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SubjectRe: [PATCH] kbd: (#7063) make CapsLock work as expected even for non-ASCII
On Tue, Nov 17, 2009 at 12:15:20AM +0100, Samuel Thibault wrote:
> Alexey Dobriyan, le Tue 17 Nov 2009 02:05:23 +0300, a écrit :
> > On Mon, Nov 16, 2009 at 11:54:29PM +0100, Samuel Thibault wrote:
> > > Samuel Thibault, le Mon 16 Nov 2009 23:27:38 +0100, a écrit :
> > > > > My keymap contains
> > > > >
> > > > > keycode 44 = +z
> > > > > shift keycode 44 = +Z
> > > > > altgr keycode 44 = U+044F # CYRILLIC SMALL LETTER YA
> > > > > altgr shift keycode 44 = U+042F # CYRILLIC CAPITAL LETTER YA
> > > >
> > > > And U+044F / U+042F is not KT_LETTER.
> > > >
> > > > Yes, there's no way you can express a unicode character in KT_LETTER.
> > > > Limited interface, but that's not a reason to break other interfaces.
> > >
> > > One way to go would be to decrete that keysyms between 0xD800 and 0xE000
> >
> > And this is going to help me with U+042F/U+044F how?

> --- a/drivers/char/keyboard.c
> +++ b/drivers/char/keyboard.c
> @@ -1258,6 +1258,15 @@ static void kbd_keycode(unsigned int keycode, int down, int hw_raw)
> type = KTYP(keysym);
>
> if (type < 0xf0) {
> + if (keysym >= 0xD800 && keysym < 0xE000) {

keysym is 0x044F at this point.

> + /* Surrogates in Unicode, here KT_LETTER variants of unicode U+0000-U+07FF */
> + keysym -= 0xD800;
> + if (vc_kbd_led(kbd, VC_CAPSLOCK)) {
> + key_map = key_maps[shift_final ^ (1 << KG_SHIFT)];
> + if (key_map)
> + keysym = key_map[keycode];
> + }
> + }
> param.value = keysym;
> if (atomic_notifier_call_chain(&keyboard_notifier_list, KBD_UNICODE, &param) == NOTIFY_STOP)
> return;
>
> Which BTW is correct while the proposed patch earlier wasn't: the
> param.value needs to be the final keysym.

OK, this I should fix.

> But again, that only solves the problem of the limited range
> U+0000-U+0800 and doesn't solve the é/É french keyboard problem.
>
> Adding an interface to change the modifier lock / LED assignation would
> on the other hand permit kbd and console-setup to properly do proper
> capslock processing correctly.
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