From 5296f72189fc6ff5215e2a7a4e0f962137973c7d Mon Sep 17 00:00:00 2001
From: Corey Johnson <probablycorey@gmail.com>
Date: Tue, 10 Dec 2019 15:30:41 -0800
Subject: [PATCH] Better messaging for `gh pr checkout`

---
 command/issue.go |  2 +-
 command/pr.go    | 10 ++++++++--
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/command/issue.go b/command/issue.go
index 958bcb9bd..cc93c6e81 100644
--- a/command/issue.go
+++ b/command/issue.go
@@ -108,7 +108,7 @@ func issueList(cmd *cobra.Command, args []string) error {
 		msg := "There are no open issues"
 
 		userSetFlags := false
-		cmd.Flags().VisitAll(func(f *pflag.Flag) {
+		cmd.Flags().Visit(func(f *pflag.Flag) {
 			userSetFlags = f.Changed || userSetFlags
 		})
 		if userSetFlags {
diff --git a/command/pr.go b/command/pr.go
index e72b73024..790e27fef 100644
--- a/command/pr.go
+++ b/command/pr.go
@@ -1,6 +1,7 @@
 package command
 
 import (
+	"errors"
 	"fmt"
 	"io"
 	"os"
@@ -45,8 +46,13 @@ A pull request can be supplied as argument in any of the following formats:
 var prCheckoutCmd = &cobra.Command{
 	Use:   "checkout {<number> | <url> | <branch>}",
 	Short: "Check out a pull request in Git",
-	Args:  cobra.MinimumNArgs(1),
-	RunE:  prCheckout,
+	Args: func(cmd *cobra.Command, args []string) error {
+		if len(args) < 1 {
+			return errors.New("requires a PR number as an argument")
+		}
+		return nil
+	},
+	RunE: prCheckout,
 }
 var prListCmd = &cobra.Command{
 	Use:   "list",