There seems to be always someone who comes along who hasn't run `file /usr/bin/fgrep` on a relevant operating system that uses GNU tooling and opines that "They

There seems to be always someone who comes along who hasn't run `file /usr/bin/fgrep` on a relevant operating system that uses GNU tooling and opines that "They could always just replace them with 2-line shell scripts.". There no doubt will be someone on Hacker News. They already were 2-line shell scripts. When Paul Eggert made the change in August 2021, xe changed a 2-line shell script into a 4-line shell script with an echo >&2 in the middle.