Runtime of a buffer in emacs
emacs, emacs24
Solution
Yep. But only because I wrote something for ya to do just that. Ok, I wrote it for myself, but have been using it for the past 3-4 years and can't live without it now.
https://github.com/hardaker/elisp-buffer-timer/
Problem
Is there a way to find out how long a buffer has been active in Emacs? `M-x list-buffers` lists them, but there is no way of deducing how long the buffer has existed for.