GNU bug report logs -
#2650
Add "lisp/term/screen.el" to support GNU Screen's 256 colors mode
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Reported by: Prestoo Ten <prestooten <at> gmail.com>
Date: Thu, 12 Mar 2009 19:55:04 UTC
Severity: wishlist
Tags: patch
Fixed in version 24.1
Done: Glenn Morris <rgm <at> gnu.org>
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(Thu, 12 Mar 2009 19:55:04 GMT)
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(Thu, 12 Mar 2009 19:55:04 GMT)
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Message #5 received at submit <at> emacsbugs.donarmstrong.com (full text, mbox):
Please consider adding the file "lisp/term/screen.el" with the
following contents to support GNU Screen's "screen-256color" terminal
type:
(load "term/xterm")
(defun terminal-init-screen ()
"Terminal initialization function for screen."
;; Use the xterm color initialization code.
(xterm-register-default-colors)
(tty-set-up-initial-frame-faces))
See discussion in the following threads on the emacs-devel mailing list:
http://article.gmane.org/gmane.emacs.devel/87582/
http://article.gmane.org/gmane.emacs.devel/109504/
Severity set to `wishlist' from `normal'
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(Fri, 13 Mar 2009 02:40:04 GMT)
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Added tag(s) patch.
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(Mon, 25 Jan 2010 22:36:02 GMT)
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(Fri, 30 Jul 2010 21:37:02 GMT)
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Message #12 received at 2650 <at> debbugs.gnu.org (full text, mbox):
On Thu, 12 Mar 2009, Prestoo Ten wrote:
> Please consider adding the file "lisp/term/screen.el" with the
> following contents to support GNU Screen's "screen-256color" terminal
> type:
Note that lisp/faces.el has a heuristic [1] that assumes the terminal has
a light background for TERM={xterm*,rxvt*,dtterm*,eterm*}, but a dark
background for other TERMs including TERM=screen*. So you may also need
to customize frame-background-mode to 'light to prevent the default colors
from becoming unreadably bright. Perhaps the heuristic should be updated?
[1] http://repo.or.cz/w/emacs.git/blob/EMACS_23_2:/lisp/faces.el#l1876
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(Sun, 27 Feb 2011 20:58:02 GMT)
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Message #15 received at 2650 <at> debbugs.gnu.org (full text, mbox):
Hi Anders, Prestoo,
today I discovered this thread and I'm happy to use Prestoo's
solution:
* Anders Kaseorg <andersk <at> MIT.EDU> [30. Jul. 2010]:
> On Thu, 12 Mar 2009, Prestoo Ten wrote:
>> Please consider adding the file "lisp/term/screen.el" with the
>> following contents to support GNU Screen's "screen-256color" terminal
>> type:
>
> Note that lisp/faces.el has a heuristic [1] that assumes the terminal has
> a light background for TERM={xterm*,rxvt*,dtterm*,eterm*}, but a dark
> background for other TERMs including TERM=screen*. So you may also need
> to customize frame-background-mode to 'light to prevent the default colors
> from becoming unreadably bright.
By chance my background is dark, so no problem for me.
I tested what would happen if my background was white without
other customisations (emacs -Q; screen -c /dev/null) with an
org-mode file. It is really barely readable.
That's not the case without screen, because Emacs then recognises
the brightness of the terminal emulators background (at least for
white and black) and adjusts the faces colours.
So, if I used white backround with screen I would have to
customise frame-background-mode via .emacs or utilise .Xdefaults.
But this should not hinder the inclusion of the file
lisp/termscreen.el as provided by the OP.
> Perhaps the heuristic should be updated?
>
> [1] http://repo.or.cz/w/emacs.git/blob/EMACS_23_2:/lisp/faces.el#l1876
That's still the same in Emacs trunk. This is way beyond my
elisp literacy. But Emacs somehow realises is background is dark
or light if invoked in a rxvt-unicode or xterm terminal emulator
window. This is for some reason not the case when invoked in a
screen session which in turn is invoked in a rxvt-unicode or
xterm. Perhaps it is somehow possible to detect the background
brightness in screen too?
Thanks, Gregor
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(Sun, 27 Feb 2011 21:29:01 GMT)
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Message #18 received at 2650 <at> debbugs.gnu.org (full text, mbox):
I've added term/screen.el to the trunk.
bug marked as fixed in version 24.1, send any further explanations to
2650 <at> debbugs.gnu.org and Prestoo Ten <prestooten <at> gmail.com>
Request was from
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(Tue, 27 Mar 2012 19:31:02 GMT)
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bug archived.
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(Wed, 25 Apr 2012 11:24:04 GMT)
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This bug report was last modified 12 years and 267 days ago.
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