bug#19482: Changing to big font cause display problem

[Jan D.]

> 27 feb 2015 kl. 09:30 skrev martin rudalics <rudalics@gmx.at>:
> 
> >> That's confusing.  OT1H they are part of the outer window and OTOH they
> >> are drawn around the window manager window.
> >
> > No, the border is drawn around the outer window.
> 
> Here the border appears above the title bar so it's drawn around the
> window manager window.  Do you really see the external border below the
> title bar?

No, but thats because I have a hard time finding a window manager that does not 
override the border width and sets it to 0, jsu because it looks bad.  What you 
see is probably not the border, but the window manager decorations.

> 
> > But if you want to span when the second monitor is connected, but constrain 
> > when there is only one?
> > There are so many corner cases here.  There will be bug reports if Emacs 
> > tries to constrain stuff.
> > The only one that has the full picture is the window manager, so it is its 
> > job, not Emacs.
> 
> Then strictly spoken `set-default-font' should not ask the window
> manager to change the size of our window.

That is a separate issue.  It is up tp the application if it want to request a 
new size.  But it is up to the window manager if it wants to grant or constrain 
that request.

        Jan D.