bug#7877: sleep takes undocumented hex args

[Jim Meyering]

Pádraig Brady wrote:
> On 21/01/11 09:24, Jim Meyering wrote:
>> +    return false;
>> +  return ISDIGIT (*p) || *p == '.';
>> +}
>
> looks good. Perhaps rename to c_strtod_pre_filter()
> as I initially wondered why you hardcoded '.'

Good idea.  Done.  Thanks for the quick review.