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Showing content from https://github.com/rust-lang/rust/issues/128405 below:

Tracking Issue for `bufreader_peek` · Issue #128405 · rust-lang/rust · GitHub

Feature gate: #![feature(bufreader_peek)]

This is a tracking issue for the BufReader::peek method.

// std::io

impl BufReader {
    fn peek(&mut self, n: usize) -> io::Result<&[u8]>
}

• ACP Accepted: ACP: BufReader::peek libs-team#417
• Implementation: implement BufReader::peek #128406
• Final comment period (FCP)¹
• Stabilization PR

• what should happen if n > capacity? options are: short slice, error, or panic.
• should the buffer be completely filled, or should it only read the number of bytes requested?

1. https://std-dev-guide.rust-lang.org/feature-lifecycle/stabilization.html ↩

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