vim-55/src/regexp.c

117  * <aa>\@!<bb>	BRANCH NOMATCH <aa> --> END  <bb> --> END
140 #define END		0	/*	End of program or NOMATCH operand. */
153 #define NOMATCH		10	/* node check for no match with operand */
1522 		    case '!': lop = NOMATCH; break;		  /* \@! */
3214     , RS_NOMATCH	/* NOMATCH */
4917 	  case NOMATCH:
5123 	    /* Pop the state.  If the operand matches for NOMATCH or
5126 	    if (status == (rp->rs_no == NOMATCH ? RA_MATCH : RA_NOMATCH))
6098      * can also appear in a NOMATCH operand).
6473       case NOMATCH:
6474 	p = "NOMATCH";