Julia 1.9 does not have _maybetail in Base

[jaemolihm]

_maybetail is used twice:

QuasiArrays.jl/src/indices.jl

Lines 113 to 118 in b93bc59

	to_indices(A::AbstractQuasiArray, inds, I::Tuple{Any,Vararg{Any}}) =
	(@_inline_meta; (to_quasi_index(A, eltype(inds[1]), I[1]), to_indices(A, _maybetail(inds), tail(I))...))
	@inline to_indices(A::AbstractQuasiArray, inds, I::Tuple{CartesianIndex, Vararg{Any}}) =
	to_indices(A, inds, (I[1].I..., tail(I)...))
	@inline to_indices(A::AbstractQuasiArray, inds, I::Tuple{Colon, Vararg{Any}}) =
	(uncolon(inds, I), to_indices(A, _maybetail(inds), tail(I))...)

There is a related fix in a different package JuliaArrays/EndpointRanges.jl#25

[dlfivefifty]

Thanks for this. I always wait until RC stage before making changes in my packages (as sometimes changes on master end up being reverted)

[jagot]

Bump :)

I've tried replacing _maybetail(inds) by inds[2:end], as suggested here: JuliaLang/julia#23822 (comment), here and in ContinuumArrays.jl.

Additionally, it seems the call signature for uncolon was changed with this PR, which affects to_indices; dropping the second argument seems to work.

However, I'm unsure how to proceed to retain backwards compatibility with Julia < 1.9. I assume that indices.jl contains pieces basically carbon-copied from base/multidimensional.jl. I guess we could have a version guard in indices.jl, but that seems inelegant somehow.