Activate URLs and e-mail addresses in the current buffer.
You can make Emacs mark out URLs specially in the current buffer, by
typing M-x goto-address-mode. When this buffer-local minor mode
is enabled, it finds all the URLs in the buffer, highlights them, and
turns them into clickable buttons. You can follow the URL by typing
C-c RET (
goto-address-at-point) while point is on
its text; or by clicking with mouse-2, or by clicking
mouse-1 quickly (see Mouse References). Following a URL is
done by calling
browse-url as a subroutine
It can be useful to add
goto-address-mode to mode hooks and
hooks for displaying an incoming message
rmail-show-message-hook for Rmail). This is not needed
for Gnus or MH-E, which have similar features of their own.