Doom Emacs configuration

config.el

;; I'm only uploading this because I had to rebuild it after I accidentally deleted it.
;; This isn't my whole config.el file, just the stuff after the defaults (hence "END OF DEFAULTS")
;; This isn't the most well-commented or anything, it's only public because I don't see any
;; reason for it not to be, if I'm going to be uploading it anyway. Also, why doesn't github support 5-space indents?
;; 5 spaces is obviously the best number of spaces for an indent, if you're going to use them instead of tabs.
;; And tabs are obviously superior to spaces for indentation.

;; ----------------------------------------------------------------------------
;; |                            END OF DEFAULTS                               |
;; ----------------------------------------------------------------------------

;; TODO:
;;     -Figure out how to make treemacs open when the first file of a project is opened
;;     -Figure out how to make electric indent not suck. Apparently it's responsible 
;;      for removing trailing whitespace. While removing the whitespace at the end
;;      of a file is okay, removing it for individual lines is absolutely horrible
;;      Also, it just acts weird. Maybe disable most of its features, if possible?
;;      Or find another auto-indent solution
;;     -See about setting up a script that saves the current cursor position when
;;      scrolling, then reloads it when moving the cursor again, to emulate the
;;      behavior of most modern editors.
;;     -Figure out how to create menus in the menu bar. Maybe create a package or
;;      module or whatever that does it for all of Doom Emacs. It would be like a training
;;      wheels mode, and it could be called ITYTD, short for "I'm Too Young To Die", Doom's easy mode
;;     -Find a better theme. Preferably one that's like Notepad++'s "Deep Black" since I remember really liking that.
;;     -See about a graphical way to fold and unfold code
;;     -Maybe create a key binding that just feels like Notepad++ or Atom, or other modern editors.
;;      Not that I mind most of Doom Emacs's bindings, but it's confusing switching between editors.

;; Automatic fullscreen
(custom-set-variables '(initial-frame-alist (quote ((fullscreen . maximized)))))

;; Re-enable GUI
(tool-bar-mode t)
(menu-bar-mode t)
(scroll-bar-mode t)

;; Make it so that enter doesn't autocomplete, and tab autocompletes
(with-eval-after-load 'company
  (define-key company-active-map (kbd "<return>") nil)
  (define-key company-active-map (kbd "RET") nil)
  (define-key company-active-map (kbd "<tab>") nil)
  (define-key company-active-map (kbd "TAB") 'company-complete-selection)
)

;; ----------------------------------------------------------------------------
;; Start of indentation configuration
;; ----------------------------------------------------------------------------
(setq custom-tab-width 5)
(defun disable-tabs ()
  (setq indent-tabs-mode nil)
)
(defun enable-tabs ()
  (local-set-key (kbd "TAB") 'tab-to-tab-stop)
  (setq indent-tabs-mode t)
  (setq tab-width custom-tab-width)
  (whitespace-mode t)
)

;; Enable tabs in programming mode
(add-hook 'prog-mode-hook 'enable-tabs)
;; TODO: Enable tabs for text modes, but not TeX modes because apparently that fucks shit up. Probably fucks shit in some other markup modes too.

;; Disable tabs in certain languages' modes
(add-hook 'lisp-mode-hook 'disable-tabs)
(add-hook 'emacs-lisp-mode-hook 'disable-tabs)

;; Language-Specific Tweaks
;; Apparently python has a standard indentation amount.
;;(setq-default python-indent-offset custom-tab-width) ;; Python
;; I don't know what the deal with JavaScript is... Wouldn't most JS devs want to use VS Code or Atom, anyways?
;;(setq-default js-indent-level custom-tab-width)      ;; Javascript

;; Makes electric indent operate in an apparently sane manner. I only think it's slightly better than default.
(setq-default electric-indent-inhibit t)

;; Shift width for evil-mode users
;; For the vim-like motions of ">>" and "<<".
;; (I don't know what this actually does, but I use evil mode, so I better enable this)
(setq-default evil-shift-width custom-tab-width)

;; Visualize tabs as a pipe character - "|"
;; put "trailing" after "tab-mark" to make trailing whitespace red.
(setq whitespace-style '(face tabs tab-mark))
(custom-set-faces
  '(whitespace-tab ((t (:foreground "#636363"))))
)
(setq whitespace-display-mappings
  '((tab-mark 9 [124 9] [92 9])) ; 124 is the ascii ID for '\|'
)
;; ----------------------------------------------------------------------------
;; End of indentation configuration
;; ----------------------------------------------------------------------------