Re: set-window-start

[Kevin Rodgers]

Richard Stallman wrote:

>     In Emacs 20.7, (set-window-start WINDOW POS) makes POS the window
>     start, as documented.  In current CVS and in 21.3, it makes the window
>     start either at the _beginning_ of the line POS is on, _or_ at the
>     beginning of the _next_ line, according to rules that are not clear.
>
> I think it is a bug.  There is a mechanism that is supposed to assure
> that when Emacs chooses a new window-start, it tries to choose
> the start of a line.  That mechanism should be disabled when you
> specify a window-start explicitly.  Perhaps the code to disable
> it is not working right.

Not surprising, given the comment that precedes it (in the 21.3 source):

  /* this is not right, but much easier than doing what is right. */
  w->start_at_line_beg = Qnil;

--
Kevin Rodgers