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Code Issues Releases Activity

Explain why set-window-hscroll may appear to fail to work.

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Richard M. Stallman 2002-06-08 18:33:56 +00:00
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commit 515a9a0f46
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lispref/windows.texi
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@ -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