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Add rustdoc comment.

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Owen Anderson 2022-07-20 23:32:50 -07:00
parent 13762cae05
commit 417ad0e384
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7
src/uu/wc/src/count_fast.rs
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@ -135,6 +135,13 @@ pub(crate) fn count_bytes_and_lines_fast<R: Read>(
}
}
/// Returns a WordCount that counts the number of Unicode characters encoded in UTF-8 read via a Reader.
///
/// This corresponds to the `-m` command line flag to wc.
///
/// # Arguments
///
/// * `R` - A Reader from which the UTF-8 stream will be read.
pub(crate) fn count_chars_fast<R: Read>(handle: &mut R) -> (WordCount, Option<io::Error>) {
/// Mask of the value bits of a continuation byte
const CONT_MASK: u8 = 0b0011_1111u8;