Re: %AppData% on Windows instead of %UserProfile% by default?

[Alexander Shukaev <haroogan@gmail.com>]

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>
> First, %AppData% is a subdirectory of %UserProfile%, so it's not like
> this is a totally different place.
>
> More importantly, we are following the platform guidelines, which
> say:
>
> CSIDL_PROFILE          Version 5.0. The user's profile folder.  A typical
> FOLDERID_Profile       path is C:\Users\username.
>                        Applications should not create files or folders
>                        at this level; they should put their data under
>                        the locations referred to by CSIDL_APPDATA or
>                        CSIDL_LOCAL_APPDATA.
>
> When Emacs on Windows starts up, if %HOME% is not defined in the
> environment already, Emacs defines it to refer to %AppData%.  See
> w32.c:init_environment for more details.
>
> I think we are, as much as practically possible.
>

True, but probably a decent fraction of users still tend to keep "emacs.d"
in %UserProfile% similarly to how they keep "emacs.d" in $HOME on Unix.
Yes, defining %HOME% is a possibility, but once again requires manual
intervention and reading a manual after being surprised with something like
"why the hell my configuration isn't loaded?" So I have the following
proposal:

   1. If %HOME% is defined, use it (current);
   2. If "emacs.d" is present in %UserProfile%, use it (new);
   3. Fallback to %AppData% (current).

In other words, I propose to introduce #2 without ruining the already
existing logic.

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