Preserve meaning of block boundaries
diff --git a/gen/src/mod.rs b/gen/src/mod.rs
index a4a159d..8626058 100644
--- a/gen/src/mod.rs
+++ b/gen/src/mod.rs
@@ -2,6 +2,7 @@
 // the cxxbridge CLI command.
 
 mod alphasort;
+mod block;
 mod builtin;
 mod check;
 pub(super) mod error;