1 files changed, 5 insertions, 0 deletions
diff --git a/expr.h b/expr.h
index 5581bf4..0cd08ce 100644
--- a/expr.h
+++ b/expr.h
@@ -192,6 +192,11 @@ struct expr {
 
 	/** Optional string data for this expression. */
 	const char *sdata;
+
+	/** The number of files this expression keeps open between evaluations. */
+	int persistent_fds;
+	/** The number of files this expression opens during evaluation. */
+	int ephemeral_fds;
 };
 
 /** Singleton true expression instance. */