872     struct symbol *s1, *s2;  in FindFirstSets()  local
877         s2 = rp->rhs[i];  in FindFirstSets()
878         if( s2->type==TERMINAL ){  in FindFirstSets()
879           progress += SetAdd(s1->firstset,s2->index);  in FindFirstSets()
881         }else if( s2->type==MULTITERMINAL ){  in FindFirstSets()
882           for(j=0; j<s2->nsubsym; j++){  in FindFirstSets()
883             progress += SetAdd(s1->firstset,s2->subsym[j]->index);  in FindFirstSets()
886         }else if( s1==s2 ){  in FindFirstSets()
889           progress += SetUnion(s1->firstset,s2->firstset);  in FindFirstSets()
890           if( s2->lambda==LEMON_FALSE ) break;  in FindFirstSets()
5207 int SetUnion(char *s1, char *s2)  in SetUnion()  argument
5212     if( s2[i]==0 ) continue;  in SetUnion()