linux-kernel - Re: Coccinelle: zalloc-simple: Checking consequences from the usage of at signs in Python strings

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Date:   Fri, 19 Jan 2018 17:18:54 +0100 (CET)
From:   Julia Lawall <julia.lawall@...6.fr>
To:     SF Markus Elfring <elfring@...rs.sourceforge.net>
cc:     cocci@...teme.lip6.fr,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Himanshu Jha <himanshujha199640@...il.com>,
        LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org,
        Gilles Muller <Gilles.Muller@...6.fr>,
        "Luis R. Rodriguez" <mcgrof@...nel.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nicolas Palix <nicolas.palix@...g.fr>
Subject: Re: Coccinelle: zalloc-simple: Checking consequences from the usage
 of at signs in Python strings



On Fri, 19 Jan 2018, SF Markus Elfring wrote:

> > I removed the blank line at EOF,
> > then applied to linux-kbuild/misc.
>
> This script for the semantic patch language is using the at sign within string
> literals for Python code.
>
> It is nice when this character seems to work also with the current software.

So it works, but you are complaining anyway?

> How does its usage fit to the following information in the SmPL manual?
>
> https://github.com/coccinelle/coccinelle/blob/bf1c6a5869dd324f5faeeaa3a12d57270e478b21/docs/manual/cocci_syntax.tex#L50
>
> “…
> Furthermore, @ should not be used in this code.
> Spatch scans the script code for the next @ and considers that to be the
> beginning of the next rule, even if @ occurs within e.g., a comment.
> …”

I guess the conclusion is that it woks in strings (which are pretty
universal) and not in comments (which are language specific).

julia

>
> See also:
> Configuration or escaping of @ characters for embedded programming language scripts
> https://github.com/coccinelle/coccinelle/issues/36
>
> Regards,
> Markus
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