Use ReshapedArray for show() (#329)

Author: kescobo

src/display.jl

@@ -19,9 +19,9 @@ function Base.show(io::IO, ::MIME"image/svg+xml", c::Color)
         """)
 end
 
-function Base.show(io::IO, ::MIME"image/svg+xml", 
+function Base.show(io::IO, ::MIME"image/svg+xml",
                    cs::AbstractVector{T}) where T <: Color
-    show(io, MIME"image/svg+xml"(), reshape(cs, (1, length(cs))))
+    show(io, MIME"image/svg+xml"(), Base.ReshapedArray(cs, (1, length(cs)), ()))
 end
 
 function Base.show(io::IO, ::MIME"image/svg+xml",

test/colormaps.jl

@@ -1,3 +1,9 @@
 @testset "Colormaps" begin
     @test length(colormap("RdBu", 100)) == 100
+
+    # test ability to add to previously shown array of colors - issue #328
+    a = [colorant"white", colorant"red"]
+    show(stdout, MIME"image/svg+xml"(), a)
+    push!(a, colorant"blue")
+    @test length(a) == 3
 end