From: "Lennart Borgman (gmail)" <lennart.borgman@gmail.com>
To: Emacs Devel <emacs-devel@gnu.org>
Subject: Add a function to test for invisible characters?
Date: Mon, 23 Jun 2008 17:33:51 +0200 [thread overview]
Message-ID: <485FC25F.4090407@gmail.com> (raw)
I asked some time ago if a function to test if a character is invisible.
I think nothing has been done to this, or am I mistaken?
I think some code in Emacs currently gets this wrong. Do for example
reveal get this right?
Below is such a function that I use and that I think follow the
specifications for this. Should not something like this be in Emacs?
(defun tabkey2-invisible-p (pos)
"Return non-nil if the character after POS is currently invisible."
(let ((prop (get-char-property pos 'invisible)))
(if (eq buffer-invisibility-spec t)
prop
(if (listp prop)
(catch 'invis
(dolist (p prop)
(when (or (memq p buffer-invisibility-spec)
(assq p buffer-invisibility-spec))
(throw 'invis t))))
(or (memq prop buffer-invisibility-spec)
(assq prop buffer-invisibility-spec))))))
next reply other threads:[~2008-06-23 15:33 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-23 15:33 Lennart Borgman (gmail) [this message]
2008-06-23 18:50 ` Add a function to test for invisible characters? Stefan Monnier
2008-06-23 18:54 ` Lennart Borgman (gmail)
2008-06-23 19:34 ` Lennart Borgman (gmail)
2008-06-23 20:21 ` ken manheimer
2008-06-24 13:39 ` T. V. Raman
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