stdin/stdout/stderr and devnull

[stevengj]

Updated version of #498 to use @compat _redirect_* for JuliaLang/julia#25959.

[stevengj]

CI failure on Windows is unrelated download error.

[ararslan]

5 space indent?

[ararslan]

@mbauman suggested that we override Base._redirect_* here, which seems like it could be a cleaner solution.

[stevengj]

Updated to use _redirect_*, which should work for anything that doesn't explicitly mutate STDOUT (like IJulia does — it will just need a VERSION check).

I kept the change moving @compat to a separate file, since it still seems cleaner to separate this out, but the macro is unchanged.

[stevengj]

Usual unrelated download error on AppVeyor

[martinholters]

Any idea what's up here?

julia> VERSION
v"0.6.0"

julia> using Compat: stderr

julia> print(STDERR, "\r")

julia> print(stderr, "\r")

signal (11): Segmentation fault
while loading no file, in expression starting on line 0
uv_write2 at deps/srccache/libuv-52d72a52cc7ccd570929990f010ed16e2ec604c8/src/unix/stream.c:1389
uv_write at deps/srccache/libuv-52d72a52cc7ccd570929990f010ed16e2ec604c8/src/unix/stream.c:1475
jl_uv_write at src/jl_uv.c:414
uv_write at ./stream.jl:798
unsafe_write at ./stream.jl:832
print at ./strings/io.jl:122
unknown function (ip: 0x7f7c5b6e9556)
jl_call_fptr_internal at src/julia_internal.h:339 [inlined]
jl_call_method_internal at src/julia_internal.h:358 [inlined]
jl_apply_generic at src/gf.c:1933
do_call at src/interpreter.c:75

(Yea, I'll give 0.6.2 a try...)

[martinholters]

Confirmed on 0.6.2. Also note:

julia> using Compat: stderr

julia> stderr === STDERR
false

Should the assignment happen in __init()__?

[stevengj]

I guess so?

[stevengj]

Since this is an urgent bugfix, I pushed it directly: e39939a