bug-bash
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: redirecting a file descriptor to an array variable? Possible? How? R


From: Linda Walsh
Subject: Re: redirecting a file descriptor to an array variable? Possible? How? RFE?
Date: Wed, 18 Nov 2015 12:29:15 -0800
User-agent: Thunderbird



Greg Wooledge wrote:
On Wed, Nov 18, 2015 at 10:46:57AM -0800, Linda Walsh wrote:
        One thing that seems to be another problem.  Greg called
my attention to another printf format bug:

%q causes printf to output the corresponding argument in a
                    format that can be reused as shell input.

        Which it doesn't when nuls are involved.

An argument cannot contain a NUL byte.  So it's moot.
---
        As in:
printf '"%c"\n'  $'\x00'|hexdump -C
00000000  22 00 22 0a                                       |".".|

I see 2 arguments being passed to printf. That puts the NUL byte between 2 double quotes and terminates the line w/a newline.

        What I'm pointing out is that a NUL byte can be used
and processed as an argument in some cases.  The fact that it doesn't work
in most places, I will agree, is a short-coming.  However one cannot
categorically say that a NUL byte can't be used as an argument.  Solving
other places where it doesn't work might make it so that it *would* work...

Maybe a "-b" (binary) option could be added to 'declare'?




reply via email to

[Prev in Thread] Current Thread [Next in Thread]