linux-kernel - Re: [PATCH 1/2] kconfig: also warn of unhandled characters in statements

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Message-ID: <CAEMqcmpnL58MpscBgs6YmrhTeVUKeHDhox2hWJ6wyX9ks=PHYA@mail.gmail.com>
Date:	Sun, 5 Jul 2015 08:44:41 +0200
From:	Ulf Magnusson <ulfalizer.lkml@...il.com>
To:	Paul Bolle <pebolle@...cali.nl>
Cc:	Andreas Ruprecht <andreas.ruprecht@....de>,
	Valentin Rothberg <valentinrothberg@...il.com>,
	rafael.j.wysocki@...el.com,
	"open list:KCONFIG" <linux-kbuild@...r.kernel.org>,
	Kernel Mailing List <linux-kernel@...r.kernel.org>,
	hengelein Stefan <stefan.hengelein@....de>,
	linux@...inikbrodowski.net, Michal Marek <mmarek@...e.cz>
Subject: Re: [PATCH 1/2] kconfig: also warn of unhandled characters in statements

On Sat, Jul 4, 2015 at 11:33 AM, Paul Bolle <pebolle@...cali.nl> wrote:
> On vr, 2015-07-03 at 14:46 +0200, Andreas Ruprecht wrote:
>> While commit 2e0d737fc76f ("kconfig: don't silently ignore unhandled
>> characters") introduced a warning for unsupported characters inside
>> parameters,
>
> What are "parameters"? The term doesn't show up in Documentation/kbuild.
>

zconf.l parses each line like "<COMMAND> <PARAM> <PARAM> ...", with a slightly
different set of characters allowed for <COMMAND> and <PARAM> (for whatever
reason). I agree that that's not clear from the commit message alone though.

(As a side note, that Flex/gperf split seems kinda odd to me. Does anyone know
of a good reason why more lexing wasn't done in zconf.l? Is it an optimization
attempt?)

Cheers,
Ulf
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