Better /u, /p support for setx command

share/completions/setx.fish

@@ -1,4 +1,16 @@
 function __setx_generate_args --description 'Function to generate args'
+  set --local previous_token (commandline --tokenize --cut-at-cursor)[-1]
+
+  if test "$previous_token" = '/u'
+    wmic UserAccount get Name | sed --quiet '1b;/./p'
+    return
+  end
+
+  if test "$previous_token" = '/p'
+    __fish_generate_password
+    return
+  end
+
   echo -e '/u\tSpecify the name or IP address of a remote computer
 /p\tSpecify the password of the user account that is specified in the /u parameter
 /f\tSpecify the file that you want to use