style: format fish files with fish_indent

functions/__interactive_history_sub.fish

@@ -14,19 +14,19 @@
 function __interactive_history_sub
     set -l current_line (commandline -b)
     set -l last_cmd $history[1]
-    
+
     if string match -qr '(.+)/(.+)' -- "$current_line"
         set -l parts (string split '/' -- "$current_line")
         set -l old $parts[1]
         set -l new $parts[2]
         set -l history_index 1
-        
+
         if test (count $parts) -ge 3; and string match -qr '^[1-9][0-9]*$' -- "$parts[3]"
             set history_index $parts[3]
         end
-        
+
         set -l target_cmd $history[$history_index]
-        
+
         if test -n "$target_cmd"
             set -l expanded (string replace -a -- "$old" "$new" "$target_cmd")
             commandline -r "$expanded"