I don't think that's really useful. I think it's really bug that message boxes accept "anything" messages and I would opt for removing it:
https://github.com/pure-data/pure-data/issues/1491 (I remember I had brought this issue up somewhere, but apparantly didn't open a ticket on GitHub until now.)
Then the only selectors you could possible get are "float", "symbol", "list" and "pointer", which is not too useful I guess :-)
On 02.12.2021 09:02, Sebastian Shader via Pd-list wrote:
Imo it still seems to me that $0 in message boxes should get the selector since $1 etc. in message boxes are positional elements in messages at "msg-passing time" and $1 etc. are positional elements (arguments) in objects at load-time.
- seb
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