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IOContext not properly set for stdout, disables ANSI colors #2823

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danielwe opened this issue Feb 21, 2024 · 0 comments · May be fixed by #2824
Open

IOContext not properly set for stdout, disables ANSI colors #2823

danielwe opened this issue Feb 21, 2024 · 0 comments · May be fixed by #2824

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@danielwe
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Since #2148 the stdout capture window supports ANSI terminal colors, and :color => true is set in default_stdout_iocontext as seen here:

Pluto.jl/src/runner/PlutoRunner/src/PlutoRunner.jl

Lines 1007 to 1012 in 216451c

const default_stdout_iocontext = IOContext(devnull,
:color => true,
:limit => true,
:displaysize => (18, 75),
:is_pluto => false,
)

However, when querying stdout in a Pluto cell, :color is set to false, so well-behaved Julia code will not print colors. MWE: printstyled("hello"; color=:red). A workaround is to wrap stdout in your own IOContext and set :color => true, but this should not be necessary.

image
(Please take this screenshot in place of a video. Nothing dynamic here.)

Notebook file: https://gist.github.com/danielwe/0663e49fbfb2219b2230d3fe2092c097

Using Pluto 0.19.39 on Julia 1.10.1
@danielwe danielwe linked a pull request Feb 22, 2024 that will close this issue
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Set IOContext for redirected stdout/stderr danielwe/Pluto.jl
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@danielwe