From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 78243158DA3; Mon, 14 Apr 2025 07:18:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744615130; cv=none; b=V/FkdxU5lDtcreWWakgOyC6eH0Vmk6ScfgMV3ktoUwQpZjKgxXH+F1mX1r5wWMg7pGF78WcjABY1fFar63y2sshIKhGvmsXqeMXkFJmNYBRvKx3q6QJqgG9UL+6BK/O/BHgF7pLKN0iqktmdz8YA/5R+aWNU5cMcjfnKbJXQr8g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744615130; c=relaxed/simple; bh=/bk9HUID4txjW16YailWtEgBIySW4ldZU528nnGftv8=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=n+ThXuRKQpF3pz7RTF/wHiSrpmKXRnyPtEY+/jr8UUBsv1sjEfgU8v5bcO+p1LjjTvn7PHw8+e3fdAV+YprP536UgC3Xvhlo4AkdY2zkvcWSRIzcO4tu7oje8aS7en6MB4l/pPiHzynKKNnCrg0FG9QW+gpHgYdP0dPug95mWKQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=OzhjpGQ2; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="OzhjpGQ2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 939A6C4CEE2; Mon, 14 Apr 2025 07:18:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1744615129; bh=/bk9HUID4txjW16YailWtEgBIySW4ldZU528nnGftv8=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=OzhjpGQ2v76OSmdF2f747QAJ8Om2xTvG8NWJBIPM+rqGEDIzkQVSEZwxebkKQQSFl KBR04xpRjpcObNP5Gr5LRP+wsJz273VamC0iFNWEf2EapEeOklnWH0W83yuimJh7BI Lj1f/RbClZ7hblzcCSav3tScPLxMmH8Zl1WuHJfPtbfOV078YGhdMD+pa2JBz9OGPJ UIqjDAvEJQ3WjAt469wDgdwXlZMV47z7umvZ+Qa3jS96DQEebclenabars0xxSd6B4 79UZK8IobjkGmfAfoh/hOlH7zEP02CkWBuI93koD///BZW8w/me2FuAPxvDvz0g/tq vc25WiIJlixYQ== Message-ID: Date: Mon, 14 Apr 2025 09:18:46 +0200 Precedence: bulk X-Mailing-List: linux-serial@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 11/11] vt: pad double-width code points with a zero-white-space To: Nicolas Pitre , Greg Kroah-Hartman Cc: Nicolas Pitre , Dave Mielke , linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org References: <20250410011839.64418-1-nico@fluxnic.net> <20250410011839.64418-12-nico@fluxnic.net> Content-Language: en-US From: Jiri Slaby Autocrypt: addr=jirislaby@kernel.org; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 10. 04. 25, 3:14, Nicolas Pitre wrote: > From: Nicolas Pitre > > In the Unicode screen buffer, we follow double-width code points with a > space to maintain proper column alignment. This, however, creates > semantic problems when e.g. using cut and paste or selection. > > Let's use a better code point for the column padding's purpose i.e. a > zero-white-space rather than a full space. > > Signed-off-by: Nicolas Pitre > --- > drivers/tty/vt/vt.c | 11 ++++++++--- > 1 file changed, 8 insertions(+), 3 deletions(-) > > diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c > index e3d35c4f92..dc84f9c6b7 100644 > --- a/drivers/tty/vt/vt.c > +++ b/drivers/tty/vt/vt.c > @@ -2937,12 +2937,13 @@ static int vc_con_write_normal(struct vc_data *vc, int tc, int c, > width = 2; > } else if (ucs_is_zero_width(c)) { > prev_c = vc_uniscr_getc(vc, -1); > - if (prev_c == ' ' && > + if (prev_c == 0x200B && Then introduce a NAME (macro) for this. thanks, -- js suse labs