linux-kernel - Re: [PATCH] kconfig: clean-up reverse dependency help implementation

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Message-ID: <20180221111447.ki7v66azmfgch5om@dell5510>
Date:   Wed, 21 Feb 2018 12:14:48 +0100
From:   Petr Vorel <petr.vorel@...il.com>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:     linux-kbuild@...r.kernel.org, Sam Ravnborg <sam@...nborg.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Ulf Magnusson <ulfalizer@...il.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        "Luis R . Rodriguez" <mcgrof@...nel.org>,
        Paul Bolle <pebolle@...cali.nl>,
        Nicolas Pitre <nicolas.pitre@...aro.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] kconfig: clean-up reverse dependency help implementation

Hi Masahiro,

> This commit splits out the special E_OR handling ('-' instead of '||')
> into a dedicated helper expr_print_revdev().

> Restore the original expr_print() prior to commit 1ccb27143360
> ("kconfig: make "Selected by:" and "Implied by:" readable").

> This makes sense because:

>   - We need to chop those expressions only when printing the reverse
>     dependency, and only when E_OR is encountered

>   - Otherwise, it should be printed as before, so fall back to
>     expr_print()

> This also improves the behavior; for a single line, it was previously
> displayed in the same line as "Selected by", like this:

>   Selected by: A [=n] && B [=n]

> This will be displayed in a new line, consistently:

>   Selected by:
>   - A [=n] && B [=n]

> Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
Reviewed-by: Petr Vorel <pvorel@...e.cz>
> ---

<snip>

>  	get_symbol_props_str(r, sym, P_SELECT, _("  Selects: "));
>  	if (sym->rev_dep.expr) {
> -		str_append(r, _("  Selected by: "));
> +		str_append(r, _("  Selected by: \n"));
                                       ^
I'd remove unnecessary whitespace here ^.

		str_append(r, _("  Selected by:\n"));
>  		expr_gstr_print_revdep(sym->rev_dep.expr, r);
> -		str_append(r, "\n");
>  	}

>  	get_symbol_props_str(r, sym, P_IMPLY, _("  Implies: "));
>  	if (sym->implied.expr) {
> -		str_append(r, _("  Implied by: "));
> +		str_append(r, _("  Implied by: \n"));
The same here.

>  		expr_gstr_print_revdep(sym->implied.expr, r);
> -		str_append(r, "\n");
>  	}

>  	str_append(r, "\n\n");


Kind regards,
Petr