bug#13276: 24.2.50; apropos-variable

[Drew Adams]

> > It renames `apropos-variable' to `apropos-option' and define a new
> 
> I think it should be "apropos-user-option", but other than 
> that, I'm OK with your change.

Too bad.  That just confuses users more.  The only options in Emacs are user
options.  The name you've chosen hints that there are also non-user options.

We used the qualifier "user" for "user variable" because there are also non-user
variables.  There, it made sense.  We don't speak of "user faces".

It can sometimes be OK to talk about "user options" or even "customizable
options" in text passages, even though this is redundant (and could confuse for
the reason mentioned above), if we want to emphasize that these are thingies
that users can customize.  If the text makes things clear, that's OK.

But to use this term in the name of the command is a bad idea, IMHO.  It should
have been left as was originally suggested: `apropos-option'.  In Emacs, an
option _is_ a user variable.