linux-kernel - Re: [PATCH 03/36] tty/vt: consolemap: define UNI

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Date:   Wed, 8 Jun 2022 08:55:52 +0200
From:   Jiri Slaby <jslaby@...e.cz>
To:     Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-serial <linux-serial@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 03/36] tty/vt: consolemap: define UNI_* macros for
 constants

On 07. 06. 22, 15:21, Ilpo Järvinen wrote:
> On Tue, 7 Jun 2022, Jiri Slaby wrote:
> 
>> The code uses constants for sizes of dictionary substructures on many
>> places. Define 3 macros and use them in the code, so that loop bounds,
>> local variables and the dictionary always match. (And the loop bounds
>> are obvious now too.)
>>
>> Signed-off-by: Jiri Slaby <jslaby@...e.cz>
> 
> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
> 
>> -			for (k = 0; k < 64; k++) {
>> +			for (k = 0; k < UNI_ROW_GLYPHS; k++) {
>>   				glyph = p2[k];
>>   				if (glyph >= 0 && glyph < MAX_GLYPH
>>   					       && q[glyph] < 32)
> 
> Probably unrelated to this change but what's that < 32? It seems to appear
> twice related to the inverse mapping (and you didn't end up naming it).

That's ascii C0 test _IMO_.

thanks,
-- 
js
suse labs