can_be_null       396 maint/gnulib/lib/regcomp.c 	    bufp->can_be_null = 1;
can_be_null       713 maint/gnulib/lib/regcomp.c   preg->can_be_null = 0;
can_be_null       446 maint/gnulib/lib/regex.h   unsigned __REPB_PREFIX(can_be_null) : 1;
can_be_null       597 maint/gnulib/lib/regexec.c 		    && start != last_start && !preg->can_be_null)