +854,9 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 	  transcript-on)
   (export (runtime rep)
 	  make-transcriptable-port)
+  (export (runtime emacs-interface)
+	  make-transcriptable-port
+	  transcriptable-port?)
   (initialization (initialize-package!)))
 
 (define-package (runtime format)
-- 
2.25.1