固こ有ゆう選せん択たく字じ句く

noun

inherently optional token

Technical computing term for a token that is optional by its nature, not because of a grammar rule. Used in parsing and compiler contexts.

• このパーサーでは、固こ有ゆう選せん択たく字じ句くは常つねに省しょう略りゃく可か能のうとみなされる。

  In this parser, inherently optional tokens are always considered omissible.