STACK_PUSH        667 regexec.c      #define STACK_PUSH_ALT(pat,s,sprev,keep)     STACK_PUSH(STK_ALT,pat,s,sprev,keep)
STACK_PUSH        668 regexec.c      #define STACK_PUSH_POS(s,sprev,keep)         STACK_PUSH(STK_POS,NULL_UCHARP,s,sprev,keep)
STACK_PUSH        669 regexec.c      #define STACK_PUSH_POS_NOT(pat,s,sprev,keep) STACK_PUSH(STK_POS_NOT,pat,s,sprev,keep)
STACK_PUSH        672 regexec.c              STACK_PUSH(STK_LOOK_BEHIND_NOT,pat,s,sprev,keep)