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-rw-r--r--src/window.h16
1 files changed, 9 insertions, 7 deletions
diff --git a/src/window.h b/src/window.h
index c04d654639b..6827449649a 100644
--- a/src/window.h
+++ b/src/window.h
@@ -207,13 +207,15 @@ struct window
/* Return the frame column before which the text in window W ends.
This is different from WINDOW_RIGHT_EDGE because it does not include
- a right-hand scroll bar if any. */
-
-#define WINDOW_RIGHT_MARGIN(W) \
- (WINDOW_RIGHT_EDGE (W) \
- - (FRAME_HAS_VERTICAL_SCROLL_BARS_ON_RIGHT (XFRAME (WINDOW_FRAME (W))) \
- ? FRAME_SCROLL_BAR_COLS (XFRAME (WINDOW_FRAME (W))) \
- : 0))
+ a scroll bar or window-separating line on the right edge. */
+
+#define WINDOW_RIGHT_MARGIN(W) \
+ (WINDOW_RIGHT_EDGE (W) \
+ - (! FRAME_HAS_VERTICAL_SCROLL_BARS (XFRAME (WINDOW_FRAME (W))) \
+ ? 1 \
+ : FRAME_HAS_VERTICAL_SCROLL_BARS_ON_RIGHT (XFRAME (WINDOW_FRAME (W))) \
+ ? FRAME_SCROLL_BAR_COLS (XFRAME (WINDOW_FRAME (W))) \
+ : 0))
/* 1 if window W takes up the full width of its frame. */