On Wed, Apr 27, 2022 at 7:29 PM yary <not....@gmail.com> wrote: > It's like the "where" clause has its own signature-like list of types it will > accept. When the where clause uses the default topic "$_" then that topic has > no constraint, and MAIN can probe if "--dir=something" should be interpreted > as a flag Bool::True or if it should be the string "something". When the > "where" clause has only $dir in the body, the optimizer can specialize it to > only take Str, and then MAIN doesn't need to probe the Bool::True case.
Sounds a good guess! What I am a little surprised here is that it seems to me this behavior, that has changed during time, is not well documented, at least according to me. Luca
