Handle filenames which has ":" (#9000)

* Fixes #8773 issue

* added test for #8773 issue

* skip test for windows

dvc/config_schema.py

@@ -51,6 +51,8 @@ def ByUrl(mapping):
         # Windows absolute paths should really have scheme == "" (local)
         if os.name == "nt" and len(parsed.scheme) == 1 and parsed.netloc == "":
             return schemas[""](data)
+        if parsed.netloc == "":
+            return schemas[""](data)
         if parsed.scheme not in schemas:
             raise Invalid(f"Unsupported URL type {parsed.scheme}://")
 

tests/func/test_add.py

@@ -342,6 +342,13 @@ def test_double_add_unchanged_dir(tmp_dir, dvc):
     assert ret == 0
 
 
+@pytest.mark.skipif(os.name == "nt", reason="unsupported on Windows")
+def test_add_colon_in_filename(tmp_dir, dvc):
+    tmp_dir.gen("fo:o", "foo")
+    ret = main(["add", "fo:o"])
+    assert ret == 0
+
+
 def test_should_update_state_entry_for_file_after_add(mocker, dvc, tmp_dir):
     file_md5_counter = mocker.spy(dvc_data.hashfile.hash, "file_md5")
     tmp_dir.gen("foo", "foo")