Hi, I read that line as "very old implementations of regular expressions in different languages and systems".
And indeed this documentation hasn't changed since Go v1 (<https://pkg.go.dev/regexp@go1#CompilePOSIX>), so I'm pretty sure it means that. In any case I don't think it should affect your usage of the package :) Joshua -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/87eeago0fk.fsf%40mail.google.com.
