`quick_xml::de::from_reader` requires a `BufRead` instead of just an `std::io::Read` about quick-xml

[Mingun]

Yes, if you look at the code, parsing uses BufRead::fill_buf. Because quick-xml returns tokens with contents of tags it should somewhere store content until the full tag will be recognized. If the first read returns <ab we need to wait while c> would be read so we can recognize the <abc> tag.

Instead of doing buffering itself quick-xml only requires bufferisation support from source which is what the idea of traits. If you think, that this is unnecessary limitation (maybe it is!) please make a PR!

[phdavis1027]

Upon thinking about it, this might be best. For any text-based serialization format like UTF-8 buffering probably is more efficient. That said, it's not inconceivable others might have weird usescases like mine where they might not want to be tied to BufRead. I am currently not at a place in my project where I feel able to invest in that PR, but I might revisit it over the summer when I might have more time on my hands.