refactor(fio): refactor _comp_cmd_fio__{ => compgen_}engines

Author: akinomyoga

completions/fio

@@ -1,10 +1,8 @@
 # fio(1) completion                                        -*- shell-script -*-
 
-_comp_cmd_fio__engines()
+_comp_cmd_fio__compgen_engines()
 {
-    local IFS=$'\n'
-    REPLY=($("$1" --enghelp 2>/dev/null | command sed -ne '/^[[:space:]]/p'))
-    return $((!${#REPLY[*]}))
+    _comp_compgen_split -l -- "$("$1" --enghelp 2>/dev/null | command sed -ne '/^[[:space:]]/p'))"
 }
 
 _comp_cmd_fio()
@@ -40,8 +38,7 @@ _comp_cmd_fio()
             return
             ;;
         --enghelp)
-            _comp_cmd_fio__engines "$1" &&
-                _comp_compgen -- -W '"${REPLY[@]}"'
+            _comp_cmd_fio__compgen_engines "$1"
             return
             ;;
         --eta)
@@ -81,8 +78,7 @@ _comp_cmd_fio()
             return
             ;;
         --ioengine)
-            _comp_cmd_fio__engines "$1" &&
-                _comp_compgen -- -W '"${REPLY[@]}"'
+            _comp_cmd_fio__compgen_engines "$1"
             return
             ;;
         --exec_postrun | --exec_prerun)