2017-11-12 9:56 GMT+01:00 Angelo Graziosi <angelo.g0@libero.it>:

Fabrice Popineau wrote:
>
> Hmm ... besides copying the whole Emacs directory on an usb stick, what else do I
> need to do in order to use emacs from this stick on another computer ?

..an app to be really portable cannot write the host machine, so .emacs.d should go on the device where the portable app is installed.

And the more Windows compliant the app will be, the less portable it will become.

Obviously it cannot write the registry, what PortableApps do...

When does Emacs write the registry ?

maybe starting Emacs with this bat is sufficient:

cat E:/Emacs_portable/bin/runemacs_portable.bat
set HOME=%~dp0..\HOME
"%~dp0runemacs.exe" %*

Setting HOME is all that is needed.

I even change PATH and all my environment from init.el.

Fabrice