diff -ruN qemacs-0.3.1/buffer.c qemacs-0.3.1-aon1/buffer.c
--- qemacs-0.3.1/buffer.c 2003-04-22 01:01:42.000000000 +0300
+++ qemacs-0.3.1-aon1/buffer.c 2004-11-12 18:53:18.510488192 +0200
@@ -1437,11 +1437,12 @@
     if (stat(filename, &st) == 0)
         mode = st.st_mode & 0777;
 
-    /* backup old file if present */
-    strcpy(buf1, filename);
-    strcat(buf1, "~");
-    rename(filename, buf1);
-
+    /* backup old file if present and make-backup-files is on */
+    if(mbf == 1) {
+ strcpy(buf1, filename);
+ strcat(buf1, "~");
+ rename(filename, buf1);
+    }
     ret = b->data_type->buffer_save(b, filename);
     if (ret < 0)
         return ret;
diff -ruN qemacs-0.3.1/qe.c qemacs-0.3.1-aon1/qe.c
--- qemacs-0.3.1/qe.c 2003-04-22 01:01:42.000000000 +0300
+++ qemacs-0.3.1-aon1/qe.c 2004-11-12 18:53:52.524317304 +0200
@@ -61,7 +61,7 @@
 static QEditScreen global_screen;
 static int screen_width = 0;
 static int screen_height = 0;
-
+mbf = 1;
 /* mode handling */
 
 void qe_register_mode(ModeDef *m)
@@ -4319,6 +4319,14 @@
     do_refresh(qs->first_window);
 }
 
+static void make_backup_files(EditState *s) {
+     if(mbf == 1) {
+  mbf = 0;
+     } else {
+  mbf = 1;
+     }
+}
+
 /* compute default path for find/save buffer */
 static void get_default_path(EditState *s, char *buf, int buf_size)
 {
diff -ruN qemacs-0.3.1/qe.h qemacs-0.3.1-aon1/qe.h
--- qemacs-0.3.1/qe.h 2003-04-22 01:01:42.000000000 +0300
+++ qemacs-0.3.1-aon1/qe.h 2004-11-12 18:53:18.516487280 +0200
@@ -1140,3 +1140,5 @@
 int qe_bitmap_format_to_pix_fmt(int format);
 
 #endif
+
+int mbf;
diff -ruN qemacs-0.3.1/qeconfig.h qemacs-0.3.1-aon1/qeconfig.h
--- qemacs-0.3.1/qeconfig.h 2003-04-22 01:01:42.000000000 +0300
+++ qemacs-0.3.1-aon1/qeconfig.h 2004-11-12 18:53:18.516487280 +0200
@@ -68,5 +68,7 @@
     CMD1( KEY_CTRLX(KEY_CTRL('u')), KEY_NONE, "upcase-region", 
           do_changecase_region, 1)
 
+    CMD0( KEY_NONE, KEY_NONE, "make-backup-files", make_backup_files)
+
     /* keyboard macros */
     CMD0( KEY_CTRLX('('), KEY_NONE, "start-kbd-macro", do_start_macro)
     CMD0( KEY_CTRLX(')'), KEY_NONE, "end-kbd-macro", do_end_macro)