ONIG_SYN_OP_QMARK_ZERO_ONE 815 regint.h ONIG_SYN_OP_QMARK_ZERO_ONE | \ ONIG_SYN_OP_QMARK_ZERO_ONE 3885 regparse.c if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_QMARK_ZERO_ONE)) break; ONIG_SYN_OP_QMARK_ZERO_ONE 69 regsyntax.c ONIG_SYN_OP_PLUS_ONE_INF | ONIG_SYN_OP_QMARK_ZERO_ONE | ONIG_SYN_OP_VBAR_ALT ) ONIG_SYN_OP_QMARK_ZERO_ONE 92 regsyntax.c ONIG_SYN_OP_QMARK_ZERO_ONE | ONIG_SYN_OP_DECIMAL_BACKREF |