From: Chris Hanson <org/chris-hanson/cph>
Date: Fri, 7 Apr 2000 20:12:50 +0000 (+0000)
Subject: Implement MAKE-BUFFER-INVISIBLE.
X-Git-Tag: 20090517-FFI~4080
X-Git-Url: https://birchwood-abbey.net/git?a=commitdiff_plain;h=490678c5f3bbb73e4b950210cdf53880f1e1887c;p=mit-scheme.git

Implement MAKE-BUFFER-INVISIBLE.
---

diff --git a/v7/src/edwin/curren.scm b/v7/src/edwin/curren.scm
index 902a40a29..5be9310dd 100644
--- a/v7/src/edwin/curren.scm
+++ b/v7/src/edwin/curren.scm
@@ -1,6 +1,6 @@
 ;;; -*-Scheme-*-
 ;;;
-;;; $Id: curren.scm,v 1.123 1999/01/02 06:11:34 cph Exp $
+;;; $Id: curren.scm,v 1.124 2000/04/07 20:12:50 cph Exp $
 ;;;
 ;;; Copyright (c) 1986, 1989-1999 Massachusetts Institute of Technology
 ;;;
@@ -404,19 +404,19 @@ The frame is guaranteed to be deselected at that time."
 	       (buffer-processes buffer))
      (for-each (lambda (hook) (hook buffer))
 	       (get-buffer-hooks buffer 'KILL-BUFFER-HOOKS))
-     (let loop
-	 ((windows (buffer-windows buffer))
-	  (last-buffer false))
-       (if (not (null? windows))
-	   (let ((new-buffer
-		  (or (other-buffer buffer)
-		      last-buffer
-		      (error "Buffer to be killed has no replacement"
-			     buffer))))
-	     (select-buffer-in-window new-buffer (car windows) false)
-	     (loop (cdr windows) new-buffer))))
+     (if (not (make-buffer-invisible buffer))
+	 (error "Buffer to be killed has no replacement" buffer))
      (bufferset-kill-buffer! (current-bufferset) buffer))))
 
+(define (make-buffer-invisible buffer)
+  (let loop ((windows (buffer-windows buffer)) (last-buffer #f))
+    (or (not (pair? windows))
+	(let ((new-buffer (or (other-buffer buffer) last-buffer)))
+	  (and new-buffer
+	       (begin
+		 (select-buffer-in-window new-buffer (car windows) #f)
+		 (loop (cdr windows) new-buffer)))))))
+
 (define-integrable (add-kill-buffer-hook buffer hook)
   (add-buffer-hook buffer 'KILL-BUFFER-HOOKS hook))