G'day ikegami,

++ You've obviously put a lot of work into this.

I haven't actually gone through and checked everything; however, two stood out, possibly because of the additional text: given and when.

According to the documentation, these became experimental in 5.18 (not 5.16). See "perl5180delta: The smartmatch family of features are now experimental".

— Ken

In reply to Re: Perl named operator and builtin subs introduced since 5.6 by kcott
in thread Finding when a feature or keyword was introduced by Bod

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