From 7ae289125260e7af5d7810bf560f2546c7bc6b19 Mon Sep 17 00:00:00 2001
From: Nick Craig-Wood <nick@craig-wood.com>
Date: Sat, 8 May 2021 13:15:30 +0100
Subject: [PATCH] fs: Add Exclusive parameter to Option to choose Examples only
 #3455

---
 fs/backend_config.go | 8 +++++---
 fs/config/ui.go      | 2 +-
 fs/fs.go             | 1 +
 fs/fs_test.go        | 1 +
 4 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/fs/backend_config.go b/fs/backend_config.go
index 47fb02fbb..9516ac250 100644
--- a/fs/backend_config.go
+++ b/fs/backend_config.go
@@ -161,6 +161,7 @@ func ConfigConfirm(state string, Default bool, name string, help string) (*Confi
 				Value: "false",
 				Help:  "No",
 			}},
+			Exclusive: true,
 		},
 	}, nil
 }
@@ -182,9 +183,10 @@ func ConfigChooseFixed(state string, name string, help string, items []OptionExa
 	choose := &ConfigOut{
 		State: state,
 		Option: &Option{
-			Name:     name,
-			Help:     help,
-			Examples: items,
+			Name:      name,
+			Help:      help,
+			Examples:  items,
+			Exclusive: true,
 		},
 	}
 	choose.Option.Default = choose.Option.Examples[0].Value
diff --git a/fs/config/ui.go b/fs/config/ui.go
index c68dc183c..dbd4a512c 100644
--- a/fs/config/ui.go
+++ b/fs/config/ui.go
@@ -402,7 +402,7 @@ func ChooseOption(o *fs.Option, name string) string {
 					help = append(help, example.Help)
 				}
 			}
-			in = Choose(o.Name, values, help, true)
+			in = Choose(o.Name, values, help, !o.Exclusive)
 		} else {
 			fmt.Printf("%s> ", o.Name)
 			in = ReadLine()
diff --git a/fs/fs.go b/fs/fs.go
index c0bd0e65e..0532b24ec 100644
--- a/fs/fs.go
+++ b/fs/fs.go
@@ -184,6 +184,7 @@ type Option struct {
 	IsPassword bool             // set if the option is a password
 	NoPrefix   bool             // set if the option for this should not use the backend prefix
 	Advanced   bool             // set if this is an advanced config option
+	Exclusive  bool             // set if the answer can only be one of the examples
 }
 
 // BaseOption is an alias for Option used internally
diff --git a/fs/fs_test.go b/fs/fs_test.go
index 1f7aba038..4dad61f01 100644
--- a/fs/fs_test.go
+++ b/fs/fs_test.go
@@ -242,6 +242,7 @@ func TestOptionMarshalJSON(t *testing.T) {
 "IsPassword": false,
 "NoPrefix": false,
 "Advanced": true,
+"Exclusive": false,
 "DefaultStr": "false",
 "ValueStr": "true",
 "Type": "bool"