> On Jun 6, 2019, at 22:01, Eli Zaretskii wrote: > >> From: Mattias Engdegård >> Date: Thu, 6 Jun 2019 14:44:31 +0200 >> Cc: Emacs developers , >> Jean-Christophe Helary >> >> 6 juni 2019 kl. 12.12 skrev Eli Zaretskii : >>> >>> It isn't hardcoded in Emacs, it' "hardcoded" in the way the OS produces character codes when you type keys on the keyboard. C-[ produces ESC for the same reason C-i produces TAB and C-j produces RET: these keys emit the same codes as the corresponding Ctrl sequences. >> >> The above is true when Emacs is running in a terminal. Otherwise, Emacs has code to emulate that behaviour (make_ctrl_char), so that we can enjoy a whiff of early 1960s bit-paired keyboards. And this does appear to be hard-coded, in the sense that it cannot be disabled. > > Why is it useful to have different behavior on GUI and TTY frames? Because expectations are different ? Jean-Christophe Helary ----------------------------------------------- http://mac4translators.blogspot.com @brandelune