Emacs: Show filename in frame title.

init/basics/appearance.el

@@ -1,6 +1,6 @@
 ;;; appearance.el --- Configure appearance. -*- lexical-binding: t; -*-
 
-;; Time-stamp: <2019-10-27T20:04:51+00:00>
+;; Time-stamp: <2019-11-09T12:20:03+00:00>
 
 ;;; Commentary:
 
@@ -19,6 +19,9 @@
                '(font . "Source Code Pro-10"))
   (global-hl-line-mode t)               ; Highlight current line.
   (show-paren-mode t)                   ; Visualize matching parens.
+  (setq frame-title-format              ; Show filename in frame title.
+        '(multiple-frames
+          "%b" ("" invocation-name "@" system-name " – " buffer-file-truename)))
   )
 
 ;; Icon font (required by doom and others).