bug#6997: Loading w32-fns under X11 signals an error

[Eli Zaretskii <eliz@gnu.org>]

> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Cc: 6997@debbugs.gnu.org
> Date: Mon, 13 Sep 2010 11:27:30 +0200
> 
> They can define new functions and variables, as well as load other
> files, and even set a few things up but only to *add* behavior, not to
> *change* behavior.

Not sure how instrumental that definition is.  Doesn't addition
constitute a change?

Let's take a practical example: w32-convert-standard-filename.  Do you
want it to become effective or not?

If your answer is NO, then what about someone (not called Stefan) who
wants to test some issue for which w32-convert-standard-filename must
be in effect?

> > IOW, can you come up with a general enough definition of the reason(s)
> > for loading w32-fns on non-w32 systems?
> 
> The same reason why I might want to load diff-mode.el without ever
> wanting to use that mode.
> 
> E.g. to complete function/variable names, or to browse customize data, ...

That's rather a narrow need.  Sounds like lots of labor to gain very
little (why does it matter to have symbols that begin with a `w32-'?).