From 94b1be8610d273ea1d4df030b70d44c2f4bd8338 Mon Sep 17 00:00:00 2001
From: AzamatB <aberdysh@gmail.com>
Date: Wed, 9 Jan 2019 15:53:04 -0500
Subject: [PATCH 1/4] add method to broadcastable for Enum

---
 base/broadcast.jl | 1 +
 1 file changed, 1 insertion(+)

diff --git a/base/broadcast.jl b/base/broadcast.jl
index 194bbd489a515..024f1c77e8a77 100644
--- a/base/broadcast.jl
+++ b/base/broadcast.jl
@@ -606,6 +606,7 @@ Base.RefValue{String}("hello")
 ```
 """
 broadcastable(x::Union{Symbol,AbstractString,Function,UndefInitializer,Nothing,RoundingMode,Missing,Val}) = Ref(x)
+broadcastable(x::Enum) = Ref(x)
 broadcastable(x::Ptr) = Ref(x)
 broadcastable(::Type{T}) where {T} = Ref{Type{T}}(T)
 broadcastable(x::Union{AbstractArray,Number,Ref,Tuple,Broadcasted}) = x

From 2d88f3b535ab9931a64d409cd706dc8be5b8f2c4 Mon Sep 17 00:00:00 2001
From: AzamatB <aberdysh@gmail.com>
Date: Wed, 9 Jan 2019 16:57:11 -0500
Subject: [PATCH 2/4] Enums are scalars in broadcasting

---
 NEWS.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/NEWS.md b/NEWS.md
index 685572a3fa480..cd0799ca681b8 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -16,6 +16,7 @@ Multi-threading changes
 Language changes
 ----------------
 
+* `Enum` now behaves like a scalar when used in broadcasting ([#30670]).
 
 Command-line option changes
 ---------------------------

From 31d3b061687450d73af2474ff56cb61082f7c5fe Mon Sep 17 00:00:00 2001
From: AzamatB <aberdysh@gmail.com>
Date: Wed, 9 Jan 2019 17:27:44 -0500
Subject: [PATCH 3/4] tests for scalar behavior in broadcast

---
 test/enums.jl | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/test/enums.jl b/test/enums.jl
index 71507487ac93f..81b789b899030 100644
--- a/test/enums.jl
+++ b/test/enums.jl
@@ -163,3 +163,6 @@ end
     haggis       = 4
 end
 @test Int(haggis) == 4
+
+# test scalar behavior in broadcast
+@test (@enum Fruit apple; v = Vector{Fruit}(undef, 3); v .= apple; v) == [apple, apple, apple]

From fabd74f4e178aabddeaf83e7d0757069dfea33d7 Mon Sep 17 00:00:00 2001
From: AzamatB <aberdysh@gmail.com>
Date: Wed, 9 Jan 2019 21:15:44 -0500
Subject: [PATCH 4/4] Update Enums.jl

---
 base/Enums.jl | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/base/Enums.jl b/base/Enums.jl
index 87f99e7114789..dfafd0e9c8912 100644
--- a/base/Enums.jl
+++ b/base/Enums.jl
@@ -26,6 +26,9 @@ function membershiptest(expr, values)
     end
 end
 
+# give Enum types scalar behavior in broadcasting
+broadcastable(x::Enum) = Ref(x)
+
 @noinline enum_argument_error(typename, x) = throw(ArgumentError(string("invalid value for Enum $(typename): $x")))
 
 """