Re: Regression -- can't read input w/stderr redirect

[L A Walsh]

Chet Ramey wrote:
> On 6/18/17 6:59 PM, L A Walsh wrote:
>   
> > Chet Ramey wrote:
> >     
> > > Bash has always stripped NULL bytes. Now it tells you it's doing it.
> > >       
> > Why?  Did I toggle a flag asking for the warning?  Seems like it
> > was sorta sprung on users w/no way to disable it.
> >     
>
> Users asked why bash transformed input without warning, even though it
> had been doing that it's entire lifetime. A warning is appropriate.
>   
Maybe - but links to, at least, 2-3 users who filed bug reports about this
problem in bug-bash would be appropriate as well to justify the inclusion
of the text.

I don't recall it ever coming up until the warning message was discussed 
as being unwelcome.  So please, I'd like to see the bug-report filings 
where this
happened.


> > ----
> >    But things are changing -- people have asked for zero-terminated read's
> > and readarrays.  More unix utils are offering NUL termination as an option
> > because newlines alone don't cut it in some instances.
> >     
>
> And bash provides mechanisms to deal with the relatively few use cases
> where it is a problem.
>
> Recall that the only thing that has changed is that bash now provides a
> warning about what it's doing.
>   
Oh?  I want to read in a value from the registry where something may 
have zeros
after the data.  Please tell me the mechanism to read this in w/no warnings
that won't silence more serious cases of zero's other than at the end of 
line.

I want to see the hyperlinks to archived bug-discussions on bug-bash where
users complained about this and where it was at the end of a string where
they expected to be able to read past a binary-0 in the input.

I know I would have like the ability to read binary data into to a var that
might "include a NUL", but I don't recall ever complaining about 
end-of-string
NUL's being trimmed -- and it was drummed home to me how the null's were the
end of the string -- not how bash read everything but nulls from input.