fix(cmd_backup): Use restic.TagLists

cmd/restic/cmd_backup.go

@@ -83,7 +83,7 @@ type BackupOptions struct {
 	ExcludeLargerThan       string
 	Stdin                   bool
 	StdinFilename           string
-	Tags                    restic.TagList
+	Tags                    restic.TagLists
 	Host                    string
 	FilesFrom               []string
 	FilesFromVerbatim       []string
@@ -682,7 +682,7 @@ func runBackup(opts BackupOptions, gopts GlobalOptions, term *termstatus.Termina
 
 	snapshotOpts := archiver.SnapshotOptions{
 		Excludes:       opts.Excludes,
-		Tags:           opts.Tags,
+		Tags:           opts.Tags.Flatten(),
 		Time:           timeStamp,
 		Hostname:       opts.Host,
 		ParentSnapshot: *parentSnapshotID,

cmd/restic/integration_test.go

@@ -662,7 +662,7 @@ func TestBackupTags(t *testing.T) {
 		"expected no tags, got %v", newest.Tags)
 	parent := newest
 
-	opts.Tags = []string{"NL"}
+	opts.Tags = restic.TagLists{[]string{"NL"}}
 	testRunBackup(t, "", []string{env.testdata}, opts, env.gopts)
 	testRunCheck(t, env.gopts)
 	newest, _ = testRunSnapshots(t, env.gopts)