Root cause of typing echo + cursor movement failure:
VoiceOver tracks the focused element (EmacsAccessibilityBuffer, AXTextArea).
Notifications from EmacsView (AXGroup) were ignored because VoiceOver
doesn't monitor non-focused elements for text changes.
Fix: ns_draw_window_cursor now calls [view accessibilityFocusedUIElement]
to find the right EmacsAccessibilityBuffer, and posts ValueChanged +
SelectedTextChanged on IT instead of on the view.
Also: postAccessibilityUpdatesForWindow now uses [self accessibilityStringForRange:]
instead of [view accessibilityStringForRange:] for typing echo text.
Daneel
946b138a0a