From: Chris Hanson <org/chris-hanson/cph>
Date: Fri, 2 Jun 2000 17:29:10 +0000 (+0000)
Subject: Eliminate usage of MARK-PERMANENT!.
X-Git-Tag: 20090517-FFI~3624
X-Git-Url: https://birchwood-abbey.net/git?a=commitdiff_plain;h=965993d5014085459cd61066c8ae37f935b1dc55;p=mit-scheme.git

Eliminate usage of MARK-PERMANENT!.
---

diff --git a/v7/src/edwin/things.scm b/v7/src/edwin/things.scm
index 53f8035a4..c2a8acdbc 100644
--- a/v7/src/edwin/things.scm
+++ b/v7/src/edwin/things.scm
@@ -1,6 +1,6 @@
 ;;; -*-Scheme-*-
 ;;;
-;;; $Id: things.scm,v 1.87 2000/04/04 16:52:14 cph Exp $
+;;; $Id: things.scm,v 1.88 2000/06/02 17:29:10 cph Exp $
 ;;;
 ;;; Copyright (c) 1985, 1989-2000 Massachusetts Institute of Technology
 ;;;
@@ -282,10 +282,11 @@
     (if (not (= column (mark-column point)))
 	(change-column column point))))
 
-(define (change-column column point)
-  (let ((point (mark-permanent! point)))
-    (delete-horizontal-space point)
-    (insert-horizontal-space column point)))
+(define (change-column column mark)
+  (let ((mark (mark-left-inserting-copy mark)))
+    (delete-horizontal-space mark)
+    (insert-horizontal-space column mark)
+    (mark-temporary! mark)))
 
 ;;;; Lines