WORD_FIRST       1804 lib/regcomp.c  	      token->opr.ctx_type = WORD_FIRST;
WORD_FIRST       2316 lib/regcomp.c  	   & (WORD_DELIM | NOT_WORD_DELIM | WORD_FIRST | WORD_LAST))
WORD_FIRST       2325 lib/regcomp.c  	      token->opr.ctx_type = WORD_FIRST;