X:  &ast.Ident{Name: "DW_ABRV_PUTVAR_START"},
				Y:  &ast.BasicLit{Kind: token.INT, Value: strconv.Itoa(abbrevs[abbrev])}}}}
	}
	if pvacfg.attr != "" {
		return pvacfgvisitnode(pvacfg.then, tag, append(path, pvacfg), abbrevs)
	} else if pvacfg.cond != nil {
		if bx, _ := pvacfg.cond.(*ast.BinaryExpr); bx != nil && bx.Op == token.EQL && exprToString(bx.X) == "v.Tag" {
			// this condition is "v.Tag == Xxx", check the value of 'tag'