Fix io redirection for Julia 1.7, fixes #986. (#989)

Project.toml

@@ -1,6 +1,6 @@
 name = "IJulia"
 uuid = "7073ff75-c697-5162-941a-fcdaad2a7d2a"
-version = "1.23.1"
+version = "1.23.2"
 
 [deps]
 Base64 = "2a0f44e3-6c83-55bd-87e4-b1978d98bd5f"

src/stdio.jl

@@ -23,13 +23,15 @@ Base.displaysize(io::IJuliaStdio) = displaysize(io.io)
 Base.unwrapcontext(io::IJuliaStdio) = Base.unwrapcontext(io.io)
 Base.setup_stdio(io::IJuliaStdio, readable::Bool) = Base.setup_stdio(io.io.io, readable)
 
-for s in ("stdout", "stderr", "stdin")
-    f = Symbol("redirect_", s)
-    sq = QuoteNode(Symbol(s))
-    @eval function Base.$f(io::IJuliaStdio)
-        io[:jupyter_stream] != $s && throw(ArgumentError(string("expecting ", $s, " stream")))
-        Core.eval(Base, Expr(:(=), $sq, io))
-        return io
+if VERSION < v"1.7.0-DEV.254"
+    for s in ("stdout", "stderr", "stdin")
+        f = Symbol("redirect_", s)
+        sq = QuoteNode(Symbol(s))
+        @eval function Base.$f(io::IJuliaStdio)
+            io[:jupyter_stream] != $s && throw(ArgumentError(string("expecting ", $s, " stream")))
+            Core.eval(Base, Expr(:(=), $sq, io))
+            return io
+        end
     end
 end
 

test/stdio.jl

@@ -11,12 +11,14 @@ using IJulia
         flush(io)
         seek(io, 0)
         @test read(io, String) == "stdout\nprint\n"
-        @test_throws ArgumentError redirect_stdout(IJulia.IJuliaStdio(io, "stderr"))
-        @test_throws ArgumentError redirect_stdout(IJulia.IJuliaStdio(io, "stdin"))
-        @test_throws ArgumentError redirect_stderr(IJulia.IJuliaStdio(io, "stdout"))
-        @test_throws ArgumentError redirect_stderr(IJulia.IJuliaStdio(io, "stdin"))
-        @test_throws ArgumentError redirect_stdin(IJulia.IJuliaStdio(io, "stdout"))
-        @test_throws ArgumentError redirect_stdin(IJulia.IJuliaStdio(io, "stderr"))
+        if VERSION < v"1.7.0-DEV.254"
+            @test_throws ArgumentError redirect_stdout(IJulia.IJuliaStdio(io, "stderr"))
+            @test_throws ArgumentError redirect_stdout(IJulia.IJuliaStdio(io, "stdin"))
+            @test_throws ArgumentError redirect_stderr(IJulia.IJuliaStdio(io, "stdout"))
+            @test_throws ArgumentError redirect_stderr(IJulia.IJuliaStdio(io, "stdin"))
+            @test_throws ArgumentError redirect_stdin(IJulia.IJuliaStdio(io, "stdout"))
+            @test_throws ArgumentError redirect_stdin(IJulia.IJuliaStdio(io, "stderr"))
+        end
     end
 
     mktemp() do path, io