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Seemingly redundant flush operation in ansicolor_sink #3061

Answered by tt4g
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I did not implement ansicolor_sink, but I found the maintainer's comment: #2321 (comment)

The stdout/stderr sinks flush on each log regardless of the flush level. This is by design since normally users expect to see the screen output immediately, and also due to the fact that under windows the WriteConsoleA() flush directly to the console anyway.

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