I for one didn't know they were properly deprecated. Though I've not used either since uni over two decades ago¹ on a somewhat off-standard Unix a few of the m

I for one didn't know they were properly deprecated. Though I've not used either since uni over two decades ago¹ on a somewhat off-standard Unix a few of the machines ran, so until this thread I can't say I was remembering that they existed at all. ---- [1] using grep -E when needed since² [2] and presumably grep -F too though I don't remember ever actually doing that