From: "Clément Pit--Claudel" <clement.pit@gmail.com>
To: Emacs developers <emacs-devel@gnu.org>
Subject: How do I give an overlay a priority lower to that of hl-line-mode?
Date: Tue, 31 May 2016 00:46:55 -0400 [thread overview]
Message-ID: <574D173F.2070502@gmail.com> (raw)
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Hi emacs-dev,
A mode that I contribute to uses overlays to highlight certain lines. The added overlays typically cover (point-at-bol) .. (1+ (point-at-eol)), which unfortunately does not play nicely with hl-line-mode: my overlays hide the one added by hl-line-mode.
Demo:
(with-current-buffer (get-buffer-create "*hl*")
(erase-buffer)
(fundamental-mode)
(hl-line-mode)
(dotimes (_ 5) (insert "AAAAAAAAAA\n"))
(goto-char 25)
(let ((ov (make-overlay (point-at-bol) (1+ (point-at-eol)))))
(overlay-put ov 'face '(:background "red")))
(pop-to-buffer (current-buffer)))
Of course, the temptation is great to add a little (overlay-put ov 'priority -100), but it's explicitly a bad idea:
> This property’s value determines the priority of the overlay. If you
> want to specify a priority value, use either nil (or zero), or a
> positive integer. Any other value has undefined behavior.
What alternatives do I have? (In fact, do I have any?)
Thanks!
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next reply other threads:[~2016-05-31 4:46 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-31 4:46 Clément Pit--Claudel [this message]
2016-05-31 20:28 ` How do I give an overlay a priority lower to that of hl-line-mode? Stefan Monnier
2016-05-31 20:46 ` Clément Pit--Claudel
2016-06-01 2:29 ` Stefan Monnier
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