> Originally, if you typed an unknown command, it would just say "this is not a git command". Back in the 70s, Hal Finney was writing a BASIC interpreter to fit in 2K of ROM on the Mattel Intellivision system. This meant every byte was precious. To report a syntax error, he shortened the message for all errors to: EH? I still laugh about that. He was quite proud of it.
https://en.wikipedia.org/wiki/JOSS#/media/File:JOSS_Session....
https://en.wikipedia.org/wiki/JOSS
They had about 5KB of memory but comparing to the Intellivision the machine weighed about 5,000lbs.