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[perl #123466] Overloading for number-specific bitwise ops

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How should ‘&’ overloading work in the presence of the ‘bitwise’ feature?
Up till now it has been up to the overload implementation to decide whether & and | should have stringy or numeric behaviour.  But under the ‘bitwise’ feature it is the caller that decides.
So, under that feature, should we use the existing overload types (& | ^ ~) for the numeric ops?  Or should we introduce a new set of number-specific overload types that those ops trigger under the feature?  (I plan to introduce new overload types for the string-specific ops either way, since they are brand new operators [&. |. ^. ~.].)
In the first case, object implementations that want to know whether the caller specifically requested numeric behaviour will have to look at feature hints.  For warnings, we provide warnings::enabled, but feature.pm provides no such interface.  Should it?  (I don’t like the idea of adding it, because I prefer to think of feature.pm as a back-end for ‘use v5.xx’ and experimental.pm.  And whether a particular language feature has anything to do with feature.pm may be subject to change.)
In the second case, it might be confusing to have a separate num& overload type; even if it is not confusing, it is a bit clunky.
Does anybody currently overload & | ^ ~ for non-numeric uses?  The only use of these I am aware of is by modules like Math::BigInt, etc.
What I would like to do is just use & for &, leave feature.pm alone, and recommend that & overloads be number-specific regardless of perl version.  That seems the simplest and most straightforward approach overall.
-- 
Father Chrysostomos
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via perlbug:  queue: perl5 status: open
https://rt.perl.org/Ticket/Display.html?id=123466

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• [perl #123466] Overloading for number-specific bitwise ops by Father Chrysostomos via RT
• Re: [perl #123466] Overloading for number-specific bitwise ops by Aristotle Pagaltzis
• Re: [perl #123466] Overloading for number-specific bitwise ops by Father Chrysostomos via RT
• Re: [perl #123466] Overloading for number-specific bitwise ops by Ricardo Signes
• Re: [perl #123466] Overloading for number-specific bitwise ops by Aristotle Pagaltzis
• Re: [perl #123466] Overloading for number-specific bitwise ops by Ricardo Signes
• Re: [perl #123466] Overloading for number-specific bitwise ops by Father Chrysostomos via RT
• Re: [perl #123466] Overloading for number-specific bitwise ops by Ricardo Signes