From dad3d8404098689d014ed51bc6f403193dbc7e02 Mon Sep 17 00:00:00 2001
From: Rob Jonson <rob@hobbyistsoftware.com>
Date: Fri, 30 Jul 2021 17:09:37 +0100
Subject: [PATCH] don't implement hidden(false) for swift < 5

and provide a warning
---
 Sources/Path+ls.swift                | 7 +++++--
 Tests/PathTests/PathTests+ls().swift | 3 ++-
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/Sources/Path+ls.swift b/Sources/Path+ls.swift
index c97397e..0b627a3 100644
--- a/Sources/Path+ls.swift
+++ b/Sources/Path+ls.swift
@@ -53,12 +53,12 @@ extension Path.Finder: Sequence, IteratorProtocol {
             if enumerator.level < depth.lowerBound {
                 continue
             }
-          #endif
-
+          
             if !hidden, path.basename().hasPrefix(".") {
                 enumerator.skipDescendants()
                 continue
             }
+          #endif
             if let type = path.type, !types.contains(type) { continue }
             if let exts = extensions, !exts.contains(path.extension) { continue }
             return path
@@ -124,6 +124,9 @@ public extension Path.Finder {
     
     /// Whether to skip hidden files and folders.
     func hidden(_ hidden: Bool) -> Path.Finder {
+        #if os(Linux) && !swift(>=5.0)
+          fputs("warning: hidden not implemented for Swift < 5\n", stderr)
+        #endif
         self.hidden = hidden
         return self
     }
diff --git a/Tests/PathTests/PathTests+ls().swift b/Tests/PathTests/PathTests+ls().swift
index 1c856e7..58072d3 100644
--- a/Tests/PathTests/PathTests+ls().swift
+++ b/Tests/PathTests/PathTests+ls().swift
@@ -149,11 +149,12 @@ extension PathTests {
                 Set([dotFoo,tmpDotA,tmpDotAFoo,tmpB,tmpBFoo]),
                 relativeTo: tmpdir)
             
+            #if !os(Linux) || swift(>=5)
             XCTAssertEqual(
                 Set(tmpdir.find().hidden(false)),
                 Set([tmpB,tmpBFoo]),
                 relativeTo: tmpdir)
-                    
+            #endif
         }
     }