Improve doc strings of fringe indicator variables

* src/buffer.c (syms_of_buffer): Fix doc strings of
'indicate-empty-lines' and 'indicate-buffer-boundaries'.

diff --git a/src/buffer.c b/src/buffer.c
index eca2843e2bc30d7950542efbfe5673d4de81888d..32982976d2f33d6e0adc129f444b2e5cccf85126 100644 (file)
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -6018,15 +6018,16 @@ specifies.  */);
 
   DEFVAR_PER_BUFFER ("indicate-empty-lines",
                     &BVAR (current_buffer, indicate_empty_lines), Qnil,
-                    doc: /* Visually indicate empty lines after the buffer end.
-If non-nil, a bitmap is displayed in the left fringe of a window on
-window-systems.  */);
+                    doc: /* Visually indicate unused ("empty") screen lines after the buffer end.
+If non-nil, a bitmap is displayed in the left fringe of a window
+on graphical displays for each screen line that doesn't correspond
+to any buffer text.  */);
 
   DEFVAR_PER_BUFFER ("indicate-buffer-boundaries",
                     &BVAR (current_buffer, indicate_buffer_boundaries), Qnil,
                     doc: /* Visually indicate buffer boundaries and scrolling.
 If non-nil, the first and last line of the buffer are marked in the fringe
-of a window on window-systems with angle bitmaps, or if the window can be
+of a window on graphical displays with angle bitmaps, or if the window can be
 scrolled, the top and bottom line of the window are marked with up and down
 arrow bitmaps.