Don't show ... in help for named slice types.

mapper_test.go

@@ -1,6 +1,7 @@
 package kong_test
 
 import (
+	"bytes"
 	"fmt"
 	"io/ioutil"
 	"net/url"
@@ -166,3 +167,17 @@ func TestFileContentFlag(t *testing.T) {
 	require.NoError(t, err)
 	require.Equal(t, []byte("hello world"), []byte(cli.File))
 }
+
+func TestNamedSliceTypesDontHaveEllipsis(t *testing.T) {
+	var cli struct {
+		File kong.FileContentFlag
+	}
+	b := bytes.NewBuffer(nil)
+	parser := mustNew(t, &cli, kong.Writers(b, b), kong.Exit(func(int) { panic("exit") }))
+	// Ensure that --help
+	require.Panics(t, func() {
+		_, err := parser.Parse([]string{"--help"})
+		require.NoError(t, err)
+	})
+	require.NotContains(t, b.String(), `--file=FILE-CONTENT-FLAG,...`)
+}

model.go

@@ -251,7 +251,7 @@ func (v *Value) IsCumulative() bool {
 
 // IsSlice returns true if the value is a slice.
 func (v *Value) IsSlice() bool {
-	return v.Target.Kind() == reflect.Slice
+	return v.Target.Type().Name() == "" && v.Target.Kind() == reflect.Slice
 }
 
 // IsMap returns true if the value is a map.