Xah Talk Show 2019-12-08, emacs lisp coding command for global bigger font, chat with Bart

topics talked:

• emacs lisp , write a command to increase font, for all frames/buffers
• try out online guest in Xah Talk Show. Chat with Bart.

Thanks to Alan for the pear image.

(defun xah-bigger-font-global ()
  "Make font size larger globally.
currently only works for mac. because, the right size for a “bigger” font depends on your monitor resolution and also font used, and in turn, also what font is available on which OS.
Version 2019-12-08"
  (interactive)
  (cond
   ((string-equal system-type "gnu/linux")
    (when (member "DejaVu Sans Mono" (font-family-list))
      (set-frame-font "DejaVu Sans Mono" t t)))
   ((string-equal system-type "darwin")
    (when (member "Menlo" (font-family-list))
      (set-frame-font "Menlo-15" t t)))
   ((string-equal system-type "windows-nt")
    (when (member "Courier" (font-family-list))
      (set-frame-font "Courier" t t)))))

xah_talk_show_2019-12-08.txt