Add tests

test/syntax.jl

@@ -2158,6 +2158,12 @@ end
 @test Meta.parse("a ⟂ b ⟂ c") == Expr(:comparison, :a, :⟂, :b, :⟂, :c)
 @test Meta.parse("a ⟂ b ∥ c") == Expr(:comparison, :a, :⟂, :b, :∥, :c)
 
+# issue 39350
+@testset "binary ⫪ and ⫫" begin
+    @test Meta.parse("a ⫪ b") == Expr(:call, :⫪, :a, :b)
+    @test Meta.parse("a ⫫ b") == Expr(:call, :⫫, :a, :b)
+end
+
 # only allow certain characters after interpolated vars (#25231)
 @test Meta.parse("\"\$x෴  \"",raise=false) == Expr(:error, "interpolated variable \$x ends with invalid character \"෴\"; use \"\$(x)\" instead.")
 @test Base.incomplete_tag(Meta.parse("\"\$foo", raise=false)) == :string