Ok here is a patch for Win32::Unicode::Process

sub execW {
    my $pi = Win32::Unicode::Process::_create_process(@_) or return 1;
    close_handle($pi->{thread_handle});
    close_handle($pi->{process_handle});
    exit 0; ## the end
}

sub _create_process {
    @_ or return;
    use Win32::ShellQuote();
    my( $program ) = @_;
    my $commandline = utf8_to_utf16( Win32::ShellQuote::quote_system_s
+tring(  @_ ) ).NULL;
    return create_process( $program, $commandline );
}
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