On Mon, May 04, 2020 at 10:48:35PM +0200, Tadziu Hoffmann wrote:
> Subject: Re: Why does simply creating a diversion produce output?
>
>
> > .di d
> > foo
> > .di
> > .rm d
>
> Output is only sent to the diversion when a break occurs,
> either explicitly with .br, or when enough text has been
> collected to fill a line, or in no-fill mode. Otherwise,
> the diversion remains empty, but a partially collected
> line exists when the end of input is encountered.
> This causes a page to be begun, but since the partially
> collected line is not forced out, the page remains empty.
>
> Try the following variations
>
> .di d
> foo
> .br
> .di
> .rm d
>
> and
>
> .di d
> foo
> .di
> .rm d
> .br
>
> to see this.
That explains why the diversion is empty. But diversions have
nothing to do with page traps. The contents of a diversion aren't
output until the diversion is explicityly called. I don't see any
code to that effect implied or explicit here.
-- Steve
--
Steve Izma
-
Home: 35 Locust St., Kitchener, Ontario, Canada N2H 1W6
E-mail: si...@golden.net phone: 519-745-1313
cell (text only; not frequently checked): 519-998-2684
==
I have always felt the necessity to verify what to many seemed a
simple multiplication table.
-- Ilya Ehrenburg (Soviet author and critic; he's not
talking about mathematics)
