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allow redirecting standard streams to IOContext #36688

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merged 1 commit into from
Jul 16, 2020
Merged

allow redirecting standard streams to IOContext #36688

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1 change: 1 addition & 0 deletions NEWS.md
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Original file line number Diff line number Diff line change
Expand Up @@ -53,6 +53,7 @@ New library functions
New library features
--------------------

* The `redirect_*` functions can now be called on `IOContext` objects.

Standard library changes
------------------------
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6 changes: 6 additions & 0 deletions base/stream.jl
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Expand Up @@ -1166,6 +1166,12 @@ for (x, writable, unix_fd, c_symbol) in
$x = devnull
return devnull
end
function ($f)(io::IOContext)
io2, _dict = unwrapcontext(io)
($f)(io2)
global $x = io
return io
end
end
end

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5 changes: 5 additions & 0 deletions test/spawn.jl
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Expand Up @@ -252,6 +252,11 @@ end
@test "Hello World\n" == read(fname, String)
@test OLD_STDOUT === stdout
rm(fname)

col = get(stdout, :color, false)
redirect_stdout(IOContext(stdout, :color=>!col))
@test get(stdout, :color, col) == !col
redirect_stdout(OLD_STDOUT)
end
end

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