Fix display bug of abstract type EnumX.Enum.

Project.toml

@@ -1,6 +1,6 @@
 name = "EnumX"
 uuid = "4e289a0a-7415-4d19-859d-a7e5c4648b56"
-version = "1.0.0"
+version = "1.0.1"
 
 [compat]
 julia = "1.6"

src/EnumX.jl

@@ -138,7 +138,11 @@ function Base.show(io::IO, ::MIME"text/plain", x::E) where E <: Enum
     write(io, seekstart(iob))
     return nothing
 end
-function Base.show(io::IO, ::MIME"text/plain", ::Base.Type{E}) where E <: Enum
+function Base.show(io::IO, ::MIME"text/plain", ::Type{E}) where E <: Enum
+    if !isconcretetype(E) # handle EnumX.Enum and EnumX.Enum{T}
+        invoke(show, Tuple{IO, Type}, io, E)
+        return
+    end
     iob = IOBuffer()
     insts = Base.Enums.instances(E)
     n = length(insts)

test/runtests.jl

@@ -71,6 +71,12 @@ let io = IOBuffer()
     show(io, "text/plain", Fruit.Banana)
     str = String(take!(io))
     @test str == "Fruit.Banana = 1"
+    show(io, "text/plain", EnumX.Enum)
+    str = String(take!(io))
+    @test str == "EnumX.Enum"
+    show(io, "text/plain", EnumX.Enum{Int32})
+    str = String(take!(io))
+    @test str == "EnumX.Enum{Int32}"
 end