Add `config_file` function.

* gd_diff.py (config_file): New function.
* tests/test_gd_diff.py (test_config_file): Test function for
`config_file` function.

1 files changed, 4 insertions, 0 deletions

diff --git a/gd_diff.py b/gd_diff.py
index 8bb9bf5..ef0c070 100644
--- a/gd_diff.py
+++ b/gd_diff.py
@@ -213,3 +213,7 @@ def slurp_fields_from_readme(content):
 
 def config_dir():
     return os.path.join(os.getenv('HOME'), '.config', 'gns-deb-diff')
+
+
+def config_file():
+    return os.path.join(config_dir(), 'config')