linux-kernel - [PATCH 17/16] Do not reset UTF8 on terminal reset

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Date:	Mon, 2 Apr 2007 09:31:37 +0200 (MEST)
From:	Jan Engelhardt <jengelh@...ux01.gwdg.de>
To:	"Antonino A. Daplas" <adaplas@...il.com>
cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...l.org>,
	Paul LeoNerd Evans <leonerd@...nerd.org.uk>,
	Daniel Jacobowitz <dan@...ian.org>
Subject: [PATCH 17/16] Do not reset UTF8 on terminal reset


On Apr 2 2007 14:49, Antonino A. Daplas wrote:
>On Sun, 2007-04-01 at 20:13 +0200, Jan Engelhardt wrote:
>
>> Allow for the palette to be exposed and changed via sysfs. A call to
>> /usr/bin/reset will slurp the new definitions in for the current
>> console.
>
>I like this. The escape sequences to change the palette does not stay
>permanently.

As much as you like it, there is a slight problem with it. Linux will
currently throw virtual consoles out of UTF8 mode when reset is called.

Also see:
	http://lkml.org/lkml/2005/5/17/289
	http://lkml.org/lkml/2005/5/17/297

These posts argue about terminfo being the culprit. But how can terminfo 
be at fault, when `echo -en "\ec"` triggers it too?

Since I am in a patch mood, here's my stance/patch, which is compile and 
run tested and behaves as expected (both with `echo` and `reset`).

Signed-off-by: Jan Engelhardt <jengelh@....de>
Cc: Andrew Morton <akpm@...l.org>
Cc: Daniel Jacobowitz <dan@...ian.org>
Cc: Paul LeoNerd Evans <leonerd@...nerd.org.uk>
Obsoletes: https://bugzilla.novell.com/show_bug.cgi?id=225853

Index: linux-2.6.21-rc5/drivers/char/vt.c
===================================================================
--- linux-2.6.21-rc5.orig/drivers/char/vt.c
+++ linux-2.6.21-rc5/drivers/char/vt.c
@@ -1518,7 +1518,6 @@ static void reset_terminal(struct vc_dat
 	vc->vc_charset		= 0;
 	vc->vc_need_wrap	= 0;
 	vc->vc_report_mouse	= 0;
-	vc->vc_utf		= 0;
 	vc->vc_utf_count	= 0;
 
 	vc->vc_disp_ctrl	= 0;
#<EOF>
-
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