Function normalize_path 

pub(crate) fn normalize_path(
    path: &Path,
    path_type: PathType,
) -> Option<PathBuf>

Normalizes a path without performing any filesystem operations.

Returns Some absolute path for absolute input paths. Returns None for relative input paths.

Notes

• All redundant separator (e.g. /) and parent directory components (i.e. ..) are normalized.
• Any current directory components (i.e. .) are ignored.
• This function does not resolve links.