So Fedora 38 has chosen to break fgrep and egrep, to the fun of everyone who has them in scripts, especially scripts in crontab entries.

$ fgrep fred /dev/null
fgrep: warning: fgrep is obsolescent; using grep -F

Adding output to standard error is an *incompatible change*. And this is happening only because the GNU Grep people are <redacted because I cannot think of quite the right phrase>.

@cks @danmcd There's a line I once saw about unsupervised children and compilers. Do you remember it, @enoclue ?