On Mon, May 10, 2021 at 02:16:16PM +0100, Edward Cree wrote:

On 10/05/2021 12:55, Mauro Carvalho Chehab wrote:

quoted

The main point on this series is to replace just the occurrences
where ASCII represents the symbol equally well

quoted

	- U+2014 ('—'): EM DASH

Em dash is not the same thing as hyphen-minus, and the latter does not
 serve 'equally well'.  People use em dashes because — even in
 monospace fonts — they make text easier to read and comprehend, when
 used correctly.
I accept that some of the other distinctions — like en dashes — are
 needlessly pedantic (though I don't doubt there is someone out there
 who will gladly defend them with the same fervour with which I argue
 for the em dash) and I wouldn't take the trouble to use them myself;
 but I think there is a reasonable assumption that when someone goes
 to the effort of using a Unicode punctuation mark that is semantic
 (rather than merely typographical), they probably had a reason for
 doing so.

I think you're overestimating the amount of care and typographical
knowledge that your average kernel developer has.  Most of these
UTF-8 characters come from latex conversions and really aren't
necessary (and are being used incorrectly).

You seem quite knowedgeable about the various differences.  Perhaps
you'd be willing to write a document for Documentation/doc-guide/
that provides guidance for when to use which kinds of horizontal
line?  https://www.punctuationmatters.com/hyphen-dash-n-dash-and-m-dash/
talks about it in the context of publications, but I think we need
something more suited to our needs for kernel documentation.

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