Home, End, PageUp, PageDown etc on external keyboard do not work
貢獻者指南
技術棧
objective c
領域
desktop
議題類型
bug
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
half day
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
needs investigation
前置要求
macOS developmentObjective C basics
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
20
研究方向
Investigate how MacDown handles key events. The issue likely relates to the NSTextView subclass's keyDown: method not properly passing function keys like Home, End, PageUp, PageDown to the responder chain. Look at the MacDown source code, specifically the editor view files, to see how keyboard events are intercepted. Check if there is a custom key handler that blocks these keys or if the key equivalents are missing. Compare with system level key bindings and consider adding support for external keyboards with different key codes.
