I saw some discussion on this awhile ago and I don't understand why tmux
defaults to using a login shell. That wouldn't bother me too much except I
can't figure out how to tell it not to do that.
And I would like to be able to tell tmux not to do that in a way that uses
whatever shell I have set f
Using colors from the 256-color set is a bit annoying at times because
tmux only accepts the British spelling "colour123" where xterm uses
"color123" and Emacs (which has the very useful M-x list-colors-display)
uses "color-123".
To make customization less frustrating, accept all variants as input
