switch-buffer-functions

Hook run when switching current buffer

What is This?

This is a Emacs Lisp package that provides a hook variable switch-buffer-functions.

This hook will be run when the current buffer has been changed after each interactive command, i.e. when post-command-hook is called.

When functions are added to the hook, they will be called with the previous buffer and the current buffer. For example, if you eval:

(add-hook 'switch-buffer-functions
          (lambda (prev curr)
            (cl-assert (eq curr (current-buffer)))  ;; Always t
            (message "%S -> %S" prev curr)))

then the message like "#<buffer *Messages*> → #<buffer init.el<.emacs.d>>" will be displayed to the echo area each time when you switch the current buffer.

License

This software is Unlicensed. See LICENSE for details.