bitset_contain
pstr->tip_context = (bitset_contain (pstr->word_char, c)
if (bitset_contain (input->word_char, c))
if (bitset_contain (acceptable, NEWLINE_CHAR))
if (bitset_contain (dests_ch[j], NEWLINE_CHAR))
bool accepts_newline = bitset_contain (accepts, NEWLINE_CHAR);
if (type == CHARACTER && !bitset_contain (dests_ch[j], node->opr.c))
if (!bitset_contain (node->opr.sbcset, ch))