Package: coreutils Version: 9.1-1 Version: 9.4-3 Severity: normal Dear Maintainer,
Please document how numfmt determines the output precision.
I was about to report that
$ numfmt --to-unit 10 1
1
$ numfmt --to-unit 10 3
1
$ numfmt --to-unit 3 10
4
but guessed that maybe
$ numfmt --to-unit 10 1.0
0.1
$ numfmt --to-unit 3 10.0
3.4
$ numfmt --to-unit 3 10.000
3.334
$ numfmt --to-unit 3 10.000000
3.333334
which holds.
This is surprising at best, and after a few keywords
I hit on this being mentioned in the manual as
FORMAT must be suitable for printing one floating-point argument '%f'.
Optional quote (%'f) will enable --grouping (if supported by current lo‐
cale). Optional width value (%10f) will pad output. Optional zero
(%010f) width will zero pad the number. Optional negative values (%-10f)
will left align. Optional precision (%.1f) will override the input de‐
termined precision.
which doesn't actually say how it's determined,
and is tucked into the end of a nauseating paragraph about something unrelated.
Notably, this is not how anything else behaves, either, AFAICT
(per seq precedent you'd expect the full but minimal precision for the output).
Best,
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