Hi,

The keyboard-escape-quit is bound to M-ESC ESC, however, in Windows 7, the "M-ESC" is captured by the system first. It makes the key binding nosense.

I aslo tried ESC ESC ESC, and it reported that "<escape> ESC is undefined".

Windows 7

Emacs GNU Emacs 27.0.50 (build 1, x86_64-w64-mingw32) of 2018-06-30

Best Regards,

Shuguang