bug#67444: [PATCH] FAQ: Improve explanation of showing file name in titlebar

[Santiago Payà i Miralta]

* doc/misc/efaq.texi (Displaying the current file name in the
titlebar): Add example code to show the real file name in the
titlebar, not just the buffer name, with the additional dired buffer
case, and the last default buffer name.
---
 doc/misc/efaq.texi | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/doc/misc/efaq.texi b/doc/misc/efaq.texi
index 70f434d4b99..92622bd0527 100644
--- a/doc/misc/efaq.texi
+++ b/doc/misc/efaq.texi
@@ -1960,6 +1960,17 @@ Displaying the current file name in the titlebar
 (setq frame-title-format "%b")
 @end lisp
 
+To show the path to the file when the buffer is visiting some file, or
+the directory path when in a dired buffer, or just the name of the
+buffer:
+
+@lisp
+(setq frame-title-format
+      '(buffer-file-name (:eval (abbreviate-file-name buffer-file-name))
+                         (dired-directory dired-directory
+                                          "%b")))
+@end lisp
+
 @node Turning on abbrevs by default
 @section How do I turn on abbrevs by default just in mode @var{mymode}?
 @cindex Abbrevs, turning on by default
-- 
2.39.2