Emacs 转义键

Question

目前，如果我按 C-h c ，然后按三次 ESC键盘上的键我得到结果

ESC ESC ESC (translated from <escape> <escape> <escape>) runs the command keyboard-escape-quit

ESC 和有什么区别和 <escape>以及如何使用这种差异来进行更多的键绑定(bind)？

Answer 1

在 emacs 中找到解决方案mailing list archive :

The escape key usually is linked to the escape char, but the two are different. Under a tty, Emacs receives the exact same byte-sequence from the terminal if you type the escape key or if you type C-[ (both send the escape char).

Under a GUI, on the other hand, Emacs can distinguish the two, so under a GUI, the escape key doesn't send ?\e (aka ESC for kbd) but escape (aka <escape> for kbd) which is usually turned into a ?\e via function-key-map (i.e. only if there's no corresponding binding for the key sequence with escape).

Same thing happens with tab (i.e. TAB (aka C-i) vs tab) and return (i.e. RET (aka C-m) vs return).