diff --git a/.gitignore b/.gitignore
index c99f2ce..28a6a59 100644
--- a/.gitignore
+++ b/.gitignore
@@ -31,3 +31,17 @@ vendor/
 
 # Reference projects (not part of Five source)
 ref/
+
+# Ad-hoc test scratch at repo root.
+# Existing tracked DBF fixtures (area_a.dbf, customers.dbf, idxadv.dbf, ...)
+# remain tracked. These patterns keep new scratch tables out of the index
+# when tests are accidentally run from the repo directory.
+/t.dbf
+/b.dbf
+/s.dbf
+/p.dbf
+# Macro-unexpanded index filenames — signature of a FiveSql2 DDL bug where
+# `Lower(cTable) + "_pk.ntx"` ends up as a literal filename. Keep the
+# garbage out of commits; file a real bug to fix the DDL path.
+Lower*.ntx
+Lower*.cdx