equal matcher should handle \n

[bendycode]

This fails:

describe "equal"
  it 'handles \n character'
    string_with_new_line="x\ny"
    output='x
y'
    assert equal "$string_with_new_line" "$output"
end_describe

[hlangeveld]

According to the opengroup (POSIX) definition, the string "x\ny" should be four characters long, and not contain a newline character. This assertion should fail.