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401!uriah.heep!not-for-mail
From: j@uriah.heep.sax.de (J Wunsch)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Alt-keys on text mode applications
Date: 15 Oct 1995 11:12:36 +0100
Organization: Private FreeBSD site, Dresden.
Lines: 43
Message-ID: <45qmqk$imm@uriah.heep.sax.de>
References: <NEWTNews.813635692.20455.jalvarez@sundev.uno.com>
NNTP-Posting-Host: uriah.heep.sax.de
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
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<jalvarez@uno.com> wrote:
>
>The linux console returns an escape sequence when pressing Alt plus a
>regular key (e.g. Alt-a produces <ESC>a, Alt-b produces <ESC>b, etc. in
>raw mode). The FreeBSD console driver does not appear to return anything
>special when Alt is pressed.
The FreeBSD console drivers are supposed to do it this way. pcvt
defaults to the traditional "Meta" key where "Meta" means to add bit 7
to the regular key code, you can force it to change its idea to a
prepended ESC instead by ``options PCVT_META_ESC''. (Things like
Emacs or emacs-style line editors usually handle both cases similarly
for the non-internationalized case.)
syscons is also supposed to prepend an ESC:
void
scintr(int unit)
{
static struct tty *cur_tty;
int c, len;
u_char *cp;
...
c = scgetc(1);
...
switch (c & 0xff00) {
...
case MKEY: /* meta is active, prepend ESC */
(*linesw[cur_tty->t_line].l_rint)(0x1b, cur_tty);
(*linesw[cur_tty->t_line].l_rint)(c & 0xFF, cur_tty);
break;
...
}
}
So i assume you're using the wrong keymap. (Don't ask me, i'm not
a syscons user.)
--
cheers, J"org
joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)