Oooh, neat. I didn’t know about that. Thanks. That better not have been around since the 1990s or something, with me always searching the bash(1) man page to find builtin information.
$ help help|head -n2
help: help [-dms] [pattern ...]
    Display information about builtin commands.
$ git clone https://git.savannah.gnu.org/git/bash.git
$ cd bash
$ git log -S "Display information about builtin commands."|grep ^commit|tail -n1
commit 3185942a5234e26ab13fa02f9c51d340cec514f8
$ git show 3185942a5234e26ab13fa02f9c51d340cec514f8|grep ^Date
Date:   Mon Jan 12 13:36:28 2009 +0000
$
Well, it’s not the 1990s, but still. Dammit.



There’s a case that at some point — maybe not today — computer controlled cars should have more-relaxed restrictions on things like speed and following distance, just because they won’t be limited by things like human reaction time and senses.