Stefan Holderbach 834522d002
Fix each while behavior when printing. (#6897)
Fixes #6895

Warning: `Iterator::map_while` does not return a `FusedIterator`!
Depending on the consuming adaptor or code (e.g. for loop) the iteration
may be stopped but this is not guaranteed.

Adds a test example but Examples handle iterators like
`FusedIterator` and thus don't catch the regression

Cleanup the message on another test
2022-10-27 23:45:45 +02:00
..
2022-04-20 08:50:14 -05:00