Re: extended ascii

[Thomas Dickey]

On Thu, 31 May 2007, Bryan Christ wrote:

> well maybe i'm going down the wrong path anyway.  here's the problem...
>
> i run my program on a local, standard linux console and ACS_VLINE is drawn 
> using the minus sign.  i shell into another box with ssh (from the same local 
> console) and run the same program, but this time ACS_VLINE corresponds to 
> codepage 437, character C4.  why the difference?

It depends on the font that's loaded.  Linux has loadable fonts because
early on there were a lot of people with MS-DOS backgrounds from Europe
who wanted that much capability.  The BSD's didn't go that way since
they had a larger faction of non-Europeans who couldn't benefit by that.
(Just my observation).

> i ought to know the difference as much time as i spent mucking around with 
> terminfo, but since the terminfo entry for the linux console does have 
> definitions for acsc, the answer eludes me.

But it doesn't always work.  For systems that have UTF-8 on the console,
that mapping breaks (have to use UTF-8).

> Thomas Dickey wrote:
> > On Thu, 31 May 2007, Bryan Christ wrote:
> >
> > > i was hoping for something portable.  does pdcurses offer this facility?
> >
> > no (I'm not sure what pdcurses does outside of the standard operations
> > in this area - judging by McBrine's response, he doesn't fully understand
> > the question, may need some followup).

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