1 files changed, 3 insertions, 1 deletions
diff --git a/crawl-ref/source/externs.h b/crawl-ref/source/externs.h
index 1498cdfe14..619295a303 100644
--- a/crawl-ref/source/externs.h
+++ b/crawl-ref/source/externs.h
@@ -1899,7 +1899,9 @@ public:
                throw (std::string);
 
 public:
-    std::string filename;  // The name of the file containing options.
+    std::string filename;     // The name of the file containing options.
+    std::string basefilename; // Base (pathless) file name
+    int         line_num;     // Current line number being processed.
 
     // View options
     std::vector<feature_override> feature_overrides;