RE: address@hidden: RE: set-frame-position - is it a bug?]

[Drew Adams]

This 2005 bug was never fixed. It is apparently a Windows-only bug. Could
this be fixed?

> From: Richard Stallman Sent: Wednesday, July 12, 2006 8:37 AM
> Would someone please try to debug this?
>
>     To: "Emacs-Pretest-Bug" <address@hidden>
>     Date: Sat, 10 Jun 2006 09:56:26 -0700
>
>     This bug was apparently never fixed. To reproduce, simply
>     resize a frame horizontally so that the menu-bar wraps, then
>     change the 'left frame parameter.
>
>     (setq left-pos (cdr (assq 'left (frame-parameters))))
>     (modify-frame-parameters (selected-frame)
>       (list (cons 'left (+ 30 left-pos))))
>
>     The frame moves down, as well as right.
>
>     This is annoying if you have, for instance, a key bound to a
>     command to move the frame right. Repeated use of this key
>     sends the frame downward diagonally. Use of the complementary
>     key to move the frame left sends it downward as well, so the
>     two are not even inverses if the menu-bar wraps.
>
>     Similarly, a command to move the frame up sends it down
>     instead. So, if you have keys bound to commands that move it
>     up and down, the up movement is
>     down instead - the two are not inverses if the menu-bar wraps.
>
>         Sent: Friday, August 05, 2005 7:39 AM
>         To: address@hidden
>         Cc: Emacs-Devel
>         Subject: RE: set-frame-position - is it a bug?
>
>             the intention of the following code
>               (setq fpx (cdr (assoc 'left (frame-parameters))))
>               (setq fpy (cdr (assoc 'top  (frame-parameters))))
>               (setq fpx (+ 1 fpx))
>               (set-frame-position (next-frame) fpx fpy)
>             is to move the frame honizontally 1 pixel right;
>             but as a side-effect I get a vertical move as well.
>             Is there something wrong with my code?
>
>         The code looks OK to me.
>
>         Is your menu-bar (or tool-bar) wider than your frame, so
>         that it wraps around? That will cause the behavior you describe.
>
>         Actually, now that I think of it, we should probably consider
>         this an Emacs bug, so I'm cc'ing the emacs-devel list. Thanks for
>         bringing this up - I've been aware of it for a long time, but it
>         never occurred to me to file a bug.
>
>         Bug: If menu-bar is wider than frame, so it wraps, then
>         set-frame-position gets it wrong, in the manner described above.