Re: [PATCH] kconfig: merge_config: avoid false positive matches from comment lines

From: Petr Vorel <petr.vorel@gmail.com>
To: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: linux-kbuild@vger.kernel.org, Nasser <afshin.nasser@gmail.com>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] kconfig: merge_config: avoid false positive matches from comment lines
Date: Fri, 2 Nov 2018 23:44:51 +0100	[thread overview]
Message-ID: <20181102224450.GA11633@dell5510> (raw)
In-Reply-To: <1541145151-7319-1-git-send-email-yamada.masahiro@socionext.com>

Hi Masahiro,

> The current SED_CONFIG_EXP could match to comment lines in config
> fragment files, especially when CONFIG_PREFIX_ is empty. For example,
> Buildroot uses empty prefixing; starting symbols with BR2_ is just
> convention.

> Make the sed expression more robust against false positives from
> comment lines. The new sed expression matches to config options
> followed by '=' or ' is not set'.

> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
> ---
Reviewed-by: Petr Vorel <petr.vorel@gmail.com>

> -SED_CONFIG_EXP="s/^\(# \)\{0,1\}\(${CONFIG_PREFIX}[a-zA-Z0-9_]*\)[= ].*/\2/p"
> +SED_CONFIG_EXP="s/^\(# \)\{0,1\}\(${CONFIG_PREFIX}[a-zA-Z0-9_]*\)\(=.*\| is not set$\)/\2/p"

Good idea, thanks!

Kind regards,
Petr