在下面的C代码中是用于所有这些定义的八进制文字？即使他们从多个零开始？
#define TCL_REG_BASIC 000000 /* BREs (convenience). */
#define TCL_REG_EXTENDED 000001 /* EREs. */
#define TCL_REG_ADVF 000002 /* Advanced features in EREs. */
#define TCL_REG_ADVANCED 000003 /* AREs (which are also EREs). */
#define TCL_REG_QUOTE 000004 /* No special characters, none. */
#define TCL_REG_NOCASE 000010 /* Ignore case. */
#define TCL_REG_NOSUB 000020 /* Don't care about subexpressions. */
#define TCL_REG_EXPANDED 000040 /* Expanded format, white space & comments. */
#define TCL_REG_NLSTOP 000100 /* \n doesn't match . or [^ ] …