From: jack-mac <duthen.mac@gmail.com>
To: help-gnu-emacs@gnu.org
Subject: When are the face text properties actually set?
Date: Wed, 13 Jun 2012 07:32:31 -0700 (PDT) [thread overview]
Message-ID: <d2887a54-bb65-4a0f-9e4c-205ab31b4f93@k5g2000vbf.googlegroups.com> (raw)
I'm using GNU Emacs 23.1.1 (i686-pc-linux-gnu, GTK+ Version 2.22.0)
of 2011-03-04 on roseapple, modified by Debian
I start "emacs -Q", open any emacs-lisp file which containing more
than
one page of text. I choose a point (e.g. 2400) which is beyond the
first page and type the following:
M-: (get-text-property 2400 'face) RET
=> nil
M-: (progn (goto-char 2400) (get-text-property 2400 'face))
=> nil
Now, point 2400 is visible.
M-: (get-text-property 2400 'face) RET
=> font-lock-comment-face
The function get-text-property returns nil only when the point given
as argument has not yet been displayed.
So, I can reproduce it each time I close and reopen the file. (C-x C-v
RET)
Is this normal or is it a bug?
If it's normal, is there any way to force the text properties to be
set the way they will be set when the point is displayed?
I mean: I just want (get-text-property 2400 'face) to return the text
property whether it has already been displayed or not!
I tried the following which works more or less:
M-: (progn (goto-char 2400) (sit-for 0) (get-text-property
2400 'face))
=> font-lock-comment-face
but, if I use it inside my personal search and replace function, the
text is continuously scrolled all over the file, which is quite
disturbing.
I also tried M-x font-lock-fontify-buffer but it did not change
anything.
And there is no lazy-font anymore in the emacs I use.
Thanks in advance
)jack(
next reply other threads:[~2012-06-13 14:32 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-13 14:32 jack-mac [this message]
2012-06-13 15:18 ` When are the face text properties actually set? Stefan Monnier
2012-06-14 7:43 ` jack-mac
2012-06-14 8:40 ` jack-mac
2012-06-14 19:16 ` Stefan Monnier
2012-06-18 9:17 ` jack-mac
2012-06-13 15:39 ` Eli Zaretskii
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