example

# This was my initial code, which sets the cursor before the prompt:

func _input(event):
    if Input.is_key_pressed(KEY_ENTER):
        insert_text_at_cursor(">")

# And this is how I tried to fix it, which seems to just make a mess of things:

func _input(event):
    if Input.is_key_pressed(KEY_ENTER):
        insert_text_at_cursor("\n")
        current_line += 1
        cursor_set_line(current_line)
        insert_text_at_cursor(">")
        cursor_set_column(2)