bug#25038: 25.1; Accent in Windows username prevents Emacs from loading customizations

[Eli Zaretskii <eliz@gnu.org>]

> From: <dalokmarcinak@gmail.com>
> Date: Sat, 26 Nov 2016 19:33:29 +0100
> 
> If I start Emacs by opening (double-clicking) a file that has its extension associated
> with Emacs, my user directory is not found, my .emacs is not run
> etc. This does not happen if I start emacs from the command-line or by
> double-clicking the executable, this way my user directory is correctly found.
> 
> Here is the error message:
> 
> Warning (initialization): Unable to create `user-emacs-directory' (~/.emacs.d/).
> Any data that would normally be written there may be lost!
> If you never want to see this message again,
> customize the variable `user-emacs-directory-warning'.
> Error (initialization): User M rton has no home directory
> Warning (initialization): An error occurred while loading ‘nil’:
> File error: Opening directory, No such file or directory, c:/Users/M\341rton/AppData/Roaming
> To ensure normal operation, you should investigate and remove the
> cause of the error in your initialization file. Start Emacs with
> the ‘--debug-init’ option to view a complete error backtrace.

What do these display:

  M-: (user-login-name) RET
  M-: (user-real-login-name) RET

Please try this both in the session started by clicking a file
associated with Emacs and in a session started from the command-line.

Thanks.