Use tabs instead of spaces; install smart-tabs-mode

1 files changed, 38 insertions, 1 deletions

@@ -527,8 +527,45 @@ I was using company, but I think it might've been causing issues with ~awk-mode~
 #+END_SRC
 ** Tabs & Spaces
 #+BEGIN_SRC emacs-lisp
-  (cuss indent-tabs-mode nil)
   (cuss sentence-end-double-space t)
+
+  ;; cf https://dougie.io/emacs/indentation/
+  ;; Create a variable for our preferred tab width
+  (setq custom-tab-width 4)
+
+  ;; Two callable functions for enabling/disabling tabs in Emacs
+  (defun disable-tabs () (setq indent-tabs-mode nil))
+  (defun enable-tabs  ()
+    (setq indent-tabs-mode t)
+    (setq tab-width custom-tab-width))
+
+  ;; Hooks to Enable Tabs
+  (add-hook 'prog-mode-hook 'enable-tabs)
+  ;; Hooks to Disable Tabs
+  (add-hook 'lisp-mode-hook 'disable-tabs)
+  (add-hook 'emacs-lisp-mode-hook 'disable-tabs)
+
+  ;; Language-Specific Tweaks
+  (setq-default python-indent-offset custom-tab-width) ;; Python
+  (setq-default js-indent-level custom-tab-width)      ;; Javascript
+
+  ;; Make the backspace properly erase the tab instead of
+  ;; removing 1 space at a time.
+  (setq backward-delete-char-untabify-method 'hungry)
+
+  ;; WARNING: This will change your life
+  ;; (OPTIONAL) Visualize tabs as a pipe character - "|"
+  ;; This will also show trailing characters as they are useful to spot.
+  (setq whitespace-style '(face tabs tab-mark trailing))
+  (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 '\|'
+  (global-whitespace-mode) ; Enable whitespace mode everywhere
+
+  (use-package smart-tabs-mode
+    :init
+    (smart-tabs-insinuate 'c 'javascript))
 #+END_SRC
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