bug#20022: 24.4.90; window-body-height, window-body-width wrong value after text-scale-adjust

[Vitalie Spinu]

After text-scale-adjust [C-x C-] window-height and window-width return
the old (original) value.

The doc says:

 This function returns the height, in lines, of the body of window
 WINDOW.

So at least the docs are imprecise or incomplete.

Relatedly, there seems to be no way to determine the height/width of a
character in pixels after rescaling. `frame-char-width` returns the
original size.


Thanks, 

  Vitalie


In GNU Emacs 24.4.90.2 (x86_64-unknown-linux-gnu, GTK+ Version 3.12.2)
 of 2015-02-20 on galago
Repository revision: 35f047c06603ce2e549e43ba38de0e61083b0311
Windowing system distributor `The X.Org Foundation', version 11.0.11600000
System Description:     Ubuntu 14.10