From: "Göktuğ Kayaalp" <self@gkayaalp.com>
To: emacs-devel@gnu.org
Cc: Alan Mackenzie <acm@muc.de>
Subject: Re: Changing line widths in the Emacs source code
Date: Sun, 13 Sep 2020 23:13:43 +0300 [thread overview]
Message-ID: <87o8m9sadk.fsf@gkayaalp.com> (raw)
In-Reply-To: <87d02pmsi7.fsf@t510.orion.oneofus.la>
On 2020-09-13 21:38 +03, Vladimir Sedach <vas@oneofus.la> wrote:
> Alan Mackenzie <acm@muc.de> writes:
> The optimum line length for legibility has been found to be 55-60
> characters over hundreds of years of book publishing experience. 90
> characters per line is considered the absolute maximum, and you
> rarely see it. "Today's wide screens" is as bad of a reason for
> increasing line length in text files as "today's wide paper" would be
> an excuse to increase line length in books.
Not to refute any other points here, but this is an oft-mentioned
factoid, yet code is not prose, so how relevant this is is questionable.
Most importantly, a decent chunk of an average line is indentation:
(require 'cl-lib)
(let ((spaces '(0))
(line-count 1))
(with-current-buffer "org.el.gz"
(goto-char (point-min))
(while (not (looking-at "\\'"))
;; expand tabs, 8 spaces in my setup
(untabify
(line-beginning-position)
(save-excursion (back-to-indentation) (point)))
(push
(- (save-excursion (back-to-indentation) (point))
(line-beginning-position))
spaces)
(cl-incf line-count)
;; beginning of next line
(goto-char (1+ (line-end-position)))))
(message "On average %f spaces worth of indentation per line (%d lines)"
(/ (apply #'+ spaces) (float line-count))
line-count))
=> "On average 7.957429 spaces worth of indentation per line (21235 lines)"
So assuming 80-char lines, on average 1/10 of a line is leading
whitespace.
--
İ. Göktuğ Kayaalp / @cadadr / <https://www.gkayaalp.com/>
pgp: 024C 30DD 597D 142B 49AC 40EB 465C D949 B101 2427
next prev parent reply other threads:[~2020-09-13 20:13 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-13 13:45 Changing line widths in the Emacs source code Lars Ingebrigtsen
2020-09-13 13:58 ` Stefan Kangas
2020-09-13 14:09 ` Lars Ingebrigtsen
2020-09-13 15:53 ` Stefan Kangas
2020-09-13 16:21 ` Lars Ingebrigtsen
2020-09-13 16:51 ` Yuan Fu
2020-09-13 16:58 ` Lars Ingebrigtsen
2020-09-13 17:55 ` Stephen Leake
2020-09-13 18:04 ` arthur miller
2020-09-13 17:34 ` Eric Abrahamsen
2020-09-13 17:54 ` Stephen Leake
2020-09-13 14:22 ` Alan Mackenzie
2020-09-13 18:38 ` Vladimir Sedach
2020-09-13 20:13 ` Göktuğ Kayaalp [this message]
2020-09-13 20:52 ` Stefan Monnier
2020-09-13 21:23 ` Göktuğ Kayaalp
2020-09-14 0:08 ` Tim Cross
2020-09-13 23:45 ` Óscar Fuentes
2020-09-14 2:23 ` Stefan Monnier
2020-09-14 2:28 ` T.V Raman
2020-09-14 7:42 ` tomas
2020-09-14 9:59 ` Alan Third
2020-09-15 7:25 ` Stefan Kangas
2020-09-13 14:53 ` Daniel Martín
2020-09-13 15:01 ` Lars Ingebrigtsen
2020-09-13 17:23 ` Andy Moreton
2020-09-13 17:29 ` Lars Ingebrigtsen
2020-09-13 18:07 ` Göktuğ Kayaalp
2020-09-13 15:09 ` Stefan Kangas
2020-09-13 14:54 ` Eli Zaretskii
2020-09-13 14:57 ` Lars Ingebrigtsen
2020-09-13 15:13 ` Eli Zaretskii
2020-09-13 17:15 ` Lars Ingebrigtsen
2020-09-13 15:27 ` Stefan Monnier
2020-09-13 17:31 ` Dmitry Gutov
2020-09-13 17:34 ` Andrea Corallo via Emacs development discussions.
2020-09-16 6:42 ` jeremyb
2020-09-13 15:28 ` Göktuğ Kayaalp
2020-09-13 15:43 ` Óscar Fuentes
2020-09-13 17:07 ` Amin Bandali
2020-09-13 18:01 ` Stephen Leake
2020-09-13 18:17 ` Göktuğ Kayaalp
2020-09-14 3:50 ` Richard Stallman
2020-09-14 19:25 ` David Koppelman
2020-09-15 8:53 ` Lars Brinkhoff
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