Variable: tags-file-name
tags-file-name is a variable defined in etags.el.gz.
Value
nil
Documentation
File name of tags table.
To switch to a new tags table, do not set this variable; instead,
invoke visit-tags-table, which is the only reliable way of
setting the value of this variable, whether buffer-local or global.
Use the etags program to make a tags table file.
Source Code
;; Defined in /usr/src/emacs/lisp/progmodes/etags.el.gz
;;;###autoload
(defvar tags-file-name nil
"File name of tags table.
To switch to a new tags table, do not set this variable; instead,
invoke `visit-tags-table', which is the only reliable way of
setting the value of this variable, whether buffer-local or global.
Use the `etags' program to make a tags table file.")