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Re: line-number-mode at EOB
From: |
Stephen Berman |
Subject: |
Re: line-number-mode at EOB |
Date: |
Tue, 18 Jul 2017 22:38:36 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.0.50 (gnu/linux) |
On Tue, 18 Jul 2017 22:03:47 +0300 Eli Zaretskii <address@hidden> 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
- Re: line-number-mode at EOB, (continued)
- Re: line-number-mode at EOB, Stefan Monnier, 2017/07/18
- Re: line-number-mode at EOB, Eli Zaretskii, 2017/07/18
- Re: line-number-mode at EOB, Stefan Monnier, 2017/07/18
- Re: line-number-mode at EOB, Paul Eggert, 2017/07/20
- Re: line-number-mode at EOB, Stephen Berman, 2017/07/20
- Re: line-number-mode at EOB, Paul Eggert, 2017/07/20
- Re: line-number-mode at EOB, Stephen Berman, 2017/07/20
Re: line-number-mode at EOB (was: Native display of line numbers, improved), Eli Zaretskii, 2017/07/18