I am using Emacs 24.5.1 on OpenSUSE Tumbleweed, with Gnome 3.16, and the title of the GTK window with Emacs in it is always emacs@hostname. How can I change it to the name of the current file I'm editing?

  • Why do you need this? I'm curious for your use case. The file name is already shown in the mode line, isn't it? – Dieter.Wilhelm Sep 22 '15 at 21:25
  • Gnome in Overview mode has the window title in big text below the window thumbnail, the one in the mode line is too small to see. – Sean Sep 23 '15 at 13:32

The file name as window name

(setq-default frame-title-format '("%f"))

The file name and the major mode as window name (my conf)

(setq-default frame-title-format '("%f [%m]"))
  • 4
    Use %b to get the filename without the path – Adversus Jun 12 '17 at 7:24
  • 1
    '%b' is also better for unsaved buffers, like "scratch" – teroi May 16 '18 at 8:29

Make emacs' window title show path of current file:

(setq-default frame-title-format
                (format "%s@%s: %s %s"
                        (or (file-remote-p default-directory 'user)
                        (or (file-remote-p default-directory 'host)
                          (concat "(" buffer-file-truename ")"))
                          (concat "{" dired-directory "}"))
                          "[no file]")))))

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