From f521e51383edae8e5dfc98fce17d599b33e304dc Mon Sep 17 00:00:00 2001
From: monkey92t <golang@88.com>
Date: Fri, 28 May 2021 23:15:26 +0800
Subject: [PATCH] the "keys have no pre-determined position" command specifies
 the position of the key (#1769)

---
 commands.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/commands.go b/commands.go
index 3dc06bb6..516c1d9c 100644
--- a/commands.go
+++ b/commands.go
@@ -2380,6 +2380,7 @@ func (c cmdable) ZDiff(ctx context.Context, keys ...string) *StringSliceCmd {
 	}
 
 	cmd := NewStringSliceCmd(ctx, args...)
+	cmd.setFirstKeyPos(2)
 	_ = c(ctx, cmd)
 	return cmd
 }
@@ -2395,6 +2396,7 @@ func (c cmdable) ZDiffWithScores(ctx context.Context, keys ...string) *ZSliceCmd
 	args[len(keys)+2] = "withscores"
 
 	cmd := NewZSliceCmd(ctx, args...)
+	cmd.setFirstKeyPos(2)
 	_ = c(ctx, cmd)
 	return cmd
 }
@@ -2658,6 +2660,7 @@ func (c cmdable) MemoryUsage(ctx context.Context, key string, samples ...int) *I
 		args = append(args, "SAMPLES", samples[0])
 	}
 	cmd := NewIntCmd(ctx, args...)
+	cmd.setFirstKeyPos(2)
 	_ = c(ctx, cmd)
 	return cmd
 }
@@ -2674,6 +2677,7 @@ func (c cmdable) Eval(ctx context.Context, script string, keys []string, args ..
 	}
 	cmdArgs = appendArgs(cmdArgs, args)
 	cmd := NewCmd(ctx, cmdArgs...)
+	cmd.setFirstKeyPos(3)
 	_ = c(ctx, cmd)
 	return cmd
 }
@@ -2688,6 +2692,7 @@ func (c cmdable) EvalSha(ctx context.Context, sha1 string, keys []string, args .
 	}
 	cmdArgs = appendArgs(cmdArgs, args)
 	cmd := NewCmd(ctx, cmdArgs...)
+	cmd.setFirstKeyPos(3)
 	_ = c(ctx, cmd)
 	return cmd
 }