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bug#14157: 24.3.50; Improve facemenu.el: Better "integration" with other
From: |
Jambunathan K |
Subject: |
bug#14157: 24.3.50; Improve facemenu.el: Better "integration" with other libraries |
Date: |
Wed, 10 Apr 2013 09:20:45 +0530 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) |
Should facemenu.el use overlays for highlighting?
facemenu.el, "works" only for certain modes. More specifically it works
only for those modes that defines a `facemenu-enable-faces-p'. Start
exploring with the following snippet
,---- See facemenu-add-face
|
| (unless (facemenu-enable-faces-p)
| (message "Font-lock mode will override any faces you set in this buffer"))
`----
One main disadvantage of not using overlays is that Orgmode cannot be
used in conjunction with enriched mode. See the following threads
1. http://lists.gnu.org/archive/html/emacs-orgmode/2011-11/msg00990.html
Here the user wants to hide a piece of text. He is probably a
student trying to recall a piece of memorized information.
Is it possible to have an "invisible face". A text having this face
will not be displayed at all.
2. http://lists.gnu.org/archive/html/emacs-orgmode/2010-08/msg00179.html
Lots of cross talk here.
3. http://lists.gnu.org/archive/html/emacs-orgmode/2013-03/msg01277.html
and
http://lists.gnu.org/archive/html/emacs-orgmode/2013-03/msg01287.html
,----
| I (actually me and several colleagues here at the school of public
| health at Harvard) have been using for the past 4 years a note taking
| app called notecase pro (http://www.notecasepro.com/) which is nice but
| not FLOSS and lacking in other areas. I am a post doc who takes alot of
| notes (30-40) daily which include images and color markings.
|
| colors are especially important to us since we use them to mark
| different commands, research areas, paths, comments and warning so that
| we have a clear easy to remember color visual clue. We use 15-20 color
| fg/bg commands. An example note could look like this:
|
| http://i.imgur.com/Ncq6ozs.png
`----
The notion of persistence of face properties (as in serializing/encoding
face properties in to the edited text - either tex mode, sgml mode or
more importantly enriched mode) is "in built" in to facemenu.el. It is
not necessary that a highlighted text be encoded/persisted in to the
saved file. I could be reviewing a piece of text and might want to do
"on the go" highlighting some phrases to take notes without saving it
anyway.
Color-coding of text is indeed an effective note-taking tool.
Side note:
Since Org mode format is frozen for maximum portability, there is a lot
of resistance on the part of Org mode developers to re-define - C-h v
org-emphasis-alist - to mean more colourful things. So emphasis is
limited to insipid things like bold, italic etc.
IMNSHO, coloring of text can co-exist with Org mode. This without the
Orgmode format extended or enhanced.
With facemenu using overlays and very minor adjustments elsewhere, an
enriched/Org mode is possible. Here the Orgmode parser could be
*oblivious* of the fact that enriched encoding is actually in use and
rely on the facemenu/enriched mode do encode or decode enriched markup.
The format used by "Enriched text" is not popular or well-known.
However, that shouldn't limit chaps who aren't interested in cross
editor or cross platform portability to extract last bit of juice out of
Emacs.