Re: DOC for Mac OS shown for Emacs compiled for X.

[Jan D.]

> My take on this is that if the documentation is very different for each
> system, then either the function's functionality is ill-defined or the
> docstring gives too much precision.

This is probably correct.  But most functions have been defined on X 
for Unix and then kind of adopted for the other platforms, sometimes 
with a bad fit.

> > And if the real function is in another file the benefit of clicking 
> > on "C
> > source code" is reduced.
>
> Good point.  Richard's suggestion to tweak the link-following code
> so as to look for macfoo.c (or w32foo.c) is a better idea.

There is also one defun (x-selection-exists-p) that is in mac.c instead 
of xselect.c (there is no macselect.c) that will be wrong.  I already 
have a modified help-fns.el (6 lines added) that can handle this my 
way, but I guess it is not important.

        Jan D.