Front page | perl.perl5.porters |
Postings from July 2020
On Fri, 3 Jul 2020 at 19:38, Paul "LeoNerd" Evans <leonerd@leonerd.org.uk> wrote: > > On Fri, 3 Jul 2020 19:22:03 +0200 > demerphq <demerphq@gmail.com> wrote: > > > We want to eventually ditch the perl 5 variant, and move to a saner > > perl 7 or 8 variant, which means that ast some point we want the > > parser to not know about 5 AT ALL, except when it throws exceptions. > > Making the rule be "the parser starts out expecting perl 5" simply > > does not make sense, for *any* version. Making the rule be "the parser > > starts out expecting perl $Latest" does. > > Right now, we start off in "version 5" mode until we see a > "use VERSION" which alters the idea. We should *strongly encourage* > everyone to be explicit with their version statements. It is a shame > more people haven't been using "use VERSION" so far, though that can be > explained by the fact it isn't very powerful yet. Suggestions have been > made that it should "use warnings" and so on - these could definitely > help. > > > How about this as an idea: > > At some point in the future, the semantics changes very slightly to: > We start off in "guess probably version 5" mode, wherein any > non-whitespace/comment syntax we see other than an explicit "use > VERSION" statement provides a warning that the user didn't declare > their version requirement. We'll continue presuming v5 for now unless > they asked for something else, but that warning gives people a hint, a > nudge that they should be explicit now. > > At some later point beyond that, it becomes a hard error. We can now > delete all the old version-5 compat code in the core because we know > (from the previous deprecation round and warnings) that everyone has > been explicit on their version requirements. I personally prefer the plan SawyerX has proposed, but I can live with yours too. cheers, Yves -- perl -Mre=debug -e "/just|another|perl|hacker/"Thread Previous | Thread Next