Fix BroadcastLayout{typeof(-)} ambiguity (#108)

* Fix ambiguity with BroadcastLayout{typeof(-)}

* fix test

Author: dlfivefifty

Project.toml

@@ -1,6 +1,6 @@
 name = "ContinuumArrays"
 uuid = "7ae1f121-cc2c-504b-ac30-9b923412ae5c"
-version = "0.8.4"
+version = "0.8.5"
 
 [deps]
 ArrayLayouts = "4c555306-a7a7-4459-81d9-ec55ddd5c99a"

src/bases/bases.jl

@@ -59,8 +59,10 @@ end
 @inline copy(L::Ldiv{<:AbstractBasisLayout,BroadcastLayout{typeof(+)}}) = +(broadcast(\,Ref(L.A),arguments(L.B))...)
 @inline copy(L::Ldiv{<:AbstractBasisLayout,BroadcastLayout{typeof(+)},<:Any,<:AbstractQuasiVector}) = 
     transform_ldiv(L.A, L.B)
-@inline copy(L::Ldiv{Lay,BroadcastLayout{typeof(+)},<:Any,<:AbstractQuasiVector}) where Lay<:MappedBasisLayouts =
+for op in (:+, :-)
+    @eval @inline copy(L::Ldiv{Lay,BroadcastLayout{typeof($op)},<:Any,<:AbstractQuasiVector}) where Lay<:MappedBasisLayouts =
         copy(Ldiv{Lay,LazyLayout}(L.A,L.B))
+end
 
 @inline function copy(L::Ldiv{<:AbstractBasisLayout,BroadcastLayout{typeof(-)}})
     a,b = arguments(L.B)

test/runtests.jl

@@ -450,6 +450,7 @@ end
 
         @testset "Mapped and BroadcastLayout{typeof(+)}" begin
             @test L[y,:] \ (y .+ y) ≈ L[y,:] \ (2y)
+            @test L[y,:] \ (y .- y) ≈ zeros(10)
         end
     end