@RedTechEngineer @kirby @lanodan Nah (not that it would be large enough to notice), just it's in the POSIX specification for the userspace, which says what you've got to have and where and what options it has to take and how it has to behave. The reason you've gotta type `grep -E` or `egrep` to get "extended" regexes is that POSIX specifies that grep regexes have to behave a certain way. Even GNU stuff doesn't follow POSIX exactly ( https://wiki.wlug.org.nz/POSIX_ME_HARDER ):

> To have an excuse to say that we still support the spec, if you define the environment variable, POSIX_ME_HARDER was the original way. Then a slightly prudish board member convinced me to change it to POSIXLY_CORRECT which I now think was a mistake. I should have left it as POSIX_ME_HARDER.