searchsorted on interesting ranges

[jw3126]

Inspired by @TotalVerb #34315 (comment)

julia> r = 1f8-10:1f8
9.999999f7:1.0f0:1.0f8

julia> searchsorted(r, 1f8)
9:9

julia> searchsorted(collect(r), 1f8)
5:9

[aplavin]

Also encountered this bug! Seems like now all ranges searchsorted return singleton index ranges, so presumably quite a lot should be changed to fix...

[oscardssmith]

This range math is always fun.

[Moelf]

julia> r = 1f8-10:1f8

julia> collect(r)
9-element Vector{Float32}:
 9.999999f7
 9.999999f7
 9.999999f7
 9.999999f7
 1.0f8
 1.0f8
 1.0f8
 1.0f8
 1.0f8

this is considered correct? Basically, do we want both to return 9:9(not really possible) or both to return 5:9(possible but feels wrong for the range).

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Seems like now all ranges searchsorted return singleton index ranges,

Presumably because ranges have higher precision (twice precision), so even though there are duplicated elements when you collect(), if you keep it as a range it can tell each element is unique