fmt.Fprintf(os.Stderr, "Specify a command, asshole.\n\n")
Rather than the current:
fmt.Fprintf(os.Stderr, "Please specify a command.\n\n")
Not realizing this at first caused me a fair amount of confusion about what everyone was talking about.
I don't mind a bit of humanity in my soul-less machines
If you write code for yourself then that's one thing, as soon as you write code for potential distribution to a large audience (cron is present on just about any unix machine) then I think you should restrain yourself from trying to be funny (or at a minimum from having your software by proxy call people names).
Call me old fashioned, it just doesn't work for me.
On the other hand, IMO, the biggest profanity you can put in an error message is an error code and nothing more. Now THAT is how to mistreat your users!
I wonder if there were similar discussions about the insults sudo gives you on OpenBSD (http://prefetch.net/blog/index.php/2012/08/01/sudo-insults-w...)...
https://github.com/dshearer/jobber/commit/7766f3fc2d61ba8008...
I'll give the benefit of the doubt and say this was an accidental commit after a frustrating debugging session but yeah, don't do this to your users.