mail(1) editline defaults to vi mode?

[Valery Ushakov <uwe%stderr.spb.ru@localhost>]

I had to use mail(1) recently (after ~30 years break :).  To my
surp^Wconfusion its editline inits itself to vi mode.  I think no
program should ever init editline to vi mode, unless specifically
instructed too. :)

PS: I had EDITOR=emacsclient on that system.  But even EDITOR=vi is
not an excuse to init editline to vi mode, IMHO.

-uwe