Drop Emacs 26.x support

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.

README.md

@@ -5,7 +5,7 @@
 [Install](#install) • [Documentation] • [FAQ] • [Screenshots] • [Contribute](#contribute)
 
 ![Made with Doom Emacs](https://img.shields.io/github/tag/hlissner/doom-emacs.svg?style=flat-square&label=release&color=58839b)
-![Minimum Emacs version supported: 26.3](https://img.shields.io/badge/Emacs-26.3+-blueviolet.svg?style=flat-square&logo=GNU%20Emacs&logoColor=white)
+![Minimum Emacs version supported: 27.1](https://img.shields.io/badge/Emacs-27.1+-blueviolet.svg?style=flat-square&logo=GNU%20Emacs&logoColor=white)
 ![Latest commit](https://img.shields.io/github/last-commit/hlissner/doom-emacs/develop?style=flat-square)
 ![Build status: develop](https://img.shields.io/github/workflow/status/hlissner/doom-emacs/CI/develop?style=flat-square)
 [![Discord Server](https://img.shields.io/discord/406534637242810369?color=738adb&label=Discord&logo=discord&logoColor=white&style=flat-square)][Discord]
@@ -99,7 +99,7 @@ Check out [the FAQ][FAQ] for answers to common questions about the project.
 
 # Prerequisites
 + Git 2.23+
-+ Emacs 26.3+ (*27.2 is recommended*, or [native-comp](https://www.emacswiki.org/emacs/GccEmacs)).
++ Emacs 27.1+ (*27.2 is recommended*, or [native-comp](https://www.emacswiki.org/emacs/GccEmacs)).
 + [ripgrep] 11.0+
 + GNU `find`
 + *OPTIONAL:* [fd] 7.3.0+ (improves file indexing performance for some commands)

bin/doom

@@ -27,11 +27,11 @@
 ;;
 ;;; Sanity checks
 
-(when (version< emacs-version "26.3")
+(when (version< emacs-version "27.1")
   (error
    (concat "Detected Emacs " emacs-version " (at " (car command-line-args) ").\n\n"
-           "Doom only supports Emacs 26.3 and newer. 27.1 is highly recommended. A guide\n"
+           "Doom only supports Emacs 27.1 and newer. A guide to install a newer version\n"
-           "to install a newer version of Emacs can be found at:\n\n  "
+           "of Emacs can be found at:\n\n  "
            (format "https://doomemacs.org/docs/getting_started.org#%s"
                    (cond ((eq system-type 'darwin) "on-macos")
                          ((memq system-type '(cygwin windows-nt ms-dos)) "on-windows")

core/autoload/themes.el

@@ -40,9 +40,7 @@ all themes. It will apply to all themes once they are loaded."
        (when (or (get 'doom-theme 'previous-themes)
                  (null doom-theme))
          (funcall #',fn))
-       ;; TODO Append to `doom-load-theme-hook' with DEPTH instead when Emacs
+       (add-hook 'doom-customize-theme-hook #',fn 100))))
-       ;;      26.x support is dropped.
-       (add-hook 'doom-customize-theme-hook #',fn 'append))))
 
 ;;;###autoload
 (defmacro custom-set-faces! (&rest specs)

core/cli/doctor.el

@@ -54,10 +54,8 @@ in."
      (warn! "Emacs %s detected" emacs-version)
      (explain! "Doom supports this version, but you are living on the edge! "
                "Be prepared for breakages in future versions of Emacs."))
-    ((= emacs-major-version 26)
+    ((< emacs-major-version 27)
-     (warn! "Emacs %s detected" emacs-version)
+     (error! "Emacs %s detected, Doom only supports 27.1 and newer"
-     (explain! "Doom is dropping Emacs 26.x support in June 2021. Consider "
-               "upgrading to Emacs 27.1 (or better: 27.2) soon!"
              emacs-version))))
 
   (print! (start "Checking for Doom's prerequisites..."))

core/core-lib.el

@@ -625,72 +625,7 @@ testing advice (when combined with `rotate-text').
 ;;
 ;;; Backports
 
-(eval-when! (version< emacs-version "27.0.90")
+;; None at the moment!
-  ;; DEPRECATED Backported from Emacs 27
-  (defmacro setq-local (&rest pairs)
-    "Make variables in PAIRS buffer-local and assign them the corresponding values.
-
-PAIRS is a list of variable/value pairs.  For each variable, make
-it buffer-local and assign it the corresponding value.  The
-variables are literal symbols and should not be quoted.
-
-The second VALUE is not computed until after the first VARIABLE
-is set, and so on; each VALUE can use the new value of variables
-set earlier in the ‘setq-local’.  The return value of the
-‘setq-local’ form is the value of the last VALUE.
-
-\(fn [VARIABLE VALUE]...)"
-    (declare (debug setq))
-    (unless (zerop (mod (length pairs) 2))
-      (error "PAIRS must have an even number of variable/value members"))
-    (let ((expr nil))
-      (while pairs
-        (unless (symbolp (car pairs))
-          (error "Attempting to set a non-symbol: %s" (car pairs)))
-        ;; Can't use backquote here, it's too early in the bootstrap.
-        (setq expr
-              (cons
-               (list 'set
-                     (list 'make-local-variable (list 'quote (car pairs)))
-                     (car (cdr pairs)))
-               expr))
-        (setq pairs (cdr (cdr pairs))))
-      (macroexp-progn (nreverse expr)))))
-
-(eval-when! (version< emacs-version "27.1")
-  ;; DEPRECATED Backported from Emacs 27. Remove when 26.x support is dropped.
-  (defun executable-find (command &optional remote)
-    "Search for COMMAND in `exec-path' and return the absolute file name.
-Return nil if COMMAND is not found anywhere in `exec-path'.  If
-REMOTE is non-nil, search on the remote host indicated by
-`default-directory' instead."
-    (if (and remote (file-remote-p default-directory))
-        (let ((res (locate-file
-                    command
-                    (mapcar
-                     (lambda (x) (concat (file-remote-p default-directory) x))
-                     (exec-path))
-                    exec-suffixes 'file-executable-p)))
-          (when (stringp res) (file-local-name res)))
-      ;; Use 1 rather than file-executable-p to better match the
-      ;; behavior of call-process.
-      (let ((default-directory
-              (let (file-name-handler-alist)
-                (file-name-quote default-directory))))
-        (locate-file command exec-path exec-suffixes 1)))))
-
-(eval-when! (not (fboundp 'exec-path))
-  ;; DEPRECATED Backported from Emacs 27.1. Remove when 26.x support is dropped.
-  (defun exec-path ()
-    "Return list of directories to search programs to run in remote subprocesses.
-The remote host is identified by `default-directory'.  For remote
-hosts that do not support subprocesses, this returns `nil'.
-If `default-directory' is a local directory, this function returns
-the value of the variable `exec-path'."
-    (let ((handler (find-file-name-handler default-directory 'exec-path)))
-      (if handler
-          (funcall handler 'exec-path)
-        exec-path))))
 
 (provide 'core-lib)
 ;;; core-lib.el ends here

core/core-ui.el

@@ -667,16 +667,17 @@ windows, switch to `doom-fallback-buffer'. Otherwise, delegate to original
   (dolist (fn '(switch-to-buffer display-buffer))
     (advice-add fn :around #'doom-run-switch-buffer-hooks-a)))
 
+;; Apply `doom-font' et co
+(add-hook 'doom-after-init-modules-hook #'doom-init-fonts-h -100)
+
 ;; Apply `doom-theme'
 (add-hook (if (daemonp)
               'after-make-frame-functions
             'doom-after-init-modules-hook)
-          #'doom-init-theme-h)
+          #'doom-init-theme-h
+          -90)
 
-;; Apply `doom-font' et co
+(add-hook 'window-setup-hook #'doom-init-ui-h 100)
-(add-hook 'doom-after-init-modules-hook #'doom-init-fonts-h)
-
-(add-hook 'window-setup-hook #'doom-init-ui-h 'append)
 
 
 ;;
@@ -702,25 +703,11 @@ windows, switch to `doom-fallback-buffer'. Otherwise, delegate to original
   (fset 'define-fringe-bitmap #'ignore))
 
 (after! whitespace
-  (defun doom-disable-whitespace-mode-in-childframes-a (orig-fn)
+  (defun doom-is-childframes-p ()
     "`whitespace-mode' inundates child frames with whitespace markers, so
 disable it to fix all that visual noise."
-    (unless (frame-parameter nil 'parent-frame)
+    (frame-parameter nil 'parent-frame))
-      (funcall orig-fn)))
+  (add-function :before-while whitespace-enable-predicate #'doom-is-childframes-p))
-  (add-function :around whitespace-enable-predicate #'doom-disable-whitespace-mode-in-childframes-a))
-
-;; Don't display messages in the minibuffer when using the minibuffer
-;; DEPRECATED Remove when Emacs 26.x support is dropped.
-(eval-when! (not EMACS27+)
-  (defmacro doom-silence-motion-key (command key)
-    (let ((key-command (intern (format "doom/silent-%s" command))))
-      `(progn
-         (defun ,key-command ()
-           (interactive)
-           (ignore-errors (call-interactively ',command)))
-         (define-key minibuffer-local-map (kbd ,key) #',key-command))))
-  (doom-silence-motion-key backward-delete-char "<backspace>")
-  (doom-silence-motion-key delete-char "<delete>"))
 
 (provide 'core-ui)
 ;;; core-ui.el ends here

core/core.el

@@ -355,7 +355,6 @@ config.el instead."
       (when (boundp 'libgnutls-version)
         (concat "SECURE128:+SECURE192:-VERS-ALL"
                 (if (and (not IS-WINDOWS)
-                         (not (version< emacs-version "26.3"))
                          (>= libgnutls-version 30605))
                     ":+VERS-TLS1.3")
                 ":+VERS-TLS1.2"))

core/packages.el

@@ -37,8 +37,6 @@
 (package! helpful :pin "7e4b1f0d5572a4e2b8ee7a9b084ef863d0315a73")
 (package! pcre2el :pin "0b5b2a2c173aab3fd14aac6cf5e90ad3bf58fa7d")
 (package! smartparens :pin "911cc896a0f2eb8b5fbdd6fc8331523ad9889a3a")
-;; DEPRECATED Built into Emacs 27+; remove when we drop 26 support
-(package! so-long :built-in 'prefer :pin "1da43ed63b5f9a8188eb8107bbad842d10831537")
 (package! ws-butler
   ;; Use my fork of ws-butler, which has a few choice improvements and
   ;; optimizations (the original has been abandoned).

docs/getting_started.org

@@ -97,7 +97,7 @@ us know!
 This is what you'll have installed by the end of this section:
 
 - Git 2.23+
-- Emacs 26.3+ *(27.2 is recommended, or [[https://www.emacswiki.org/emacs/GccEmacs][native-comp]])*
+- Emacs 27.1+ *(27.2 is recommended, or [[https://www.emacswiki.org/emacs/GccEmacs][native-comp]])*
 - [[https://github.com/BurntSushi/ripgrep][ripgrep]] 11.0+
 - GNU Find
 - (Optional) [[https://github.com/sharkdp/fd][fd]] 7.3.0+ (known as ~fd-find~ on Debian, Ubuntu & derivatives) --
@@ -107,20 +107,15 @@ These packages ought to be available through the package managers of your
 operating system; i.e. homebrew & macports on macOS, scoop/chocolatey on
 Windows, or pacman/aptitude/etc on the various Linux distributions.
 
-#+begin_quote
-While Doom does claim to support 26.x, 27.x is recommended because it is faster,
-especially for LSP users. The installation guides below will touch on installing
-27 if there is a simple way to do so on that particular operating system.
-#+end_quote
-
 ** Emacs & dependencies
 *** On Linux
-In the unusual case that Emacs 26.x is unavailable through your package manager,
+Installation instructions for Emacs 27.1+ are listed below for many popular
-you'll have to [[https://www.gnu.org/software/emacs/manual/html_node/efaq/Installing-Emacs.html][build it from source]], but here are installation instructions for many popular Linux distributions:
+Linux distributions. In the unusual case that 27.1 or newer is unavailable on
+your system, you'll have to [[https://www.gnu.org/software/emacs/manual/html_node/efaq/Installing-Emacs.html][build it from source]] instead.
 
 **** Ubuntu
-Emacs 27.x is not available through Ubuntu's package manager out-of-the-box. To
+Emacs 27.x is not available through Ubuntu's package manager out-of-the-box, but
-get around this you'll need to install Emacs through a PPA:
+is available through a PPA:
 
 #+BEGIN_SRC bash
 add-apt-repository ppa:kelleyk/emacs
@@ -164,8 +159,9 @@ pacman -S fd
 The above installs Emacs 27 (at the time of writing).
 
 **** NixOS
-On NixOS Emacs 26.3 can be installed via ~nix-env -Ai nixos.emacs~, or
+On NixOS Emacs 27.2 can be installed via ~nix-env -Ai nixos.emacs~, or
 permanently with the following added to ~etc/nixos/configuration.nix~:
+
 #+BEGIN_SRC nix
 environment.systemPackages = with pkgs; [
   # required dependencies
@@ -191,7 +187,7 @@ environment.systemPackages = [
 #+END_SRC
 
 **** openSUSE
-***** Emacs 26.3
+***** Emacs 27.1
 Emacs can be installed from the [[https://software.opensuse.org/download.html?project=editors&package=emacs][package list]], or manually via zypper.
 
 For example, to install on openSUSE Leap 15.1 (requires root):
@@ -202,7 +198,7 @@ zypper install emacs
 #+END_SRC
 
 If you already have an older version of Emacs installed, you will be prompted to
-install the update candidate (Emacs 26.3).
+install the update candidate (Emacs 27.1).
 
 ***** ripgrep
 Download ripgrep 11.0.2 from [[https://software.opensuse.org/download/package?package=ripgrep&project=openSUSE%3AFactory][the package list]] or installed manually (requires
@@ -305,16 +301,16 @@ Or by replacing ~/usr/local/bin/emacs~ with a shim script containing:
 There are some suggestions on how to speed it up later in this section.
 #+end_quote
 
-There are three methods for installing Emacs 26.x on Windows, each with their
+There are three methods for installing Emacs 27.x on Windows, each with their
 pros and cons:
 
 + With chocolatey/scoop
 + With a precompiled binary + Git Bash
-+ With WSL + Ubuntu
++ With WSL2 + Ubuntu
 
-If you don't know which to choose, I recommend WSL; it produces the fastest and
+If you don't know which to choose, I highly recommend WSL; it produces the
-most stable environment of the three, but has the most complex installation
+fastest and most stable environment of the three, but has the most complex
-process.
+installation process.
 
 Before moving on to installing Emacs et co, a few steps to prepare Windows for
 Emacs are necessary:
@@ -405,7 +401,7 @@ bin/doom command.
    #+BEGIN_SRC sh
    sudo add-apt-repository ppa:kelleyk/emacs
    sudo apt update
-   sudo apt install emacs26
+   sudo apt install emacs27
    #+END_SRC
 7. Then Doom's dependencies:
    #+BEGIN_SRC sh

docs/modules.org

@@ -203,7 +203,6 @@ Aesthetic modules that affect the Emacs interface or user experience.
 + [[file:../modules/ui/doom-dashboard/README.org][doom-dashboard]] - TODO
 + [[file:../modules/ui/doom-quit/README.org][doom-quit]] - TODO
 + [[file:../modules/ui/emoji/README.org][emoji]] =+ascii +github +unicode= - Adds emoji support to Emacs
-+ [[file:../modules/ui/fill-column/README.org][fill-column]] - TODO
 + [[file:../modules/ui/hl-todo/README.org][hl-todo]] - TODO
 + [[file:../modules/ui/hydra/README.org][hydra]] - TODO
 + indent-guides - TODO

init.example.el

@@ -31,7 +31,6 @@
        doom-dashboard    ; a nifty splash screen for Emacs
        doom-quit         ; DOOM quit-message prompts when you quit Emacs
        ;;(emoji +unicode)  ; 🙂
-       ;;fill-column       ; a `fill-column' indicator
        hl-todo           ; highlight TODO/FIXME/NOTE/DEPRECATED/HACK/REVIEW
        ;;hydra
        ;;indent-guides     ; highlighted indent columns

modules/lang/org/config.el

@@ -274,16 +274,7 @@ Also adds support for a `:sync' parameter to override `:async'."
     ;; TODO Should be fixed upstream
     (let ((default-directory (org-find-library-dir "org-contribdir")))
       (setq org-ditaa-jar-path     (expand-file-name "scripts/ditaa.jar")
-            org-ditaa-eps-jar-path (expand-file-name "scripts/DitaaEps.jar"))))
+            org-ditaa-eps-jar-path (expand-file-name "scripts/DitaaEps.jar")))))
-
-  ;; NOTE Backported from Emacs 27.1
-  ;; DEPRECATED Remove when 26.x support is dropped
-  (unless EMACS27+
-    (defadvice! +org--dont-suppress-window-changes-a (orig-fn &rest args)
-      :around #'org-babel-execute:emacs-lisp
-      (letf! ((#'current-window-configuration #'ignore)
-              (#'set-window-configuration #'ignore))
-        (apply orig-fn args)))))
 
 
 (defun +org-init-babel-lazy-loader-h ()

modules/os/tty/README.org

@@ -56,59 +56,11 @@ need:
 
 * Configuration
 ** True-color and italic support
-#+begin_quote
+Emacs 26.3 users should consult [[https://github.com/syl20bnr/spacemacs/wiki/Terminal][the spacemacs wiki]] for details on achieving true
-This advice only applies to Emacs 26.x. True color support is [[https://github.com/emacs-mirror/emacs/commit/7f6153d9563cfe7753083996f59eacc9f4c694df][built into 27.1+
+color support in terminal Emacs.
-and newer]].
-#+end_quote
 
-(credit goes to [[https://github.com/syl20bnr/spacemacs/wiki/Terminal][the spacemacs wiki]] for this information)
+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]].
-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
 
 * Troubleshooting
 # Common issues and their solution, or places to look for help.

modules/tools/direnv/config.el

@@ -8,25 +8,20 @@
 
   (set-popup-rule! "^\\*envrc\\*" :quit t :ttl 0)
 
-  ;; I'm avoiding `global-envrc-mode' intentionally, because it has the
+  ;; A globalized minor mode triggers on `after-change-major-mode-hook'
-  ;; potential to run too late in the mode startup process (and after, say,
+  ;; normally, which runs after a major mode's body and hooks. If those hooks do
-  ;; server hooks that may rely on that local direnv environment).
+  ;; any initialization work that's sensitive to environmental state set up by
-  (add-hook! 'change-major-mode-after-body-hook
+  ;; direnv, then you're gonna have a bad time, so I move the trigger to
-    (defun +direnv-init-h ()
+  ;; `change-major-mode-after-body-hook' instead. This runs before said hooks
-      (unless (or envrc-mode
+  ;; (but not the body; fingers crossed that no major mode does important env
-                  (minibufferp)
+  ;; initialization there).
-                  (file-remote-p default-directory))
+  (add-hook! 'envrc-global-mode-hook
-        (condition-case _
+    (defun +direnv-init-global-mode-earlier-h ()
-            (envrc-mode 1)
+      (let ((fn #'envrc-global-mode-enable-in-buffers))
-          (quit)))))
+        (if (not envrc-global-mode)
-
+            (remove-hook 'change-major-mode-after-body-hook fn)
-  ;; Ensure these local variables survive major mode changes, so envrc-mode is
+          (remove-hook 'after-change-major-mode-hook fn)
-  ;; only "activated" once per buffer.
+          (add-hook 'change-major-mode-after-body-hook fn 100)))))
-  (put 'envrc-mode 'permanent-local t)
-  (put 'envrc--status 'permanent-local t)
-  (put 'process-environment 'permanent-local t)
-  (put 'exec-path 'permanent-local t)
-  (put 'eshell-path-env 'permanent-local t)
 
   (defadvice! +direnv--fail-gracefully-a (&rest _)
     "Don't try to use direnv if the executable isn't present."

modules/tools/lsp/+lsp.el

@@ -183,9 +183,9 @@ instead is more sensible."
         ;; and there is a bug preventing Flycheck errors from being shown (the
         ;; errors flash briefly and then disappear).
         lsp-ui-sideline-show-hover nil
-        ;; Some icons don't scale correctly on Emacs 26, so disable them there.
+        ;; Re-enable icon scaling (it's disabled by default upstream for Emacs
-        lsp-ui-sideline-actions-icon  ; DEPRECATED Remove later
+        ;; 26.x compatibility; see emacs-lsp/lsp-ui#573)
-        (if EMACS27+ lsp-ui-sideline-actions-icon-default)
+        lsp-ui-sideline-actions-icon t
         ;; REVIEW Temporarily disabled, due to immense slowness on every
         ;;        keypress. See emacs-lsp/lsp-ui#613
         lsp-ui-doc-enable nil)

modules/tools/pdf/config.el

@@ -126,9 +126,7 @@
   (defadvice! +pdf-suppress-large-file-prompts-a (orig-fn size op-type filename &optional offer-raw)
     :around #'abort-if-file-too-large
     (unless (string-match-p "\\.pdf\\'" filename)
-      (if offer-raw
+      (funcall orig-fn size op-type filename offer-raw))))
-          (funcall orig-fn size op-type filename offer-raw)
-        (funcall orig-fn size op-type filename)))))
 
 
 (use-package! saveplace-pdf-view

modules/ui/fill-column/README.org

@@ -1,92 +0,0 @@
-#+TITLE:   ui/fill-column
-#+DATE:    August 23, 2020
-#+SINCE:   2.0.9
-#+STARTUP: inlineimages nofold
-
-* Table of Contents :TOC_3:noexport:
-- [[#description][Description]]
-  - [[#maintainers][Maintainers]]
-  - [[#module-flags][Module Flags]]
-  - [[#plugins][Plugins]]
-- [[#prerequisites][Prerequisites]]
-- [[#features][Features]]
-- [[#configuration][Configuration]]
-  - [[#setting-fill-column-globally][Setting fill-column globally]]
-  - [[#setting-fill-column-for-the-current-buffer-or-mode][Setting fill-column for the current buffer or mode]]
-  - [[#hl-fill-column-only-configuring-the-look-of-the-indicator][(hl-fill-column only) Configuring the look of the indicator]]
-- [[#troubleshooting][Troubleshooting]]
-
-* Description
-This module provides a fill column indicator to make it obvious when a line
-reaches or surpasses the 80th column. This serves as a reminder to keep lines
-short for accessibility and/or convenience. [[https://www.emacswiki.org/emacs/EightyColumnRule][Read more about this on the Emacs
-Wiki page]].
-
-#+begin_quote
-This module is deprecated and will be removed once Doom drops Emacs 26.x
-support. This is because the built-in ~display-fill-column-indicator-mode~ (in
-27 and newer) replaces it, and enabling it is a trivial one-liner, which doesn't
-warrant a module: ~(global-display-fill-column-indicator-mode +1)~
-#+end_quote
-
-** Maintainers
-This module has no dedicated maintainers.
-
-** Module Flags
-This module provides no flags.
-
-** Plugins
-+ [[https://github.com/laishulu/hl-fill-column][hl-fill-column]]* (unless Emacs >=27)
-
-* Prerequisites
-This module has no prerequisites.
-
-* Features
-The behavior of this module varies slightly depending on your version of Emacs:
-
-+ In Emacs 26.x, text beyond ~fill-column~ will be highlighted.
-+ In Emacs 27 and newer, a line is drawn down the right side at column 80.
-
-* Configuration
-** Setting fill-column globally
-This column limit is controlled by the ~fill-column~ variable (default: ~80~).
-
-This variable is buffer-local, therefore, to change this globally, you must use
-~setq-default~:
-
-#+BEGIN_SRC emacs-lisp
-(setq-default fill-column 100)
-#+END_SRC
-
-~hl-fill-column-mode~ (or ~display-fill-column-indicator-mode~ on Emacs 27+)
-must be restarted to see the change.
-
-** Setting fill-column for the current buffer or mode
-The ~setq-hook!~ convenience macro makes settings ~fill-column~ for a particular
-mode (or modes) easy:
-
-#+BEGIN_SRC emacs-lisp
-(setq-hook! 'org-mode-hook fill-column 100)
-(setq-hook! 'python-mode-hook fill-column 72)
-(setq-hook! js2-mode fill-column 72)
-(setq-hook! '(ruby-mode rustic-mode python-mode-hook) fill-column 80)
-#+END_SRC
-
-Any open buffers in these modes must be restarted to see the change.
-
-** (hl-fill-column only) Configuring the look of the indicator
-To change the appears of hl-fill-column's highlight, change the
-~hl-fill-column-face~ face. Doom provides the ~custom-set-faces!~ macro to help
-you do this:
-
-#+BEGIN_SRC emacs-lisp
-(custom-set-faces!
-  '(hl-fill-column-face :background "red"
-                        :foreground "blue"
-                        :inverse-video t))
-#+END_SRC
-
-See =M-x helpful-function RET custom-set-faces\!= for demos and documentation
-for this macro.
-
-* TODO Troubleshooting

modules/ui/fill-column/autoload.el

@@ -1,15 +0,0 @@
-;;; ui/fill-column/autoload.el -*- lexical-binding: t; -*-
-
-;;;###autoload
-(defalias '+fill-column/toggle
-  (if (fboundp 'display-fill-column-indicator-mode)
-      #'display-fill-column-indicator-mode  ; Emacs 27 only
-    (autoload 'hl-fill-column-mode "hl-fill-column" nil t)
-    #'hl-fill-column-mode))
-
-;;;###autoload
-(defalias '+fill-column-enable-h #'+fill-column/toggle)
-
-;;;###autoload
-(add-hook! '(text-mode-hook prog-mode-hook conf-mode-hook)
-           #'+fill-column-enable-h)

modules/ui/fill-column/packages.el

@@ -1,6 +0,0 @@
-;; -*- no-byte-compile: t; -*-
-;;; ui/fill-column/packages.el
-
-;; `hl-fill-column' is only used on Emacs versions before 27
-(unless (fboundp 'display-fill-column-indicator-mode)
-  (package! hl-fill-column :pin "5782a91ba0182c4e562fa0db6379ff9dd472856b"))