linux-kernel - Re: [PATCH] cleanup: Add usage and style documentation

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Date: Sun, 24 Mar 2024 07:23:31 +0100
From: Lukas Wunner <lukas@...ner.de>
To: Dan Williams <dan.j.williams@...el.com>
Cc: Matthew Wilcox <willy@...radead.org>,
	Peter Zijlstra <peterz@...radead.org>,
	torvalds@...ux-foundation.org, Bjorn Helgaas <bhelgaas@...gle.com>,
	Ira Weiny <ira.weiny@...el.com>,
	Jonathan Cameron <jonathan.cameron@...wei.com>,
	Jesse Brandeburg <jesse.brandeburg@...el.com>,
	Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
	Jonathan Corbet <corbet@....net>, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org, gregkh@...uxfoundation.org,
	linux-doc@...r.kernel.org
Subject: Re: [PATCH] cleanup: Add usage and style documentation

On Sat, Mar 23, 2024 at 05:57:45PM -0700, Dan Williams wrote:
> Hmm, how about split the difference and teach scripts/kernel-doc to treat
> Peter's preferred markup for a C code example as a synonym, i.e.
> effectively a search and replace of a line with only:
> 
> 	Ex.
> 
> ...with:
> 
> 	.. code-block:: c
> 
> ...within a kernel-doc DOC: section?
> 
> Might be easier said the done as I stare down a pile of perl. Maybe a
> perl wrangler will come along and take pity on this patch.

On line 757, there are two regexes...

    #
    # Regexes used only here.
    #
    my $sphinx_literal = '^[^.].*::$';
    my $sphinx_cblock = '^\.\.\ +code-block::';

..which are (only) used immediately below in output_highlight_rst().

Amend those regexes to also match "Ex.", e.g.

    my $sphinx_cblock = '^\.\.\ +(code-block::|Ex\.)';

Alternatively, add another variable definition and match against it
in output_highlight_rst().

A third alternative is to use the "::" syntax in lieu of
".. code-block:: c" in your C source file, if that causes
less eyesore for Peter. ;)

Thanks,

Lukas