Fix --gitignore flag not working on relative subdir files

2 files changed, 22 insertions, 2 deletions

diff --git a/isort/files.py b/isort/files.py
index 692c2011..313d16b7 100644
--- a/isort/files.py
+++ b/isort/files.py
@@ -34,7 +34,7 @@ def find(
                 for filename in filenames:
                     filepath = os.path.join(dirpath, filename)
                     if config.is_supported_filetype(filepath):
-                        if config.is_skipped(Path(filepath)):
+                        if config.is_skipped(Path(os.path.abspath(filepath))):
                             skipped.append(filename)
                         else:
                             yield filepath
diff --git a/tests/unit/test_main.py b/tests/unit/test_main.py
index 86f62db3..581b3a56 100644
--- a/tests/unit/test_main.py
+++ b/tests/unit/test_main.py
@@ -1,4 +1,5 @@
 import json
+import os
 import subprocess
 from datetime import datetime
 from io import BytesIO, TextIOWrapper
@@ -352,7 +353,26 @@ import b
     assert "Skipped" not in out
     main.main([str(python_file), "--skip-gitignore", "--filter-files"])
     out, error = capsys.readouterr()
-    assert "Skipped" in out
+    assert "Skipped" in out and "has_imports.py" not in out
+
+    tmpdir.join(".gitignore").remove()
+
+    currentdir = os.getcwd()
+    os.chdir(tmpdir)
+
+    tmpdir.join(".gitignore").write("nested_dir/has_imports.py")
+    subpython_file = tmpdir.join("nested_dir/has_imports.py")
+    subpython_file.write(
+        """
+import b
+import a
+"""
+    )
+    main.main([".", "--skip-gitignore", "--filter-files"])
+    out, error = capsys.readouterr()
+    assert "nested_dir/has_imports.py" not in out
+
+    os.chdir(currentdir)
 
     # warnings should be displayed if old flags are used
     with pytest.warns(UserWarning):