bug#33921: 27.0.50; Default height is inconsistently - and apparently also incorrectly - documented

[martin rudalics]

>> Evaluating (frame-height) with emacs -Q should yield 36.  What does it
>> give for you?  And what is your value of (window-total-height) for the
>> initial window?  It's 35 here.
>
> (frame-height) yields 29, and (window-total-height) yields 28.

Hmm... then it's not even vague according to Eli.  I'm afraid you have
to use the debugger to find out what goes wrong.  For starters I would
set a breakpoint at the beginning of x_figure_window_size (in frame.c)
and check whether any height setting gets applied.

> When I run (set-frame-height nil 36), then (frame-height) yields 36.
>
> So, it's possible to obtain this frame height, and ideally this should
> also be obtainable with the "-g" option.
>
> I tried all this with the window manager FVWM as shipped with Debian.

If FVWM interferes we will find out soon enough.

martin