1072   Regexp* re1;  in MaybeConcatString()  local
1074   if ((re1 = stacktop_) == NULL || (re2 = re1->down_) == NULL)  in MaybeConcatString()
1077   if (re1->op_ != kRegexpLiteral && re1->op_ != kRegexpLiteralString)  in MaybeConcatString()
1081   if ((re1->parse_flags_ & FoldCase) != (re2->parse_flags_ & FoldCase))  in MaybeConcatString()
1094   if (re1->op_ == kRegexpLiteral) {  in MaybeConcatString()
1095     re2->AddRuneToString(re1->rune_);  in MaybeConcatString()
1097     for (int i = 0; i < re1->nrunes_; i++)  in MaybeConcatString()
1098       re2->AddRuneToString(re1->runes_[i]);  in MaybeConcatString()
1099     re1->nrunes_ = 0;  in MaybeConcatString()
1100     delete[] re1->runes_;  in MaybeConcatString()
1101     re1->runes_ = NULL;  in MaybeConcatString()
1106     re1->op_ = kRegexpLiteral;  in MaybeConcatString()
1107     re1->rune_ = r;  in MaybeConcatString()
1108     re1->parse_flags_ = flags;  in MaybeConcatString()
1113   re1->Decref();  in MaybeConcatString()