ERR wrong number of arguments for 'zrem' command.

[cachalots]

package main

import (
	"context"
	"encoding/json"
	"fmt"

	"github.com/redis/go-redis/v9"
	// "github.com/go-redis/redis/v8"
)

type Member struct {
	FirstName string
	LastName  string
}

func (m Member) MarshalBinary() ([]byte, error) {
	return json.Marshal(m)
}

func main() {
	client := redis.NewClient(&redis.Options{
		Addr:     "127.0.0.1:6379",
	})
	err := client.ZRem(context.Background(), "members", Member{
		FirstName: "first name",
		LastName:  "last name",
	}).Err()
	
	fmt.Println(err)
}

It works in v8 and returns an error in v9.

ERR wrong number of arguments for 'zrem' command

0064199#diff-3a0c07a8d1ecc59f4efd44d095ce531253130732aee63c1587ed2f2554a6c068R89

This code causes arg not to be appended to dst.
ZADD did not use this code, it was not affected.

[monkey92t]

fix by #2489