My serious LISP work was done in Franz LISP, which had a more UNIX-like compile and run interface.
Warren Teitelman originally wrote DWIM to fix his typos and spelling
errors, so it was somewhat idiosyncratic to his style, and would often make
hash of anyone else's typos if they were stylistically different. Some
victims of DWIM thus claimed that the acronym stood for ?Damn Warren?s
Infernal Machine!'.
In one notorious incident, Warren added a DWIM feature to the command
interpreter used at Xerox PARC. One day another hacker there typed delete
*$ to free up some disk space. (The editor there named backup files by
appending $ to the original file name, so he was trying to delete any
backup files left over from old editing sessions.) It happened that there
weren't any editor backup files, so DWIM helpfully reported "*$ not found,
assuming you meant 'delete *'". It then started to delete all the files on
the disk! The hacker managed to stop it with a {Vulcan nerve pinch} after
only a half dozen or so files were lost.
The disgruntled victim later said he had been sorely tempted to go to
Warren's office, tie Warren down in his chair in front of his workstation,
and then type delete *$ twice.I only have experience with Smalltalk (VisualWorks back then).
The Lisp and Mesa/Cedar environments is only due to my archeologist work from programming languages and environments.