From: Bastien <bzg@gnu.org>
To: Eli Zaretskii <eliz@gnu.org>
Cc: emacs-devel@gnu.org
Subject: Re: line-start?
Date: Fri, 07 Feb 2020 11:48:02 +0100 [thread overview]
Message-ID: <878sle7jx9.fsf@gnu.org> (raw)
In-Reply-To: <83zhduelui.fsf@gnu.org> (Eli Zaretskii's message of "Fri, 07 Feb 2020 12:24:37 +0200")
Eli Zaretskii <eliz@gnu.org> writes:
> Then (nth 1) of what posn-at-x-y returns is not what you want. You
> should use the (car (nth 6)) instead.
FWIW I just tried this:
(car (nth 6 (posn-at-x-y
0 (+ (cdr (posn-x-y (posn-at-point pos window)))
(- (nth 1 (window-edges nil t nil t))
(nth 1 (window-edges nil nil nil t)))))))
but it always returns 0.
The version with (nth 1 ...) works fine, though.
>> The use case was this one: given a line, display the content of this
>> line in the header line. When horizontally scrolled, the header has
>> to display a substring of the line under the cursor, something like
>> (substring (current-line-string) offset-in-columns).
>
> But using the buffer position, you could use buffer-substring instead,
> right?
Yes, sure, but I still need to know the window line start to get the
offset.
--
Bastien
next prev parent reply other threads:[~2020-02-07 10:48 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-06 10:24 line-start? Bastien
2020-02-06 13:00 ` line-start? Bastien
2020-02-06 18:25 ` line-start? Eli Zaretskii
2020-02-07 6:42 ` line-start? Bastien
2020-02-07 9:20 ` line-start? Eli Zaretskii
2020-02-07 10:11 ` line-start? Bastien
2020-02-07 10:24 ` line-start? Eli Zaretskii
2020-02-07 10:48 ` Bastien [this message]
2020-02-07 13:43 ` line-start? Eli Zaretskii
2020-02-07 14:46 ` line-start? Bastien
2020-02-07 15:56 ` line-start? Eli Zaretskii
2020-02-07 17:42 ` line-start? Bastien
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=878sle7jx9.fsf@gnu.org \
--to=bzg@gnu.org \
--cc=eliz@gnu.org \
--cc=emacs-devel@gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this external index
https://git.savannah.gnu.org/cgit/emacs.git
https://git.savannah.gnu.org/cgit/emacs/org-mode.git
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.