Hello, I now need to learn regular expressions for my work and since I can choose tool, I decided combine it with learning Go. When documentation of "regexp" package (I hope that I use this name correctly) is in most part clear to me, one thing is unclear to me. Since, I probably raise many more questions about Go standard library, I decided to name it as such.
In the description of function "func CompilePOSIX" (https://pkg.go.dev/regexp) we can read. BEGINNING That is, when matching against text, the regexp returns a match that begins as early as possible in the input (leftmost), and among those it chooses a match that is as long as possible. This so-called leftmost-longest matching is the same semantics that early regular expression implementations used and that POSIX specifies. END Line "early regular expression implementations used and that POSIX specifies" is a bit confusing to me. I guess it can mean "old implementations Go regexp package", but also very old implementations of regular expressions in different languages and systems (?). Can someone help me understand this text? Best Kamil Ziemian -- 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/8e002363-da47-4c43-953f-a66fefc1bcdcn%40googlegroups.com.
