add fish config

fish/add-on.fish

@@ -8,6 +8,9 @@ else
     end
 end
 
+set -gx LANG C.UTF-8
+set -gx LC_ALL C.UTF-8
+
 # 禁用 Fish 默认欢迎语
 set -g fish_greeting ""
 
@@ -150,10 +153,6 @@ function portcheck
     echo $port
 end
 
-function nano --wraps nano
-    env LANG=C.UTF-8 LC_ALL=C.UTF-8 nano $argv
-end
-
 abbr -a port 'sudo ss -tulnp | grep'
 abbr -a process 'ps aux | grep'