thread_is_working == false &&
(current_tab == dump && (dump_rom || read_nvram_or_disk) && driver == selected) ||
(current_tab == misc && (
selected_action == action_x && (
command_has_in_filename == true && textbox_filename != ""
) || command_has_in_filename == false
) || (
selected_action == action_x && (
繰り返し
)
)

misc の tab では action の数が可変なので1行では記載できないと思う.

tab misc の form の inputfile 有効条件
key "command" で valueに "in:filename." が含まれている場合.