What is the behavior of the QUIT character (^\) when typing a command in an interactive sh shell?
https://pubs.opengroup.org/onlinepubs/9699919799/utilities/sh.html just says that if the shell is interactive, SIGQUIT shall be ignored. Results with various POSIX and non-POSIX shells: With bash 5.2.2, mksh 59c and fish 3.5.1, typing ^\ is entirely ignored. With yash 2.52 and zsh 5.9, ditto, but with a terminal beep. With ksh93 93u+m/1.0.4, it produces a ^\ character: $ echo a^\b | hd 00000000 61 1c 62 0a |a.b.| 00000004 With dash 0.5.11+git20210903+057cd650a4ed-9, it discards all the characters already typed (with the "stty -noflsh" default). With posh 0.14.1, it aborts the command line and a new prompt is displayed. -- Vincent Lefèvre <vinc...@vinc17.net> - Web: <https://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
