Display fish when no purpose

Install/Templates/home/config/fish/functions/fish_prompt.fish

@@ -35,6 +35,9 @@ function fish_prompt --description 'Write out the prompt'
     if test $status -eq 0
         set_color normal
         echo -n '['
+    else
+        set_color white
+	echo -n '[fish'
     end
     set_color blue
     echo -n $FISH_SHELL_PURPOSE