Don Hopkins wrote:
emacs /usr/ucb/sendmail (or whatever directory you
keep all your
stinky hippie software in), ^S DEBUG ESC M-b ^D ^Q ^@ ^X ^S (that is,
null out the first character of the “DEBUG” command).
This piqued my interest, because exiting incremental search with ESC
doesn't look familiar to me (unless in ITS). I tried it in a recent
Emacs, and just got "ESC M-b is undefined". Emacs 18 was contemporary
with the Morris Worm. Would it allow ESC?