fish: function argument names

fish/functions/class_version.fish

@@ -1,4 +1,4 @@
-function class_version --argument-name class_file
+function class_version --argument-names class_file
 
     if not string match -q '*.class' "$class_file"
         echo "Expected a Java class file but got: $class_file"

fish/functions/manifest.fish

@@ -1,3 +1,3 @@
-function manifest --argument-name jar_file
+function manifest --argument-names jar_file
     unzip -p "$jar_file" META-INF/MANIFEST.MF
 end

fish/functions/set_cursor.fish

@@ -1,4 +1,4 @@
-function set_cursor --argument cursor_type
+function set_cursor --argument-names cursor_type
     switch "$cursor_type"
         case block-blink
             echo -en "\x1b[1 q"