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Re: core dump when window is too short; infinite loop when too narrow

From: Algorithm Petrofsky
Subject: Re: core dump when window is too short; infinite loop when too narrow
Date: Thu, 17 Jan 2002 14:42:02 -0800

> From: Eli Zaretskii <address@hidden>
> On Wed, 16 Jan 2002, Algorithm Petrofsky wrote:
> > -- Create a window with height two, but zero usable lines because
> >    mode-line-format and header-line-format are both non-nil:
> > 
> >      emacs -q
> >      C-u C-x 2 C-h i C-x o M-2 C-x ^ M-C-v
> > 
> >    Symptom: Fatal error (6).Aborted (core dumped)
> Could you please try the pretest of Emacs 21.2, ... 21.1.80

I get the same symptom.  Is there are any version that passes this
test on a tty?

By the way, I would like to request that one-line and two-line windows
be supported, with the semantics that mode-lines and header-lines are
not displayed on one-line windows, and header-lines are not displayed
on two-line windows if there is a mode-line.  These rules would still
ensure that there is at least one line of buffer display.  I think
these rules are preferable to disallowing windows shorter than three
even when they are not trying to use a mode-line or header-line.

An application I have in mind is an emulator of an Infocom Z-machine's
display (see malyon.el), for which the natural implementation is two
windows with no mode-line or header-line between them.  The size of
the upper window is often only one or two lines.


P.S.  I'm talking about absolute minimums here.  I'm not suggesting
changing the default values of window-min-height and window-min-width
(which are four and ten).

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