"Ulrich Hermisson" <[EMAIL PROTECTED]> wrote:
> Hello,
>
> the following behaviour of "sort -nu" needs not necessarily be considered a
> bug:
>
> $ echo ",2,0,1,-2,3,-4" | tr "," "\n" | sort -nu
> -4
> -2
>
> 1
> 2
> 3
Thanks for the report.
POSIX requires sort, with -n or `-kM,Nn', to interpret an empty field as 0.
The documentation (info sort) already says that an empty field is valid
but doesn't specify how it's interpreted.
I've just added a sentence saying that.
Here's the new description:
`--numeric-sort'
Sort numerically: the number begins each line; specifically, it
consists of optional blanks, an optional `-' sign, and zero or more
digits possibly separated by thousands separators, optionally
followed by a decimal-point character and zero or more digits. A
string of zero digits is interpreted as `0'. The `LC_NUMERIC'
locale specifies the decimal-point character and thousands
separator.
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