linux-kernel - Re: [PATCH] coccicheck: Allow for overriding spatch flags

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Message-ID: <alpine.DEB.2.02.1606122237540.2180@localhost6.localdomain6>
Date:	Sun, 12 Jun 2016 22:39:06 +0200 (CEST)
From:	Julia Lawall <julia.lawall@...6.fr>
To:	Deepa Dinamani <deepa.kernel@...il.com>
cc:	Julia Lawall <julia.lawall@...6.fr>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Arnd Bergmann <arnd@...db.de>,
	Gilles Muller <Gilles.Muller@...6.fr>,
	Nicolas Palix <nicolas.palix@...g.fr>,
	Michal Marek <mmarek@...e.com>
Subject: Re: [PATCH] coccicheck: Allow for overriding spatch flags

On Sun, 12 Jun 2016, Deepa Dinamani wrote:

> >> Documentation/coccinelle.txt suggests using the SPFLAGS
> >> make variable to pass additional options to spatch.
> >>
> >> Reorder the way SPFLAGS is added to FLAGS, to allow
> >> for options in the SPFLAGS to override the default
> >> --very-quiet option.
> >>
> >> Similarly, rearrage the FLAGS for org or report mode.
> >> This allows for overriding of the default --no-show-diff
> >> option through SPFLAGS.
> >
> > The first looks like a good idea, but do you find a use case for the
> > second?  The diff that is shown in org or report mode may be sort of
> > random.  It is just an easy hack to reuse the same pattern code for
> > context, org, and report modes, but there isn't an intent to see the diff
> > produced by context mode in org or report mode.
> 
> I thought this at first, that org report mode wouldn't need it the diff.
> But if a user wishes to override the option, then why should we not
> accept that the user knows what they are doing?

I guess... Another issue is that the org/report mode output comes from 
python, and the diff output comes from ocaml.  They are not synchronized.  
Ie, the report won't come out next to the relevant diff.

julia