fix: * 键在空文本时作为普通字符而非退格键处理

- 当 freetext 为空时，* 应该添加到文本中 - 只有 freetext 有内容时，* 才作为退格键
2026-03-30 18:05:05 +08:00
parent bcd851ff0b
commit 3bae027c5e
1 changed files with 2 additions and 2 deletions
@@ -926,8 +926,8 @@ bool CannedMessageModule::handleFreeTextInput(const InputEvent *event)
        return handleTabSwitch(event); // Reuse tab logic
    }

-    // '*' key from TCA9535 numpad acts as backspace
-    if (event->kbchar == '*') {
+    // '*' key from TCA9535 numpad acts as backspace (only if there's text)
+    if (event->kbchar == '*' && this->freetext.length() > 0) {
        payload = 0x08;
        lastTouchMillis = millis();
        runOnce();