Print non-reals with parentheses

Author: MilesCranmer

src/utils.jl

@@ -84,7 +84,8 @@ Base.show(io::IO, d::AbstractDimensions) =
         s = replace(s, r"\s*$" => "")
         print(io, s)
     end
-Base.show(io::IO, q::AbstractQuantity) = print(io, ustrip(q), " ", dimension(q))
+Base.show(io::IO, q::AbstractQuantity{<:Real}) = print(io, ustrip(q), " ", dimension(q))
+Base.show(io::IO, q::AbstractQuantity) = print(io, "(", ustrip(q), ") ", dimension(q))
 
 function dimension_name(::AbstractDimensions, k::Symbol)
     default_dimensions = (length="m", mass="kg", time="s", current="A", temperature="K", luminosity="cd", amount="mol")

test/unittests.jl

@@ -123,6 +123,8 @@ using Test
         @test_throws DimensionError 1.0 - Quantity(one(T), D, length=1)
     end
 
+    @test string((0.5 + 0.5im)*u"km/s") == "(500.0 + 500.0im) m s⁻¹"
+
     x = Quantity(-1.2, length=2 // 5)
 
     @test abs(x) == Quantity(1.2, length=2 // 5)