[Bug 778679] Re: _available_interfaces fails without gawk installed

[Daniel Black]

checked upstream and all awk uses with character classes has been removed:
http://anonscm.debian.org/gitweb/?p=bash-completion/bash-completion.git;a=blob_plain;f=bash_completion;hb=HEAD

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https://bugs.launchpad.net/bugs/778679

Title:
  _available_interfaces fails without gawk installed

Status in “bash-completion” package in Ubuntu:
  New

Bug description:
  Binary package hint: bash-completion

  Ubuntu 10.04.2 LTS
  bash-completion 1:1.1-3ubuntu2
  mawk 1.3.3-15ubuntu2

  bash-completion uses '[:space:]' syntax for character class, which is
  supported by gawk, but not mawk, which Ubuntu uses to provide awk by
  default.

  Test:
  bash-4.1$ _available_interfaces; echo ${COMPREPLY[*]}

  Expected:
  eth0 lo

  Got:
  <nothing>

  Fix by requiring gawk, or changing line 517 of /etc/bash_completion to
  use '[^ ^I^M]' to match non-whitespace characters.

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