Handle \e[0;m sequence

[b-a-t]

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Describe the problem

gitlab-runner for whatever reason dumps its logs to the syslog with ANSI sequences, which is.. annoying. So, I was trying to sanitize those log lines in fluentd with the help of the sanitize method from the strings-ansi package but failed. It looks like the generated \e[0;m sequence is not handled properly by the regexp in the code.

Steps to reproduce the problem

  def list2string(values)
    values.map(&:chr).join('')
  end

  def test
    message = list2string([ 82, 117, 110, 116, 105, 109, 101, 32, 112, 108, 97, 116, 102, 111, 114, 109, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 27, 91, 48, 59, 109, 32, 32, 97, 114, 99, 104, 27, 91, 48, 59, 109, 61, 97, 109, 100, 54, 52, 32, 111, 115, 27, 91, 48, 59, 109, 61,
 108, 105, 110, 117, 120, 32, 112, 105, 100, 27, 91, 48, 59, 109, 61, 51, 55, 56, 48, 52, 32, 114, 101, 118, 105, 115, 105, 111, 110, 27, 91, 48, 59, 109, 61, 56, 49, 97, 98, 48, 55, 102, 5
4, 32, 118, 101, 114, 115, 105, 111, 110, 27, 91, 48, 59, 109, 61, 49, 54, 46, 49, 48, 46, 48 ])

    print(message)

    new_message = Strings::ANSI.sanitize(message)

    print(new_message)

    assert_equal('Runtime platform                                    arch=amd64 os=linux pid=37804 revision=81ab07f6 version=16.10.0', new_message)
  end

Actual behaviour

The sanitized string is still looks:

Runtime platform                                  \e[0;m  arch\e[0;m=amd64 os\e[0;m=linux pid\e[0;m=37804 revision\e[0;m=81ab07f6 version\e[0;m=16.10.0

Expected behaviour

The output should be:

Runtime platform                                    arch=amd64 os=linux pid=37804 revision=81ab07f6 version=16.10.0

Describe your environment

• OS version: Red Hat Enterprise Linux release 8.9 (Ootpa)
• Ruby version: 3.2.3
• Strings::ANSI version: 0.2.0