add function buffer-text-append-new-line!

scheme/input-buffer.scm

@@ -73,6 +73,11 @@
   (list-ref (buffer-text buffer)
 	    (- (buffer-pos-line buffer) 1)))
 
+(define (buffer-text-append-new-line! buffer)
+  (set-buffer-text! buffer
+		    (append (buffer-text buffer) 
+			    (list ""))))
+
 ;;handle input
 (define (input buffer ch)
   (cond
@@ -318,23 +323,23 @@
 	   (new-y (- (+ (- pos-fin-ln no-wrapped-lines)
 			first-line-offset)
 		     1)))
-      (debug-message "num-cols "
+;       (debug-message "num-cols "
-		     num-cols
+; 		     num-cols
-		     " no-wrapped-lines "
+; 		     " no-wrapped-lines "
-		     no-wrapped-lines 
+; 		     no-wrapped-lines 
-		     " first-line-offset " 
+; 		     " first-line-offset " 
-		     first-line-offset
+; 		     first-line-offset
-		     " new-y " new-y
+; 		     " new-y " new-y
-		     " length "
+; 		     " length "
-		     item-length
+; 		     item-length
-		     " pos-fin-ln "
+; 		     " pos-fin-ln "
-		     pos-fin-ln
+; 		     pos-fin-ln
-		     " text-index "
+; 		     " text-index "
-		     text-index
+; 		     text-index
-		     " pos-line " 
+; 		     " pos-line " 
-		     (buffer-pos-line buffer)
+; 		     (buffer-pos-line buffer)
-		     " num-lines "
+; 		     " num-lines "
-		     num-lines)
+; 		     num-lines)
 
 ;       (if (and (not (zero? text-index))
 ; 	       (zero? (remainder text-index num-cols))
@@ -368,10 +373,10 @@
       (set-buffer-pos-x! buffer (+ first-column
 				   (modulo text-index num-cols)))
       
-      (debug-message "cursor position "
+;       (debug-message "cursor position "
-		     (buffer-pos-x buffer)
+; 		     (buffer-pos-x buffer)
-		     " "
+; 		     " "
-		     (buffer-pos-y buffer))
+; 		     (buffer-pos-y buffer))
 ;      (debug-message "num-cols " num-cols
 ;		     " pos-col " pos-col
 ;		     " text '" (buffer-text-current-line buffer) "'")

scheme/ncurses-packages.scm

@@ -361,6 +361,8 @@
 	  buffer-history-pos
 	  set-buffer-history-pos!
 	  make-buffer
+	  buffer-text-current-line
+	  buffer-text-append-new-line!
 	  input
 	  print-command-buffer
 	  cursor-right-pos