Avoid potential ambiguities for [h/v/hv]cat in packages (#41511)

Author: dkarrasch

stdlib/LinearAlgebra/src/uniformscaling.jl

@@ -404,9 +404,11 @@ promote_to_arrays(n,k, ::Type{T}, A, B, Cs...) where {T} =
     (promote_to_arrays_(n[k], T, A), promote_to_arrays_(n[k+1], T, B), promote_to_arrays(n,k+2, T, Cs...)...)
 promote_to_array_type(A::Tuple{Vararg{Union{AbstractVecOrMat,UniformScaling,Number}}}) = Matrix
 
-for (f,dim,name) in ((:hcat,1,"rows"), (:vcat,2,"cols"))
+for (f, _f, dim, name) in ((:hcat, :_hcat, 1, "rows"), (:vcat, :_vcat, 2, "cols"))
     @eval begin
-        function $f(A::Union{AbstractVecOrMat,UniformScaling,Number}...)
+        @inline $f(A::Union{AbstractVecOrMat,UniformScaling}...) = $_f(A...)
+        @inline $f(A::Union{AbstractVecOrMat,UniformScaling,Number}...) = $_f(A...)
+        function $_f(A::Union{AbstractVecOrMat,UniformScaling,Number}...)
             n = -1
             for a in A
                 if !isa(a, UniformScaling)
@@ -424,8 +426,9 @@ for (f,dim,name) in ((:hcat,1,"rows"), (:vcat,2,"cols"))
     end
 end
 
-
-function hvcat(rows::Tuple{Vararg{Int}}, A::Union{AbstractVecOrMat,UniformScaling,Number}...)
+hvcat(rows::Tuple{Vararg{Int}}, A::Union{AbstractVecOrMat,UniformScaling}...) = _hvcat(rows, A...)
+hvcat(rows::Tuple{Vararg{Int}}, A::Union{AbstractVecOrMat,UniformScaling,Number}...) = _hvcat(rows, A...)
+function _hvcat(rows::Tuple{Vararg{Int}}, A::Union{AbstractVecOrMat,UniformScaling,Number}...)
     require_one_based_indexing(A...)
     nr = length(rows)
     sum(rows) == length(A) || throw(ArgumentError("mismatch between row sizes and number of arguments"))