In awk \n in regex means newline.

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https://bugs.launchpad.net/bugs/1641092

Title:
  Does not support patterns containing newline

Status in grep package in Ubuntu:
  New

Bug description:
  $ printf 'a
  b\0b' | grep --null-data "a
  b" |  hexdump -C
  00000000  61 0a 62 00 62 00                                 |a.b.b.|
  00000006

  expect
  00000000  61 0a 62

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: grep 2.25-1~16.04.1
  ProcVersionSignature: Ubuntu 4.4.0-45.66-generic 4.4.21
  Uname: Linux 4.4.0-45-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Fri Nov 11 12:58:27 2016
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2015-11-21 (355 days ago)
  InstallationMedia: Xubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  SourcePackage: grep
  UpgradeStatus: Upgraded to xenial on 2016-06-24 (139 days ago)

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