make BreaklineCallback private (`breaklineCallback`)

option.go

@@ -237,7 +237,7 @@ func OptionShowCompletionAtStart() Option {
 // OptionBreakLineCallback to run a callback at every break line
 func OptionBreakLineCallback(fn func(*Document)) Option {
 	return func(p *Prompt) error {
-		p.renderer.BreakLineCallback = fn
+		p.renderer.breakLineCallback = fn
 		return nil
 	}
 }

render.go

@@ -12,7 +12,7 @@ type Render struct {
 	out                ConsoleWriter
 	prefix             string
 	livePrefixCallback func() (prefix string, useLivePrefix bool)
-	BreakLineCallback  func(*Document)
+	breakLineCallback  func(*Document)
 	title              string
 	row                uint16
 	col                uint16
@@ -236,8 +236,8 @@ func (r *Render) BreakLine(buffer *Buffer) {
 	r.out.WriteStr(buffer.Document().Text + "\n")
 	r.out.SetColor(DefaultColor, DefaultColor, false)
 	debug.AssertNoError(r.out.Flush())
-	if r.BreakLineCallback != nil {
-		r.BreakLineCallback(buffer.Document())
+	if r.breakLineCallback != nil {
+		r.breakLineCallback(buffer.Document())
 	}
 
 	r.previousCursor = 0

render_test.go

@@ -100,7 +100,7 @@ func TestBreakLineCallback(t *testing.T) {
 		t.Errorf("i should initially be 0, before applying a break line callback")
 	}
 
-	r.BreakLineCallback = func(doc *Document) {
+	r.breakLineCallback = func(doc *Document) {
 		i++
 	}
 	r.BreakLine(b)