update emacs config to 21th century

conf-lisp/textscale.el

@@ -0,0 +1,21 @@
+;;; ** increase fontsize with ctrl-+ and ctrl--
+
+;; I use  those bindings everywhere  (firefox, terminal, etc),  and in
+;; emacs as well.
+;; using https://github.com/purcell/default-text-scale
+(use-package default-text-scale
+             :config
+             (defun tvd-global-font-size-bigger ()
+               "Make font size larger."
+               (interactive)
+               ;; (text-scale-increase 0.5)
+               (default-text-scale-increase))
+
+             (defun tvd-global-font-size-smaller ()
+               "Change font size back to original."
+               (interactive)
+               ;; (text-scale-increase -0.5)
+               (default-text-scale-decrease))
+
+             (global-set-key (kbd "C-+") 'tvd-global-font-size-bigger)
+             (global-set-key (kbd "C--") 'tvd-global-font-size-smaller))