From dbc316c13665d352f203001d94d320b5b8db8e60 Mon Sep 17 00:00:00 2001
From: Tim Holy <tim.holy@gmail.com>
Date: Wed, 15 Mar 2017 13:51:25 -0500
Subject: [PATCH] Support conversion of AbstractInterval{<:Integer} to
 AbstractUnitRange

---
 src/IntervalSets.jl | 3 +++
 test/runtests.jl    | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/src/IntervalSets.jl b/src/IntervalSets.jl
index 551db96..ee7f202 100644
--- a/src/IntervalSets.jl
+++ b/src/IntervalSets.jl
@@ -27,6 +27,9 @@ function convert{I<:AbstractInterval}(::Type{I}, r::Range)
     T = eltype(I)
     I(convert(T, minimum(r)), convert(T, maximum(r)))
 end
+function convert{R<:AbstractUnitRange,I<:Integer}(::Type{R}, i::AbstractInterval{I})
+    R(minimum(i), maximum(i))
+end
 
 ordered{T}(a::T, b::T) = ifelse(a < b, (a, b), (b, a))
 ordered(a, b) = ordered(promote(a, b)...)
diff --git a/test/runtests.jl b/test/runtests.jl
index 49f6ef6..7a822fa 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -10,6 +10,8 @@ using Base.Test
         @test_throws ArgumentError :a .. "b"
         I = 0..3
         @test string(I) == "0..3"
+        @test convert(UnitRange, I) === 0:3
+        @test convert(UnitRange{Int16}, I) === Int16(0):Int16(3)
         J = 3..2
         K = 5..4
         L = 3 ± 2