bug#13276: 24.2.50; apropos-variable

[Drew Adams]

> Maybe `apropos-variable' should be renamed `apropos-options'
> to make it clear it lists "user variables" and not "normal
> variables."

FWIW -

I proposed that long ago.  It has been discussed at least once, at least as far
back as 2005.  This is what I use:
http://www.emacswiki.org/emacs/download/apropos-fn%2bvar.el

> (this assumes the convention of options = user variables is common enough.)

It's not just a convention.  It's the Emacs definition of option.