Entry.files defaults to all files

Sources/Path+ls.swift

@@ -51,7 +51,14 @@ public extension Array where Element == Entry {
         }
     }
 
-    /// Filters the list of entries to be a list of Paths that are files with the specified extension
+    /// Filters the list of entries to be a list of Paths that are files.
+    var files: [Path] {
+        return compactMap {
+            $0.kind == .file ? $0.path : nil
+        }
+    }
+
+    /// Filters the list of entries to be a list of Paths that are files with the specified extension.
     func files(withExtension ext: String) -> [Path] {
         return compactMap {
             $0.kind == .file && $0.path.extension == ext ? $0.path : nil

Sources/Path.swift

@@ -73,10 +73,15 @@ public struct Path: Equatable, Hashable, Comparable {
     /**
      Returns the filename extension of this path.
      - Remark: Implemented via `NSString.pathExtension`.
+     - Note: We special case eg. `foo.tar.gz`.
      */
     @inlinable
     public var `extension`: String {
-        return (string as NSString).pathExtension
+        if string.hasSuffix(".tar.gz") {
+            return "tar.gz"
+        } else {
+            return (string as NSString).pathExtension
+        }
     }
 
 //MARK: Pathing