Krikri::PluginHelpers::ArchivePaths
ArchivePaths - pure logic for the archive plugin's arcroot
calculation. No I/O here - the plugin itself resolves which paths
actually exist.
Class methods
dirname(commonprefix([dirname(p) + "/" for p in paths])) + "/" -
matches real Ansible's (community.general) archive module's
common_path() exactly, verified against real ansible-playbook's
actual arcroot output for single-file, single-directory, and
multi-path cases.
Python's os.path.dirname strips only the trailing slash from a path already ending in "/" (returning everything before it), unlike Crystal's File.dirname, which treats a trailing slash as insignificant and returns the level ABOVE it - a real, verified divergence that broke arcroot calculation until caught by comparing actual output against real ansible-playbook.