Mark Compat.norm abd friends from #577 for deprecation

README.md

@@ -82,10 +82,6 @@ Currently, the `@compat` macro supports the following syntaxes:
 * `Compat.split` and `Compat.rsplit` accept `keepempty` keyword argument
   if `splitter` is given as second argument ([#26634])
 
-* `vecnorm` and `vecdot` are now `Compat.norm` and `Compat.dot`, respectively, while the
-  old `norm(A::AbstractMatrix, p=2)` is now `Compat.opnorm` ([#27401]).  `import Compat: ⋅`
-  to get `Compat.dot` as the binary operator `⋅`.
-
 * `atan2` is now a 2-argument method of `atan` ([#27253]).
 
 * `realmin` and `realmax` are now `floatmin` and `floatmax` ([#28302])

src/Compat.jl

@@ -53,6 +53,10 @@ import LibGit2
 import UUIDs
 using LinearAlgebra: qr
 using LinearAlgebra: rmul!
+const opnorm = LinearAlgebra.opnorm
+const norm = LinearAlgebra.norm
+const dot = LinearAlgebra.dot
+const ⋅ = dot
 
 
 include("compatmacro.jl")
@@ -78,17 +82,6 @@ end
     end
 end
 
-if !isdefined(LinearAlgebra, :opnorm) # julia#27401
-    opnorm(A::AbstractMatrix, p::Real=2) = LinearAlgebra.norm(A, p)
-    const norm = LinearAlgebra.vecnorm
-    const dot = LinearAlgebra.vecdot
-else
-    const opnorm = LinearAlgebra.opnorm
-    const norm = LinearAlgebra.norm
-    const dot = LinearAlgebra.dot
-end
-const ⋅ = dot
-
 if VERSION < v"0.7.0-DEV.2956" # julia#24839
     Base.permutedims(A::AbstractMatrix) = permutedims(A, (2,1))
     Base.permutedims(v::AbstractVector) = reshape(v, (1, length(v)))

test/old.jl

@@ -250,6 +250,14 @@ let A = [1 2; 3 4]
     @test Compat.rmul!(Diagonal(A), Diagonal([2, 1])) == Diagonal([8, 120])
 end
 
+# julia#27401
+import Compat: ⋅
+@test Compat.opnorm([1 2;3 4]) ≈ 5.464985704219043
+@test Compat.opnorm([1 2;3 4], 1) ≈ 6
+@test Compat.norm([1 2;3 4]) ≈ 5.477225575051661
+@test Compat.norm([1 2;3 4], 1) ≈ 10
+@test Compat.dot([1 2;3 4], [5 6;7 8]) == [1 2;3 4] ⋅ [5 6;7 8] ≈ 70
+
 
 # tests of removed functionality (i.e. justs tests Base)
 

test/runtests.jl

@@ -84,14 +84,6 @@ end
 @test permutedims([1 2; 3 4]) == [1 3; 2 4]
 @test permutedims([1,2,3]) == [1 2 3]
 
-# julia#27401
-import Compat: ⋅
-@test Compat.opnorm([1 2;3 4]) ≈ 5.464985704219043
-@test Compat.opnorm([1 2;3 4], 1) ≈ 6
-@test Compat.norm([1 2;3 4]) ≈ 5.477225575051661
-@test Compat.norm([1 2;3 4], 1) ≈ 10
-@test Compat.dot([1 2;3 4], [5 6;7 8]) == [1 2;3 4] ⋅ [5 6;7 8] ≈ 70
-
 # 0.7.0-alpha.44
 @test atan(1, 2) == atan(0.5)
 @test atan(1.0, 2.0) == atan(0.5)