; Clarify docs of pos-visible-in-window-p some more

diff --git a/doc/lispref/windows.texi b/doc/lispref/windows.texi
index 881d364232aeef023a272137b6cfa259475c45db..1da2d1cfe7ba8636898eca93e40f0e2fd3f65331 100644 (file)
--- a/doc/lispref/windows.texi
+++ b/doc/lispref/windows.texi
@@ -3174,12 +3174,14 @@ position that works well with point, and thus @var{position} is not used.
 @defun pos-visible-in-window-p &optional position window partially
 This function returns non-@code{nil} if @var{position} is within the
 range of text currently visible on the screen in @var{window}.  It
-returns @code{nil} if @var{position} is scrolled vertically out of view.
-Locations that are partially obscured are not considered visible unless
-@var{partially} is non-@code{nil}.  The argument @var{position} defaults
-to the current position of point in @var{window}; @var{window}, to the
-selected window.  If @var{position} is @code{t}, that means to check the
-first visible position of the last visible screen line in @var{window}.
+returns @code{nil} if @var{position} is scrolled vertically out of
+view.  Locations that are partially obscured are not considered
+visible unless @var{partially} is non-@code{nil}.  The argument
+@var{position} defaults to the current position of point in
+@var{window}; @var{window} defaults to the selected window.  If
+@var{position} is @code{t}, that means to check either the first
+visible position of the last screen line in @var{window}, or the
+end-of-buffer position, whichever comes first.
 
 This function considers only vertical scrolling.  If @var{position} is
 out of view only because @var{window} has been scrolled horizontally,

diff --git a/src/window.c b/src/window.c
index 0f35066c7d5c974edf60c5dfeb41d59d01dc37e6..8d899d6d350daa71d4c6b4cab312658407c4c5fd 100644 (file)
--- a/src/window.c
+++ b/src/window.c
@@ -1686,8 +1686,9 @@ Return nil if that position is scrolled vertically out of view.  If a
 character is only partially visible, nil is returned, unless the
 optional argument PARTIALLY is non-nil.  If POS is only out of view
 because of horizontal scrolling, return non-nil.  If POS is t, it
-specifies the position of the first glyph displayed on the last visible
-screen line in WINDOW.  POS defaults to point in WINDOW; WINDOW defaults
+specifies the position of either the first position displayed on the
+last visible screen line in WINDOW, or the end-of-buffer position,
+whichever comes first.  POS defaults to point in WINDOW; WINDOW defaults
 to the selected window.
 
 If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil,