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.
This commit is contained in:
Henrik Lissner
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19 changed files with 58 additions and 326 deletions
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#+TITLE: ui/fill-column
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#+DATE: August 23, 2020
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#+SINCE: 2.0.9
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#+STARTUP: inlineimages nofold
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* Table of Contents :TOC_3:noexport:
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- [[#description][Description]]
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- [[#maintainers][Maintainers]]
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- [[#module-flags][Module Flags]]
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- [[#plugins][Plugins]]
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- [[#prerequisites][Prerequisites]]
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- [[#features][Features]]
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- [[#configuration][Configuration]]
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- [[#setting-fill-column-globally][Setting fill-column globally]]
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- [[#setting-fill-column-for-the-current-buffer-or-mode][Setting fill-column for the current buffer or mode]]
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- [[#hl-fill-column-only-configuring-the-look-of-the-indicator][(hl-fill-column only) Configuring the look of the indicator]]
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- [[#troubleshooting][Troubleshooting]]
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* Description
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This module provides a fill column indicator to make it obvious when a line
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reaches or surpasses the 80th column. This serves as a reminder to keep lines
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short for accessibility and/or convenience. [[https://www.emacswiki.org/emacs/EightyColumnRule][Read more about this on the Emacs
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Wiki page]].
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#+begin_quote
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This module is deprecated and will be removed once Doom drops Emacs 26.x
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support. This is because the built-in ~display-fill-column-indicator-mode~ (in
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27 and newer) replaces it, and enabling it is a trivial one-liner, which doesn't
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warrant a module: ~(global-display-fill-column-indicator-mode +1)~
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#+end_quote
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** Maintainers
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This module has no dedicated maintainers.
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** Module Flags
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This module provides no flags.
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** Plugins
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+ [[https://github.com/laishulu/hl-fill-column][hl-fill-column]]* (unless Emacs >=27)
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* Prerequisites
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This module has no prerequisites.
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* Features
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The behavior of this module varies slightly depending on your version of Emacs:
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+ In Emacs 26.x, text beyond ~fill-column~ will be highlighted.
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+ In Emacs 27 and newer, a line is drawn down the right side at column 80.
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* Configuration
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** Setting fill-column globally
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This column limit is controlled by the ~fill-column~ variable (default: ~80~).
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This variable is buffer-local, therefore, to change this globally, you must use
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~setq-default~:
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#+BEGIN_SRC emacs-lisp
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(setq-default fill-column 100)
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#+END_SRC
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~hl-fill-column-mode~ (or ~display-fill-column-indicator-mode~ on Emacs 27+)
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must be restarted to see the change.
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** Setting fill-column for the current buffer or mode
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The ~setq-hook!~ convenience macro makes settings ~fill-column~ for a particular
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mode (or modes) easy:
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#+BEGIN_SRC emacs-lisp
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(setq-hook! 'org-mode-hook fill-column 100)
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(setq-hook! 'python-mode-hook fill-column 72)
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(setq-hook! js2-mode fill-column 72)
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(setq-hook! '(ruby-mode rustic-mode python-mode-hook) fill-column 80)
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#+END_SRC
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Any open buffers in these modes must be restarted to see the change.
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** (hl-fill-column only) Configuring the look of the indicator
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To change the appears of hl-fill-column's highlight, change the
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~hl-fill-column-face~ face. Doom provides the ~custom-set-faces!~ macro to help
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you do this:
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#+BEGIN_SRC emacs-lisp
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(custom-set-faces!
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'(hl-fill-column-face :background "red"
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:foreground "blue"
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:inverse-video t))
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#+END_SRC
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See =M-x helpful-function RET custom-set-faces\!= for demos and documentation
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for this macro.
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* TODO Troubleshooting
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@ -1,15 +0,0 @@
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;;; ui/fill-column/autoload.el -*- lexical-binding: t; -*-
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;;;###autoload
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(defalias '+fill-column/toggle
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(if (fboundp 'display-fill-column-indicator-mode)
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#'display-fill-column-indicator-mode ; Emacs 27 only
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(autoload 'hl-fill-column-mode "hl-fill-column" nil t)
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#'hl-fill-column-mode))
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;;;###autoload
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(defalias '+fill-column-enable-h #'+fill-column/toggle)
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;;;###autoload
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(add-hook! '(text-mode-hook prog-mode-hook conf-mode-hook)
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#'+fill-column-enable-h)
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@ -1,6 +0,0 @@
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;; -*- no-byte-compile: t; -*-
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;;; ui/fill-column/packages.el
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;; `hl-fill-column' is only used on Emacs versions before 27
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(unless (fboundp 'display-fill-column-indicator-mode)
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(package! hl-fill-column :pin "5782a91ba0182c4e562fa0db6379ff9dd472856b"))
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