lkml.org 
[lkml]   [2008]   [May]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
SubjectFix VT canonical input in UTF-8 mode [Was: UTF-8 fixes in comments]
Samuel Thibault, le Sun 04 May 2008 00:50:27 +0100, a écrit :
> Willy Tarreau, le Wed 30 Apr 2008 21:49:20 +0200, a écrit :
> > On Wed, Apr 30, 2008 at 01:08:51AM +0100, Samuel Thibault wrote:
> > > Willy Tarreau wrote:
> > > > 3) if I enter Alt-196, I get a "Ä". Flushing the buffer shows that od
> > > > got two bytes: c3 84.
> > >
> > > Confirmed.
> > >
> > > Try init=/bin/stty -a, that will show
> > >
> > > -iutf8
> > >
> > > So there is little wonder that canonical mode does not work as expected.
> > >
> > > Try init=/bin/sh, from that shell run stty iutf8. Then things will work
> > > fine. The fix is thus just to make the VT's tty initial iutf8 setup
> > > follow vt.default_utf8.
> >
> > Will try that on a more recent install. Mine's stty does not support
> > this option. Your analysis makes quite a lot of sense, and such a fix
> > would wipe part of my annoyances/anger with this recent change.
>
> Can you give the patch below a try?
> Dynamic per-VT utf-8 switch should also work, provided that you reopen
> the VT (i.e. log out).

Willy Tarreau, le Sun 04 May 2008 10:55:14 +0200, a écrit :
> I confirm that your patch works perfectly for me. Now backspace correctly
> removes multi-byte characters. My bash is still fooled though but as Alan
> explained it, it's readline which has to be upgraded now.

I guess this is suitable for the stable trees of 2.6.24 and 2.6.25
(where UTF-8 is by default now).




Set IUTF8 as appropriate on VT tty open.

Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>

--- linux/drivers/char/vt.c.orig 2008-05-04 00:37:50.000000000 +0100
+++ linux/drivers/char/vt.c 2008-05-04 00:47:39.000000000 +0100
@@ -2723,6 +2723,10 @@ static int con_open(struct tty_struct *t
tty->winsize.ws_row = vc_cons[currcons].d->vc_rows;
tty->winsize.ws_col = vc_cons[currcons].d->vc_cols;
}
+ if (vc->vc_utf)
+ tty->termios->c_iflag |= IUTF8;
+ else
+ tty->termios->c_iflag &= ~IUTF8;
release_console_sem();
vcs_make_sysfs(tty);
return ret;
@@ -2899,6 +2903,8 @@ int __init vty_init(void)
console_driver->minor_start = 1;
console_driver->type = TTY_DRIVER_TYPE_CONSOLE;
console_driver->init_termios = tty_std_termios;
+ if (default_utf8)
+ console_driver->init_termios.c_iflag |= IUTF8;
console_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_RESET_TERMIOS;
tty_set_operations(console_driver, &con_ops);
if (tty_register_driver(console_driver))
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2008-05-04 12:33    [from the cache]
©2003-2011 Jasper Spaans