show adjoint vectors not as matrices

Author: mcabbott

stdlib/LinearAlgebra/src/adjtrans.jl

@@ -181,6 +181,16 @@ function Base.showarg(io::IO, v::Transpose, toplevel)
     toplevel && print(io, " with eltype ", eltype(v))
     return nothing
 end
+function Base.show(io::IO, v::Adjoint{<:Real, <:AbstractVector})
+    print(io, "adjoint(")
+    show(io, parent(v))
+    print(io, ")")
+end
+function Base.show(io::IO, v::Transpose{<:Number, <:AbstractVector})
+    print(io, "transpose(")
+    show(io, parent(v))
+    print(io, ")")
+end
 
 # some aliases for internal convenience use
 const AdjOrTrans{T,S} = Union{Adjoint{T,S},Transpose{T,S}} where {T,S}

stdlib/LinearAlgebra/test/adjtrans.jl

@@ -502,6 +502,11 @@ end
     @test String(take!(io)) == "transpose(::Matrix{Float64})"
 end
 
+@testset "show" begin
+    @test repr(adjoint([1,2,3])) == "adjoint([1, 2, 3])"
+    @test repr(transpose([1f0,2f0])) == "transpose(Float32[1.0, 2.0])"
+end
+
 @testset "strided transposes" begin
     for t in (Adjoint, Transpose)
         @test strides(t(rand(3))) == (3, 1)