change-log-goto-source
change-log-goto-source is an interactive compiled Lisp function in `add-log.el
'.
(change-log-goto-source)
Go to source location of "change log tag" near `point'.
A change log tag is a symbol within a parenthesized,
comma-separated list. If no suitable tag can be found nearby,
try to visit the file for the change under `point' instead.