From 515a9a0f466acd4cd36c5a960d8525721e65c9fc Mon Sep 17 00:00:00 2001 From: "Richard M. Stallman" Date: Sat, 8 Jun 2002 18:33:56 +0000 Subject: [PATCH] Explain why set-window-hscroll may appear to fail to work. --- lispref/windows.texi | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/lispref/windows.texi b/lispref/windows.texi index 88949cf8458..00404f8c96e 100644 --- a/lispref/windows.texi +++ b/lispref/windows.texi @@ -1612,6 +1612,14 @@ This function sets the number of columns from the left margin that @var{columns} should be zero or positive; if not, it is taken as zero. Fractional values of @var{columns} are not supported at present. +Note that @code{set-window-hscroll} may appear not to work if you test +it by evaluating a call with @kbd{M-:} in a simple way. What happens +is that the function sets the horizontal scroll value and returns, but +then redisplay adjusts the horizontal scrolling to make point visible, +and this overrides what the function did. You can observe the +function's effect if you call it while point is sufficiently far from +the left margin that it will remain visible. + The value returned is @var{columns}. @example -- 2.39.5