Add short display formats (Format::IECShort / Format::SIShort)#13
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Compact style matching bytesize's iec_short/si_short: no space, no
iB/B suffix ("11.8M", "215B"); output is sort -h compatible. Format
is now #[non_exhaustive]; adding variants is why this is 0.4.0.
Motivated by pitchfork's TUI, which hand-rolls this style in three
places.
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Formatis now#[non_exhaustive]and gained variants — technically breaking for exhaustive matches, hence 0.4.0 rather than 0.3.1. Long-format output is byte-for-byte unchanged (tests assert this).Documented footgun:
parse()interprets bareMas decimal, so short IEC output doesn't round-trip exactly — noted on the variant doc pointing users atFormat::IECfor values that get parsed back.