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From: Stephen Berman <stephen.berman@gmx.net>
To: Eli Zaretskii <eliz@gnu.org>
Cc: emacs-devel@gnu.org
Subject: Re: line-number-mode at EOB
Date: Tue, 18 Jul 2017 22:38:36 +0200	[thread overview]
Message-ID: <87shhta3ar.fsf@rosalinde> (raw)
In-Reply-To: <834lu9d0to.fsf@gnu.org> (Eli Zaretskii's message of "Tue, 18 Jul 2017 22:03:47 +0300")

On Tue, 18 Jul 2017 22:03:47 +0300 Eli Zaretskii <eliz@gnu.org> wrote:

> In any case, I don't think that what-line should be changed, because
> it's used elsewhere, and such a change is backward-incompatible.

According to rgrep, what-line occurs in these Emacs Lisp libraries:
vi.el, tpu-edt.el (both in obsolete/), f90.el, view.el, and edt.el.  In
all but one case, it's used just as a command to return the line number
at point, so for these it would be no problem if it returned "EOB" at
EOB.  The exception is f90.el, which uses it noninteractively:

                  (message "Matches %s: %s"
                           (what-line)
                           (buffer-substring
                            (line-beginning-position)
                            (line-end-position)))

I think this could only be problematic if EOB is not preceded by a
newline: then it would indeed be necessary to change the caller to
ensure that point isn't at EOB.  Alternatively, what-line could be
changed so that in noninteractive uses it always returns a line number,
even at EOB.

But anyway, it seems like the idea of not displaying a line number in
the mode line at EOB is at best too controversial to accept outright,
since there are incompatible intuitions about whether EOB is a line
(when preceded by a newline).  Given that, if it were to be included in
Emacs at all, then it should be conditioned by a user option.

Steve Berman



  reply	other threads:[~2017-07-18 20:38 UTC|newest]

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-24 17:27 Native display of line numbers, improved Eli Zaretskii
2017-06-24 18:40 ` Clément Pit-Claudel
2017-06-24 18:51   ` Eli Zaretskii
2017-06-24 20:53 ` Stephen Berman
2017-06-25 14:07   ` Eli Zaretskii
2017-06-25 14:34     ` Stephen Berman
2017-06-25 15:10       ` Eli Zaretskii
2017-06-25 15:41         ` Stephen Berman
2017-06-25 16:02           ` Eli Zaretskii
2017-06-25 19:00             ` Stephen Berman
2017-06-24 21:23 ` Stephen Berman
2017-06-25 14:03   ` Eli Zaretskii
2017-06-25 14:34     ` Stephen Berman
2017-06-25 14:57       ` Eli Zaretskii
2017-07-17 22:20       ` line-number-mode at EOB (was: Native display of line numbers, improved) Stephen Berman
2017-07-18  4:16         ` line-number-mode at EOB Stefan Monnier
2017-07-18 14:04           ` Stephen Berman
2017-07-18 14:30             ` Stefan Monnier
2017-07-18 14:51               ` Eli Zaretskii
2017-07-18 15:04                 ` Stefan Monnier
2017-07-20 20:25                   ` Paul Eggert
2017-07-20 20:43                     ` Stephen Berman
2017-07-20 21:19                       ` Paul Eggert
2017-07-20 21:35                         ` Stephen Berman
2017-07-18 14:55         ` line-number-mode at EOB (was: Native display of line numbers, improved) Eli Zaretskii
2017-07-18 16:33           ` line-number-mode at EOB Stephen Berman
2017-07-18 19:03             ` Eli Zaretskii
2017-07-18 20:38               ` Stephen Berman [this message]
2017-06-25  9:59 ` Native display of line numbers, improved martin rudalics
2017-06-25 13:54   ` Eli Zaretskii
2017-06-25 15:58     ` martin rudalics
2017-06-25 20:30 ` Alex
2017-06-26  2:39   ` Eli Zaretskii
2017-06-26  3:43     ` Alex
2017-06-26  3:50       ` Alex
2017-06-26 14:58         ` Eli Zaretskii
2017-06-26 19:41           ` Alex
2017-06-27 14:25             ` Eli Zaretskii
2017-06-29 20:25               ` Native line numbers column disappears at times Kaushal Modi
2017-06-30  6:00                 ` Eli Zaretskii
2017-07-10 18:53                   ` Kaushal Modi
2017-07-10 19:31                     ` Eli Zaretskii
2017-07-10 20:56                       ` Kaushal Modi
2017-06-26 14:54       ` Native display of line numbers, improved Eli Zaretskii
2017-06-26 15:28         ` Stefan Monnier
2017-06-26 15:56           ` Eli Zaretskii
2017-06-26 16:12             ` Stefan Monnier
2017-06-26 16:26               ` Eli Zaretskii
2017-06-26 19:36             ` Alex

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