bug#27923: 24.3; -iconic switch screws up geometry

[Geoff Kuenning]

(frame-width) and (frame-height) give 80 and 78, respectively. 
And I double-checked that xwininfo indeed says 79x77+100+0.  (This 
is when starting with -Q, --iconic, --geometry, --font, and my 
default resources.)

If I grep all emacs-related resources from my xrdb file and reload 
it, starting with the same command gives the same inconsistency 
between frame-width/height and xwininfo.  Perhaps the width issue 
is because one character space is allocated to the scrollbar?

I also tried removing both emacs-related and font-related 
resources from the RDB, again getting the width/height 
inconsistency.

But just to make sure we're talking about the same thing, in all 
of these cases emacs is coming up with a correct window size after 
I deiconify it.

Hmmm, though...I just discovered that "emacs -Q --iconic" produces 
a different result: it creates an 80x35 frame (79x34 according to 
xwininfo) even when my xrdb contains both an Emacs.geometry of 
80x78+100+0 and a slightly conflicting gnuemacs.geometry of 
80x78+1180+0.  (I have no clue why I have both!)  This implies 
that there's something in my .emacs that's relevant.

I did some binary searching and narrowed it down to a relatively 
small area.  However, in the process I discovered that there must 
be a race, because on a hunch I tried launching twice with no 
change in my .emacs, and once was OK and once produced the narrow 
window.

Anyway, I finally got down to the following two lines:

(menu-bar-mode -1)
(set-default-font (x-get-resource "Font" ""))

With both of those present, I get the absurdly narrow frame.  If I 
remove the first, then I get a frame that's 38x78.  If I leave the 
first and remove the second, I get a teeny frame that's too small 
to type in, but xwininfo reports it as 1x1 (so suppose emacs 
thinks it's 2x2).  And if I remove both, I get a properly sized 
frame.  (This is all with my xrdb restored, BTW.)

But that's not the strangest part.  I cut my .emacs down to JUST 
those
two lines, and things then worked fine.  More testing eventually 
gave me
the following .emacs file (this is 100% of the contents):

(if nil
   (setq load-path (append
                    (mapcar
                     '(lambda (value)
                        (if (and (stringp value)
                                 (not (string-match 
                                 "^/usr/local/" value))
                                 (string-match "^/usr/" value))
                            (replace-match "/usr/local/" t t 
                            value)
                          value))
                      load-path)
                    load-path)))
(menu-bar-mode -1)
(set-default-font (x-get-resource "Font" ""))

Obviously, the first bit of code doesn't get executed.  But if I 
remove
it, launching in iconic mode works!  Having it there makes stuff 
break.

Note that the .emacs above is 532 bytes.  Is there an ancient 
512-byte
buffer somewhere?  I tried replacing the "if nil" part with 512
semicolons, but that didn't produce an error.

Color me confused...


> > FWIW, when I was doing the tests below there was a brief flash 
> > on my
> > screen each time I launched emacs, implying that the window is 
> > first
> > mapped and then unmapped.  I don't know of that's related to 
> > the
> > problem.
>
> Do the flashes occur only when you load init.el or also when 
> using the
> --iconic --geometry 80x78+1180+0 switches only?
>
> > > emacs -Q --iconic --geometry 80x78+1180+0 --font
> > > "-misc-fixed-bold-r-normal-*-15-*-100-100-*-*-ISO8859-1"
> >
> > This works correctly, but the geometry reported by xwininfo is
> > 79x77+100+0 (which is related to my Emacs.geometry Xrdb setting
> > rather than my gnuemacs.geometry).
>
> Do you mean that both sizes are off by one - 80/79 and 78/77 ? 
> What do
>
> M-: (frame-width) RET
>
> and
>
> M-: (frame-height)
>
> in such a frame give?  Did you remove/comment out the resource 
> settings?
> IIRC Emacs combines everything it finds and applies the last 
> settings it
> read.
>
> > > emacs -Q --iconic --load ~/init.el
> >
> > works entirely correctly with the first init.el (including 
> > correct X
> > placement).
> >
> > > emacs -Q --load ~/init.el
> >
> > works entirely correctly with the second init.el.
>
> So apart from the flashes these would be OK?
>
> > > Also, please tell me what
> > > your original scenario gives with the line specifying the font 
> > > setting
> > > removed from the resource file.
> >
> > That one still fails.
>
> "still" in the sense that you get the same bad width?  Does 
> removing the
> font setting change _anything_ in the appearance of the frame?
>
> Thanks, martin

--
   Geoff Kuenning   geoff@cs.hmc.edu 
   http://www.cs.hmc.edu/~geoff/

A programmer who can't write readable prose is as incompetent as 
one
who can't produce working code.