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bug#20638: BUG: standard & extended RE's don't find NUL's :-(

From: Eric Blake
Subject: bug#20638: BUG: standard & extended RE's don't find NUL's :-(
Date: Sun, 24 May 2015 06:58:51 -0600
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0

On 05/23/2015 06:04 PM, L. A. Walsh wrote:
> the standard & extended RE's don't find find NUL's:

Because NULs imply binary data, and grepping binary data has unspecified
results per POSIX.  What's more, the NEWS for 2.21 documents that grep
is now taking the liberty of treating NUL as a line terminator when -a
is not in effect, thanks to the behavior being otherwise unspecified by

Try using 'grep -a' to force grep to treat the file as non-binary, in
spite of the NULs.

Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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