ambevar-dotfiles/.emacs.d/main.el

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;; MAIN
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(require 'functions)

;; Remember last cursor position.
(require 'saveplace)
(setq save-place-file (concat emacs-cache-folder "saveplace"))
(setq-default save-place t)

;; Disable autosave features.
(setq auto-save-default nil)
(setq auto-save-list-file-prefix nil)

;; Place backup files in specific directory.
(setq backup-directory-alist
      `((".*" . ,(concat emacs-cache-folder "backups/"))))

;; Other backup options.
; (setq backup-inhibited t) ;; Disable backup files.
; (setq make-backup-files t) ;; Enable backup files.
; (setq version-control t) ;; Enable numbered versioning.

;; Default mode
(setq default-major-mode 'text-mode)

;; Disable suspend key since it is useless on Emacs server.
(global-unset-key (kbd "C-z"))
(global-unset-key (kbd "C-x C-z"))

;; For convenience.
(setq inhibit-startup-screen t)
(if (fboundp 'tool-bar-mode) (tool-bar-mode -1))
(menu-bar-mode -1)
(when (fboundp 'set-scroll-bar-mode)
  (set-scroll-bar-mode 'left)
  (scroll-bar-mode -1)
  (define-key my-keys-minor-mode-map (kbd "C-<f6>") 'toggle-scroll-bar))

;; Make questions less annoying.
(defalias 'yes-or-no-p 'y-or-n-p)

;; Allow some protected functions.
(put 'upcase-region 'disabled nil)
(put 'downcase-region 'disabled nil)

;; Print column number in mode line.
(column-number-mode 1)

;; Print buffer size in mode line.
(size-indication-mode 1)

;; Kill whole line including \n.
(setq kill-whole-line t)

;; Alternative scrolling
(define-key my-keys-minor-mode-map [next]
  (lambda () (interactive)
    (if (string= major-mode "doc-view-mode")
        (doc-view-next-page)
      (condition-case nil (scroll-up)
        (end-of-buffer (goto-char (point-max)))))))

(define-key my-keys-minor-mode-map [prior]
  (lambda () (interactive)
    (if (string= major-mode "doc-view-mode")
        (doc-view-previous-page)
      (condition-case nil (scroll-down)
        (beginning-of-buffer (goto-char (point-min)))))))

;; Line numbers
;; TODO: This mode is slow on big files when using beginning-of-buffer binding.
(add-hook 'find-file-hook (lambda () (linum-mode 1)))
(define-key my-keys-minor-mode-map (kbd "C-<f5>") 'linum-mode)
(add-hook
 'linum-before-numbering-hook
 (lambda () (if (display-graphic-p) (setq linum-format "%d") (setq linum-format "%d "))))

;; Indentation
(setq-default tab-width 4)
(setq-default standard-indent 4)
(setq-default c-basic-offset 4)
(setq-default indent-tabs-mode nil) ;; Indentation cannot insert tabs

;; Line by line scrolling
(setq scroll-step 1)

;; Highlight selections -- not activated by default on old Emacs.
(transient-mark-mode 1)

;; Whitespace, tabs, and other frivolities.  Highlight trailing whitespaces. For
;; programming languages only, so that it does not affect buffer like calendar
;; and so on. There is no prog-mode-hook on Emacs<24.
(mapcar
 (lambda (mode-hook)
   (add-hook
    mode-hook
    (lambda ()
      ;; (setq show-trailing-whitespace t)
      (whitespace-mode))))
 '(prog-mode-hook lua-mode-hook))
;; WARNING: this can break some configuration files needing whitespaces at the
;; end.
; (add-hook 'before-save-hook 'delete-trailing-whitespace)
(setq whitespace-style (quote (face trailing tab-mark)))
;; TODO: whitespace report-on-bogus does not seem to work properly.
; (setq whitespace-action '(report-on-bogus))

;; Remove whitespaces on region, or whole file.
(define-key my-keys-minor-mode-map (kbd "C-\\") 'delete-trailing-whitespace)

;; Abbreviation support
(setq-default abbrev-mode t)

;; Set Fill Column
(setq-default fill-column 80)
(add-hook 'text-mode-hook 'turn-on-auto-fill)

;; Set man pages to display on a 80 character wide window.
(setenv "MANWIDTH" "80")

;; Windmove mode: easy window switching with Shift+arrows.
(when (fboundp 'windmove-default-keybindings)
  (windmove-default-keybindings))

;; Make Emacs use environment browser, or w3m if BROWSER is not set.
(setq browse-url-generic-program
      (executable-find
       (let ((b (getenv "BROWSER")))
         (if b b "w3m" )))
      browse-url-browser-function 'browse-url-generic)
(define-key my-keys-minor-mode-map (kbd "C-M-u") 'browse-url)

;; Default ispell dictionnay
;; (setq ispell-dictionary "fr")
(define-key my-keys-minor-mode-map
  (kbd "C-<f7>")
  (lambda () (interactive) (ispell-change-dictionary "en")))
(define-key my-keys-minor-mode-map
  (kbd "C-<f8>")
  (lambda () (interactive) (ispell-change-dictionary "fr")))

;; Use color escape sequences. Only use if needed.
;; (add-hook 'shell-mode-hook 'ansi-color-for-comint-mode-on)

;; Long paragraphs. Useful for quick navigation with backward-paragraph and
;; forward-paragraph.
(setq paragraph-start "
")

;; Show matching parenthesis
(show-paren-mode 1)
;; By default, there’s a small delay before showing a matching parenthesis. Set
;; it to 0 to deactivate.
(setq show-paren-delay 0)

;; query-replace-regex fix on terminals.
(if (not (fboundp 'tool-bar-mode)) (define-key my-keys-minor-mode-map (kbd "C-M-y") 'query-replace-regexp))

;; Semantic options.
(semantic-mode 1)
(setq semanticdb-default-save-directory (concat emacs-cache-folder "semanticdb"))
(define-key my-keys-minor-mode-map (kbd "C-c , d") 'semantic-ia-show-summary)
(define-key my-keys-minor-mode-map (kbd "C-, d") 'semantic-ia-show-summary)
(define-key my-keys-minor-mode-map (kbd "C-, g") 'semantic-symref-symbol)
(define-key my-keys-minor-mode-map (kbd "C-, G") 'semantic-symref)
(define-key my-keys-minor-mode-map (kbd "C-, j") 'semantic-complete-jump-local)
(define-key my-keys-minor-mode-map (kbd "C-, J") 'semantic-complete-jump)
(define-key my-keys-minor-mode-map (kbd "C-, l") 'semantic-analyze-possible-completions)
;; Semantic with ghost display (allows M-n and M-p to browse completion).
;; (setq semantic-complete-inline-analyzer-displayor-class 'semantic-displayor-ghost)
;; (setq semantic-complete-inline-analyzer-displayor-class 'semantic-displayor-tooltip)
;; (setq semanticdb-find-default-throttle '(project unloaded system recursive))

;; Electric Pairs to auto-complete () [] {} "" etc. You can use it on regions.
(if (>= emacs-major-version 24)
    (electric-pair-mode 1))

;; Run ranger asynchronously.
(define-key my-keys-minor-mode-map (kbd "C-x D")
  (lambda () (interactive)
    (shell-command "urxvt -e ranger &")
    (delete-windows-on "*Async Shell Command*")))

;; Calendar ISO display.
(setq calendar-week-start-day 1)
(setq calendar-date-style 'iso)

;; IDO (Interactively Do Thing) for finding files and buffers. Incompatible with
;; FFAP.
(require 'ido)
(ido-mode t)
(setq ido-enable-flex-matching t)
(setq ido-save-directory-list-file (concat emacs-cache-folder "ido.last"))
;; All file finding operation defaults to what is at point. Incompatible with
;; IDO.
;; (ffap-bindings)

;; Quick buffer switching.
(define-key my-keys-minor-mode-map (kbd "C-<prior>") 'previous-buffer)
(define-key my-keys-minor-mode-map (kbd "C-<next>") 'next-buffer)

;; Do not open other window for buffer menu, plus hide non-file buffers.
(define-key my-keys-minor-mode-map (kbd "C-x C-b")
  (lambda () (interactive)
    (buffer-menu 1)))

;; Remove auto-fill in dwb edit because wikis and forums do not like it.
(add-hook
 'find-file-hook
 (lambda ()
   (if (string-match "edit*" (buffer-name))
       (auto-fill-mode -1))))

;; Speedbar options.
(add-hook
 'speedbar-mode-hook
 (lambda ()
   (speedbar-toggle-updates)))

;; Compilation bindings and conveniences.
(setq compilation-hide-window nil)
(define-key my-keys-minor-mode-map (kbd "<f10>")
  (lambda () (interactive)
    (save-buffer)
    (compile compile-command)
    (when compilation-hide-window
      (sit-for 2)
      (delete-windows-on "*compilation*"))))
(define-key my-keys-minor-mode-map (kbd "<f11>") 'previous-error)
(define-key my-keys-minor-mode-map (kbd "<f12>") 'next-error)
;; Code browsing: make C-M-e jump to next function instead of the end of the current function.
(define-key my-keys-minor-mode-map (kbd "C-M-e") (lambda () (interactive) (beginning-of-defun -1)))

;; Just because XML is ugly.
(add-hook
 'html-mode-hook
 (lambda ()
   (turn-off-auto-fill)
   (toggle-truncate-lines)))

;; Common LISP
(setq inferior-lisp-program "clisp")

;; ;; Flymake has a bug that prevents menu from spawning in a console. We redefine
;; ;; the function to spawn the error message in the mini-buffer.
;; (defun flymake-display-err-message-for-current-line ()
;;   "Display a message with errors/warnings for current line if it
;; has errors and/or warnings."
;;   (interactive)
;;   (let* ((line-no             (flymake-current-line-no))
;;          (line-err-info-list  (nth 0 (flymake-find-err-info flymake-err-info line-no)))
;;          (menu-data           (flymake-make-err-menu-data line-no line-err-info-list)))
;;     (if menu-data
;;         (let ((messages))
;;           (push (concat (car menu-data) ":") messages)
;;           (dolist (error-or-warning (cadr menu-data))
;;             (push (car error-or-warning) messages))
;;           (message "%s" (mapconcat #'identity (reverse messages) "\n"))))))
;;
;; (define-key my-keys-minor-mode-map (kbd "C-<f10>")
;;  'flymake-display-err-message-for-current-line)

;; Zlc - Zsh style completion.
;; (if (require 'zlc nil t)
;;     (let ((map minibuffer-local-map))
;;       ;; Like Zsh menu select.  Should not use arrows directly because it overrides
;;       ;; default controls like previous entry, or previous/next char.
;;       (define-key map (kbd "M-<down>")  'zlc-select-next-vertical)
;;       (define-key map (kbd "M-<up>")    'zlc-select-previous-vertical)
;;       (define-key map (kbd "M-<right>") 'zlc-select-next)
;;       (define-key map (kbd "M-<left>")  'zlc-select-previous)
;;       ;; Reset selection.
;;       (define-key map (kbd "C-c") 'zlc-reset)
;;       ;; (setq zlc-select-completion-immediately t)
;;       ;; To change style, M-x customize-face and input zlc-selected-completion-face.
;;       ))

;; xclip
(when (require 'xclip nil t)
    (turn-on-xclip))

;; Multiple-Cursors
(when (require 'multiple-cursors nil t)
  (setq mc/list-file (concat emacs-cache-folder "mc-lists.el"))
  (global-unset-key (kbd "C-<down-mouse-1>"))
  (define-key my-keys-minor-mode-map (kbd "C-<mouse-1>") 'mc/add-cursor-on-click)
  (define-key my-keys-minor-mode-map (kbd "C-c M-r") 'mc/edit-lines)
  (define-key my-keys-minor-mode-map (kbd "C-c C-m") 'mc/mark-more-like-this-extended)
  (define-key my-keys-minor-mode-map (kbd "C-c M-l") 'mc/mark-all-like-this-dwim))

;; Let Emacs auto-load/save sessions.
(when (boundp 'server-running-p)
  (desktop-save-mode 1)
  (setq history-length 250)
  (setq desktop-dirname (concat emacs-cache-folder "desktop"))
  (if (not (file-directory-p desktop-dirname))
      (make-directory desktop-dirname t))
  (setq desktop-path `(,desktop-dirname))
  (add-to-list 'desktop-globals-to-save 'compile-command))

(defadvice pop-to-buffer (before cancel-other-window first)
  (ad-set-arg 1 nil))

(ad-activate 'pop-to-buffer)

;; GMP
(eval-after-load "info-look"
  '(let ((mode-value (assoc 'c-mode (assoc 'symbol info-lookup-alist))))
     (setcar (nthcdr 3 mode-value)
             (cons '("(gmp)Function Index" nil "^ -.* " "\\>")
                   (nth 3 mode-value)))))

;; Do not expand abbrevs in skeletons. Not sure it is useful.
;; (setq skeleton-further-elements '((abbrev-mode nil)))
;; (setq skeleton-end-hook nil)
(defvar skeleton-markers nil
  "Markers for locations saved in skeleton-positions")
(add-hook 'skeleton-end-hook 'skeleton-make-markers)
(define-key my-keys-minor-mode-map (kbd "C->") 'skeleton-next-position)
(define-key my-keys-minor-mode-map (kbd "C-<") (lambda () (interactive) (skeleton-next-position t)))

;; Bookmark file to cache folder.
(setq bookmark-default-file (concat emacs-cache-folder "emacs.bmk"))

;; Disable prompt (but leave warning) on git symlink.
(setq vc-follow-symlinks t)

;; Git commit meessages.
(add-to-list 'auto-mode-alist '("COMMIT_EDITMSG\\'" . conf-mode))

;; GLSL fallback to C mode.
(add-to-list 'auto-mode-alist '("\\.vert\\'" . c-mode))
(add-to-list 'auto-mode-alist '("\\.frag\\'" . c-mode))
(add-to-list 'auto-mode-alist '("\\.glsl\\'" . c-mode))

;; Bison/flex -- Fallback to c-mode.
(add-to-list 'auto-mode-alist '("\\.yy?\\'" . c-mode))
(add-to-list 'auto-mode-alist '("\\.l\\'" . c-mode))

;; Mutt support.
(add-to-list 'auto-mode-alist '("/tmp/mutt.*" . mail-mode))

;; Arch Linux PKGBUILD.
(add-to-list 'auto-mode-alist '("PKGBUILD" . sh-mode))

;; Shell extensions. We do not put 'sh' only because it could get messy. Emacs
;; knows it anyway.
(add-to-list 'auto-mode-alist '("\\(bash\\'\\|zsh\\'\\|csh\\'\\|tcsh\\'\\|ksh\\'\\)" . sh-mode))
(add-to-list 'auto-mode-alist '("rc\\'" . sh-mode))

;; Subtitles support.
(add-to-list 'auto-mode-alist '("\\.srt\\'" . text-mode))

;; Read Matlab files in Octave mode.
(add-to-list 'auto-mode-alist '("\\.m\\'" . octave-mode))