diff --git a/lib/linebuffer.h b/lib/linebuffer.h
index c99a7580b..4e3549162 100644
--- a/lib/linebuffer.h
+++ b/lib/linebuffer.h
@@ -1,5 +1,5 @@
 /* linebuffer.h -- declarations for reading arbitrarily long lines
-   Copyright (C) 1986, 1991, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1986, 1991, 1998, 1999 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -22,8 +22,8 @@
 
 struct linebuffer
 {
-  long size;			/* Allocated. */
-  long length;			/* Used. */
+  size_t size;			/* Allocated. */
+  size_t length;		/* Used. */
   char *buffer;
 };
 
@@ -39,7 +39,8 @@ struct linebuffer
 void initbuffer PARAMS ((struct linebuffer *linebuffer));
 
 /* Read an arbitrarily long line of text from STREAM into LINEBUFFER.
-   Remove any newline.  Does not null terminate.
+   Keep the newline; append a newline if it's the last line of a file
+   that ends in a non-newline character.  Do not null terminate.
    Return LINEBUFFER, except at end of file return 0.  */
 struct linebuffer *readline PARAMS ((struct linebuffer *linebuffer,
 				     FILE *stream));