How to programmatically create/update a TAGS file with emacs?

Question

Is there any plugin for emacs to automatically update the TAGS file in my C project (for example on buffer save or access) or create a new one if there is no TAGS file present?

Answer 1

Try out my `ctags.el'[1] module.

Configuration example:

(setq tags-revert-without-query t)
(global-set-key (kbd "") 'ctags-create-or-update-tags-table)

Then just press to update or create your TAGS file. That function look for a file TAGS in the current and its parent directories, if a TAG file is not found it ask you where create a new one.

It is a new library and probably has bugs, etc, so any help is welcome.

[1] https://bitbucket.org/semente/ctags.el/