files: reduce duplication in display of file entries Avoid special casing of the 'parent directory' link (..) by extracting some logic to a helper function. This avoids duplication. A subsequent commit will make changes to this logic and by introducing this helper function we only need to change in one place.

[tox]
minversion = 1.8
envlist = py{26,27}-pytest

[testenv]
setenv =
    PYTHONHASHSEED = 0
deps =
    -r{toxinidir}/dev_requirements.txt
    py26-pytest: unittest2
    python-ldap
    python-pam
commands =
    pytest: py.test {posargs}