refactor(find): refactor the search-loop for command offset

Author: akinomyoga

completions/find

@@ -8,9 +8,8 @@ _comp_cmd_find()
     _comp_initialize -- "$@" || return
 
     local i
-    for i in ${!words[*]}; do
+    for ((i = 1; i < cword; i++)); do
         if [[ ${words[i]} == -@(exec|ok)?(dir) ]]; then
-            ((cword > i)) || break
             _comp_command_offset $((i + 1))
             return
         fi