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| author | Richard M. Stallman <rms@gnu.org> | 2001-07-12 08:46:28 +0000 |
|---|---|---|
| committer | Richard M. Stallman <rms@gnu.org> | 2001-07-12 08:46:28 +0000 |
| commit | 41448f63443985b8efb28424725b01e638de9608 (patch) | |
| tree | 0b411285525c5b10ff3a871d9d09e4550e0fe8e1 | |
| parent | 9540ec3fb474d488b2b280a4712dd449d8be13d2 (diff) | |
| download | emacs-41448f63443985b8efb28424725b01e638de9608.tar.gz | |
Explain window-end never scrolls the window.
| -rw-r--r-- | lispref/windows.texi | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/lispref/windows.texi b/lispref/windows.texi index 85655d8bb28..bb5c88f0c23 100644 --- a/lispref/windows.texi +++ b/lispref/windows.texi @@ -1144,10 +1144,17 @@ If the last redisplay of @var{window} was preempted, and did not finish, Emacs does not know the position of the end of display in that window. In that case, this function returns @code{nil}. -If @var{update} is non-@code{nil}, @code{window-end} always returns -an up-to-date value for where the window ends. If the saved value is -valid, @code{window-end} returns that; otherwise it computes the correct +If @var{update} is non-@code{nil}, @code{window-end} always returns an +up-to-date value for where the window ends, based on the current +@code{window-start} value. If the saved value is valid, +@code{window-end} returns that; otherwise it computes the correct value by scanning the buffer text. + +Even if @var{update} is non-@code{nil}, @code{window-end} does not +attempt to scroll the display if point has moved off the screen, the +way real redisplay would do. It does not alter the +@code{window-start} value. In effect, it reports where the displayed +text will end if scrolling is not required. @end defun @defun set-window-start window position &optional noforce |