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Takes a long time to insert longer input #39

kindermannhubert opened this issue Dec 16, 2021 · 2 comments

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Should be instant.

@kindermannhubert
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The problem is in KeyPress.ReadRemainingKeys which is simply

do
{
    keys.Add(console.ReadKey(true));
} while (console.KeyAvailable);

@waf any idea how to make this faster? There's no 'bulk' read on Console.

@waf
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waf commented Dec 19, 2021

Yeah, this was a bit of struggle. The current approach results in "somewhat tolerable" performance (it can handle ~3000 characters in about a second), but it isn't really ideal.

I outlined some of my thinking at the bottom of Architecture.md. There isn't a great solution. ANSI sequences handle this with "Bracketed Paste" which is supported by Windows Terminal, but switching to ANSI input sequences has its own tradeoffs (lack of maturity in C# libraries and other issues as described in the Architecture.md file).

I'm sort of waiting to see what happens with dotnet/runtime#52374 before rearchitecting anything.

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