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init.el
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init.el
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;;; init.el --- Emacs Config for Root User
;; Copyright (C) 2019 Yuri MX
;; Author: Yuri MX <https://github.com/yurimx>
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; This is an Emacs configuration for root user
;;; Code:
(setq gc-cons-threshold 33554432)
(add-hook 'emacs-startup-hook (lambda () (setq gc-cons-threshold 800000)))
(require 'cl-lib)
;;; ELPA
(require 'package)
;; Standard elpa repositories
(add-to-list 'package-archives '("melpa" . "https://elpa.emacs-china.org/melpa/"))
;; On-demand installation of packages
(defun require-package (package)
"Install PACKAGE if it's not installed."
(or (package-installed-p package)
(if (assoc package package-archive-contents)
(package-install package)
(progn
(package-refresh-contents)
(package-install package)))))
(setq package-enable-at-startup nil)
(package-initialize)
(require-package 'wgrep)
(require-package 'diminish)
;;; Core
;; Coding system
(defun yuri/utf8-locale-p (v)
"Return whether locale string V relates to a UTF-8 locale."
(and v (string-match "UTF-8" v)))
(defun yuri/locale-is-utf8-p ()
"Return t iff the \"locale\" command or environment variables prefer UTF-8."
(or (yuri/utf8-locale-p (and (executable-find "locale") (shell-command-to-string "locale")))
(yuri/utf8-locale-p (getenv "LC_ALL"))
(yuri/utf8-locale-p (getenv "LC_CTYPE"))
(yuri/utf8-locale-p (getenv "LANG"))))
(when (yuri/locale-is-utf8-p)
(prefer-coding-system 'utf-8)
(set-default-coding-systems 'utf-8)
(set-terminal-coding-system 'utf-8)
(set-selection-coding-system (if (eq system-type 'windows-nt) 'utf-16-le 'utf-8))
(setq locale-coding-system 'utf-8))
;; Some basic preferences
(setq-default
bookmark-default-file (expand-file-name ".bookmarks" user-emacs-directory)
column-number-mode t
ediff-split-window-function 'split-window-horizontally
ediff-window-setup-function 'ediff-setup-windows-plain
indent-tabs-mode nil
make-backup-files nil
save-interprogram-paste-before-kill t
scroll-preserve-screen-position t)
;; When Emacs asks "yes" or "no", use "y" or "n" instead
(fset 'yes-or-no-p 'y-or-n-p)
;; Revert buffers for changed files
(add-hook 'after-init-hook 'global-auto-revert-mode)
(setq global-auto-revert-non-file-buffers t
auto-revert-verbose nil)
;; Make Dired try to guess the default target directory
(setq dired-dwim-target t)
;; Support for jumping to the beginning of search ring when exiting isearch
(defun yuri/isearch-exit-other-end ()
"Exit isearch, but at the other end of the search string.
This is useful when followed by an immediate kill."
(interactive)
(isearch-exit)
(goto-char isearch-other-end))
(define-key isearch-mode-map [(control return)] 'yuri/isearch-exit-other-end)
;; Activate occur easily inside isearch
(define-key isearch-mode-map (kbd "C-c C-o") 'isearch-occur) ; to match ivy conventions
;; DEL during isearch should edit the search string, not jump back to the previous result
(define-key isearch-mode-map [remap isearch-delete-char] 'isearch-del-char)
;; Setup a menu of recently opened files
(add-hook 'after-init-hook 'recentf-mode)
(setq recentf-max-saved-items 1000
recentf-exclude '("/tmp/" "/ssh:"))
;; Save minibuffer history
(setq history-length 1000)
(add-hook 'after-init-hook 'savehist-mode)
;; Automatically save place in files
(add-hook 'after-init-hook 'save-place-mode)
;; Show matching parens
(add-hook 'after-init-hook 'show-paren-mode)
(require-package 'disable-mouse)
;; Nicer naming of buffers for files with identical names
(require 'uniquify)
(setq uniquify-ignore-buffers-re "^\\*")
(require-package 'mode-line-bell)
(add-hook 'after-init-hook 'mode-line-bell-mode)
;; Display ugly ^L page breaks as tidy horizontal lines
(require-package 'page-break-lines)
(add-hook 'after-init-hook 'global-page-break-lines-mode)
(with-eval-after-load 'page-break-lines
(diminish 'page-break-lines-mode))
;; Highlight trailing whitespace
(defun yuri/show-trailing-whitespace ()
"Highlight trailing whitespace."
(setq show-trailing-whitespace t))
(dolist (hook '(prog-mode-hook text-mode-hook))
(add-hook hook 'yuri/show-trailing-whitespace))
;;; UI
(setq inhibit-startup-screen t)
;; Window features
(when (fboundp 'menu-bar-mode) (menu-bar-mode -1))
(when (fboundp 'set-scroll-bar-mode) (set-scroll-bar-mode nil))
(when (fboundp 'tool-bar-mode) (tool-bar-mode -1))
;; Theme
(setq custom-enabled-themes '(wombat))
;; Ensure that themes will be loaded even if they have not been customized
(defun yuri/load-themes ()
"Load and enable the themes listed in `custom-enabled-themes'."
(dolist (theme custom-enabled-themes)
(unless (custom-theme-p theme)
(load-theme theme)))
(custom-set-variables `(custom-enabled-themes (quote ,custom-enabled-themes))))
(add-hook 'after-init-hook 'yuri/load-themes)
;;; Editing
(when (fboundp 'electric-pair-mode)
(add-hook 'after-init-hook 'electric-pair-mode))
(when (fboundp 'global-prettify-symbols-mode)
(add-hook 'after-init-hook 'global-prettify-symbols-mode))
(add-hook 'after-init-hook 'transient-mark-mode)
(require-package 'anzu)
(add-hook 'after-init-hook 'global-anzu-mode)
(setq anzu-mode-lighter "")
(global-set-key [remap query-replace-regexp] 'anzu-query-replace-regexp)
(global-set-key [remap query-replace] 'anzu-query-replace)
(require-package 'avy)
(global-set-key (kbd "C-;") 'avy-goto-char-timer)
(require-package 'expand-region)
(global-set-key (kbd "C-=") 'er/expand-region)
(require-package 'highlight-escape-sequences)
(add-hook 'after-init-hook 'hes-mode)
(require-package 'rainbow-delimiters)
(add-hook 'prog-mode-hook 'rainbow-delimiters-mode)
(require-package 'symbol-overlay)
(dolist (hook '(prog-mode-hook html-mode-hook css-mode-hook))
(add-hook hook 'symbol-overlay-mode))
(with-eval-after-load 'symbol-overlay
(diminish 'symbol-overlay-mode)
(define-key symbol-overlay-mode-map (kbd "M-n") 'symbol-overlay-jump-next)
(define-key symbol-overlay-mode-map (kbd "M-p") 'symbol-overlay-jump-prev))
(require-package 'whitespace-cleanup-mode)
(add-hook 'after-init-hook 'global-whitespace-cleanup-mode)
(global-set-key [remap just-one-space] 'cycle-spacing)
(global-set-key (kbd "RET") 'newline-and-indent)
;;; Completion
(setq tab-always-indent 'complete)
(global-set-key (kbd "M-/") 'hippie-expand)
(setq hippie-expand-try-functions-list
'(try-complete-file-name-partially
try-complete-file-name
try-expand-dabbrev
try-expand-dabbrev-all-buffers
try-expand-dabbrev-from-kill))
(require-package 'company)
(add-hook 'after-init-hook 'global-company-mode)
;; Ivy
(require-package 'ivy)
(add-hook 'after-init-hook 'ivy-mode)
(with-eval-after-load 'ivy
(diminish 'ivy-mode))
(setq ivy-use-virtual-buffers t
ivy-virtual-abbreviate 'full
ivy-initial-inputs-alist
'((Man-completion-table . "^")
(woman . "^")))
;; Counsel
(require-package 'counsel)
(add-hook 'after-init-hook 'counsel-mode)
(with-eval-after-load 'counsel
(diminish 'counsel-mode))
(setq counsel-mode-override-describe-bindings t)
(cond
((executable-find "rg")
(global-set-key (kbd "C-c g") 'counsel-rg))
((executable-find "ag")
(global-set-key (kbd "C-c g") 'counsel-ag)))
;; Swiper
(require-package 'swiper)
(with-eval-after-load 'ivy
(define-key ivy-mode-map (kbd "M-s s") 'swiper))
;;; Utils
(defun yuri/sort-lines-random (beg end)
"Sort lines in region from BEG to END randomly."
(interactive "r")
(save-excursion
(save-restriction
(narrow-to-region beg end)
(goto-char (point-min))
(let ;; To make `end-of-line' and etc. to ignore fields.
((inhibit-field-text-motion t))
(sort-subr nil 'forward-line 'end-of-line nil nil
(lambda (s1 s2) (eq (random 2) 0)))))))
(defun yuri/delete-current-file ()
"Delete the current file, and kill the buffer."
(interactive)
(unless (buffer-file-name)
(error "No file is currently being edited"))
(when (yes-or-no-p (format "Really delete '%s'?"
(file-name-nondirectory buffer-file-name)))
(delete-file (buffer-file-name))
(kill-this-buffer)))
(defun yuri/rename-current-file-and-buffer (new-name)
"Rename the current file and associated buffer to NEW-NAME."
(interactive "sNew name: ")
(let ((name (buffer-name))
(filename (buffer-file-name)))
(unless filename
(error "Buffer '%s' is not visiting a file!" name))
(progn
(when (file-exists-p filename)
(rename-file filename new-name 1))
(set-visited-file-name new-name)
(rename-buffer new-name))))
(defun yuri/browse-current-file ()
"Open the current file as a URL using `browse-url'."
(interactive)
(let ((file-name (buffer-file-name)))
(if (and (fboundp 'tramp-tramp-file-p)
(tramp-tramp-file-p file-name))
(error "Cannot open tramp file")
(browse-url (concat "file://" file-name)))))
;;; Syntax checking
(require-package 'flycheck)
(add-hook 'after-init-hook #'global-flycheck-mode)
(setq flycheck-display-errors-function #'flycheck-display-error-messages-unless-error-list)
;;; Misc
(add-hook 'after-init-hook 'xterm-mouse-mode)
(add-hook 'prog-mode-hook 'goto-address-prog-mode)
(setq goto-address-mail-face 'link)
(add-to-list 'auto-mode-alist '("\\LICENSE\\'" . text-mode))
(add-to-list 'auto-mode-alist '("^Portfile\\'" . tcl-mode))
(add-to-list 'auto-mode-alist '("^Procfile\\'" . conf-mode))
(add-to-list 'auto-mode-alist '("hostname" . conf-space-mode))
(add-to-list 'auto-mode-alist '("hosts" . conf-mode))
(require-package 'lua-mode)
(require-package 'dotenv-mode)
;;; Variables configured via the interactive 'customize' interface
(setq custom-file (expand-file-name ".emacs-custom.el" user-emacs-directory))
(when (file-exists-p custom-file) (load custom-file))
(provide 'init)
;;; init.el ends here
;; Local Variables:
;; coding: utf-8
;; no-byte-compile: t
;; End: