Reverse Line Order with Notepad++ Python Script

def reverseAllLines():
    lines   = editor.getText().splitlines()
    lines.reverse()
    editor.setText(os.linesep.join(lines))

def reverseSelectedLines():
    import os

    staline = editor.lineFromPosition(editor.getSelectionStart())
    endline = editor.lineFromPosition(editor.getSelectionEnd())
    start   = editor.positionFromLine(staline)
    end     = editor.positionFromLine(endline)+editor.lineLength(endline)

    text    = editor.getTextRange(start, end)

    if text.endswith(os.linesep):
        eol = os.linesep
    else:
        eol = ''

    lines   = text.splitlines()
    lines.reverse()

    text    = os.linesep.join(lines)+eol

    editor.setSelection(start, end)
    editor.replaceSel(text)
    editor.setSelection(start, end) #keep selection after replace


editor.beginUndoAction()
if editor.getSelectionStart() == editor.getSelectionEnd():
    reverseAllLines()
else:
    reverseSelectedLines()
editor.endUndoAction()