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Drop Emacs 26.x support

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Emacs 27.x has been the stable version of Emacs for nearly a year, and
introduces a litany of bugfixes, performance, and quality-of-life
improvements that significantly reduce Doom's maintenance burden (like
XDG support, early-init.el, image manipulation without imagemagick, a
native JSON library, harfbuzz support, pdumper, and others).

With so many big changes on Doom's horizon, I like having one less (big)
thing to worry about.

Also reverts bb677cf7a (#5232) as it is no longer needed.
This commit is contained in:
Henrik Lissner 2021-07-06 01:54:32 -04:00
parent ff2d56794e
commit 044a1a5f2b
19 changed files with 58 additions and 326 deletions
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56
modules/os/tty/README.org
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@ -56,59 +56,11 @@ need:
* Configuration
** True-color and italic support
#+begin_quote
This advice only applies to Emacs 26.x. True color support is [[https://github.com/emacs-mirror/emacs/commit/7f6153d9563cfe7753083996f59eacc9f4c694df][built into 27.1+
and newer]].
#+end_quote
Emacs 26.3 users should consult [[https://github.com/syl20bnr/spacemacs/wiki/Terminal][the spacemacs wiki]] for details on achieving true
color support in terminal Emacs.
(credit goes to [[https://github.com/syl20bnr/spacemacs/wiki/Terminal][the spacemacs wiki]] for this information)
Create a =xterm-24bit.terminfo= file with the following contents:
#+BEGIN_SRC text
xterm-24bit|xterm with 24-bit direct color mode,
use=xterm-256color,
sitm=\E[3m,
ritm=\E[23m,
setb24=\E[48;2;%p1%{65536}%/%d;%p1%{256}%/%{255}%&%d;%p1%{255}%&%dm,
setf24=\E[38;2;%p1%{65536}%/%d;%p1%{256}%/%{255}%&%d;%p1%{255}%&%dm,
#+END_SRC
#+begin_quote
WARNING: Make sure you have a newline at end of file otherwise you will get
errors!
#+end_quote
Execute the following command on the command line:
#+BEGIN_SRC sh
tic -x -o ~/.terminfo xterm-24bit.terminfo
#+END_SRC
Now set your ~$TERM~ variable to ~xterm-24bit~:
#+BEGIN_SRC sh
export TERM=xterm-24bit
#+END_SRC
SSH might break if your remote machine does not have the same setup, you can
work around this with the following alias.
#+BEGIN_SRC sh
alias ssh="TERM=xterm-256color ssh"
#+END_SRC
If you use tmux, you need to make sure you installed a version with truecolor
support, then add the following lines to your `.tmux.conf`:
#+BEGIN_SRC conf
set -g default-terminal "xterm-24bit"
set -g terminal-overrides ',xterm-24bit:Tc'
#+END_SRC
Also, make sure you have utf8 language variables if you want all characters to
display correctly. For example:
#+BEGIN_SRC bash
export LC_ALL=en_US.UTF-8
export LANG=en_US.UTF-8
export LANGUAGE=en_US.UTF-8
#+END_SRC
Emacs 27.x users don't need todo anything, as true color support is [[https://github.com/emacs-mirror/emacs/commit/7f6153d9563cfe7753083996f59eacc9f4c694df][built into
27.1+ and newer]].
* Troubleshooting
# Common issues and their solution, or places to look for help.