[fish] Return prompt to full ascii

config/fish/functions/fish_prompt.fish

@@ -25,16 +25,16 @@ function fish_prompt --description 'Write out the prompt'
     switch $fish_bind_mode
         case default
             set_color --bold --background red black
-            echo -n '⮜N⮞'
+            echo -n '<N>'
         case insert
             set_color --bold green
-            echo -n '⮜I⮞'
+            echo -n '<I>'
         case replace_one
             set_color --bold --background yellow black
-            echo -n '⮜R⮞'
+            echo -n '<R>'
         case visual
             set_color --bold --background magenta black
-            echo -n '⮜V⮞'
+            echo -n '<V>'
     end
     set_color normal