linux-kernel - Re: [PATCH v3 3/5] checkpatch: kconfig: enforce help text indentation

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Date:   Tue, 05 Jan 2021 00:57:09 -0800
From:   Joe Perches <joe@...ches.com>
To:     Nicolai Fischer <nicolai.fischer@....de>,
        linux-kernel@...r.kernel.org
Cc:     apw@...onical.com, akpm@...ux-foundation.org,
        johannes.czekay@....de, linux-kernel@...cs.fau.de
Subject: Re: [PATCH v3 3/5] checkpatch: kconfig: enforce help text
 indentation

On Mon, 2021-01-04 at 14:09 -0800, Joe Perches wrote:
> On Sun, 2021-01-03 at 08:50 +0100, Nicolai Fischer wrote:
> > Adds a new warning in case the indentation level of the
> > first line of a Kconfig help message is not at least two spaces
> > higher than the keyword itself.
> > Blank lines between the message and the help keyword
> > are ignored.
> > 
> > Co-developed-by: Johannes Czekay <johannes.czekay@....de>
> > Signed-off-by: Johannes Czekay <johannes.czekay@....de>
> > Signed-off-by: Nicolai Fischer <nicolai.fischer@....de>
> > ---
> > 
> > Now matches indentation of two or more spaces, instead of exactly two.
> 
> No, this should match exactly 2 and warn on any other use.

To clarify, only the first line after the help keyword needs to
have a 2 space indent more than the help keyword and the help
block may start with Kconfig keywords.

Subsequent help block lines may have more than 2 chars.

The help block line count should end when the indent is less than
the help keyword indent and is a non-blank line.

This should be valid:

	help
	  line 1
	    -- reason 1
	    -- reason 2
	       continuation
	    -- reason 3

But this should warn only on line 1:

	help
	   line 1 has a 3 space indent
	   -- reason 1
	   -- reason 2
	       continuation
	   -- reason 3