Re: Bugs in printf/sprintf formatted output

[Maciej W. Rozycki]

Hi Arnold,

> Thanks for the patches. I will review and apply and credit appropriately.

 Thank you.

> With respect to "nan" as input, the gawk manual is clear that "nan" and
> "inf" must be written as "+nan", "-nan", "+inf" or "-inf" to be
> recognized. Otherwise something like
> 
>       echo nancy | awk '{ print $1 + 1 }'
> 
> prints "nan" instead of 1.

 I have been aware of this peculiarity, as noted in my original report.  

 My suggestion would be making a separate test case (unless GAWK has one 
already, but your inclusion of the two inputs in `printf-corners.awk' 
suggests that it doesn't) that covers various inputs of "inf" and "nan" 
with and without a sign prepended, with and without the `+' and `space' 
flags, run both in the conventional (or GNU) and in the POSIX mode of 
GAWK, so that expectations for both modes are covered and things don't 
accidentally change in the future.  I guess I could have a look into it 
myself, but I can't commit to a specific timeline.

 NB I have learnt POSIX.1-2024 has been just released to IEEE members and 
the corresponding HTML version of The Open Group Base Specifications Issue 
8 will follow shortly (~July 21st was named).  I guess it will include the 
`B' and `b' conversions I mentioned before, both for C usage, obviously, 
and supposedly for AWK as well.

  Maciej