Re: Detecting if a terminal can do reverse video

[Thomas Dickey]

On Thu, 16 Nov 2006, Mike Aubury wrote:

> Or more to the point - that it can't!
>
> Is there any easy way to detect this ?
>
> Background..
> I need to add some emphasis to the "current" menu option which I'm doing by
> making it in REVERSE video, but some terminals can't do reverse, so I'm
> supposed to put "[" and "]" around the option. I've got the code working with
> an environment variable, but it'd be nice if I could just detect it...

You can check if the terminfo description says so - though of course that
may be unreliable.  By making a module include <term.h>, you can test if
enter_reverse_mode is a nonnull string.  Also (sgr), set_attributes may 
claim that it implements it (though the check is more obscure, and a lot 
of people use cut/paste on sgr where rev might actually get some 
scrutiny).

--
Thomas E. Dickey
http://invisible-island.net
ftp://invisible-island.net