I don't remember what was the last instance of a command barfing ansi escape sequences into a non-tty output stream, but it was just a couple days ago. I encoun

I don't remember what was the last instance of a command barfing ansi escape sequences into a non-tty output stream, but it was just a couple days ago. I encounter badly-behaved software more frequently than your seem to, and I have more confidence in "don't provide colour (or other fancy text) unless the user asks for it" than "it's fine except for this set of exceptions that who knows if it's complete or not".