Contrary to its name and all the documentation I have read,
append-next-kill sometimes causes the next kill to be prepended. Example
(in emacs -Q): Type "foo bar", then C-a M-d C- C-e C-M-w C-w C-y. The
yank produces " barfoo". This command would be much more useful if I
understood when the next kill appends and when it prepends.

Jorgen Harmse | Data Scientist
Civitas Learning, Inc.
jorgen.harmse@civitaslearning.com
main: 512.215.9628 | cell: 512.633.2226