- SOURCE_ID_CFA, FETCH_CFA, SWAP_CFA, # Store current source on stack
- SOURCE_ID_CFA, STORE_CFA, # Mark this as the current source
- SOURCE_ID_CFA, FETCH_CFA, QUERY_FILE_CFA, # Read line from file
+ SOURCE_ID_VAR_CFA, FETCH_CFA, SWAP_CFA, # Store current source on stack
+ SOURCE_ID_VAR_CFA, STORE_CFA, # Mark this as the current source
+ SOURCE_ID_VAR_CFA, FETCH_CFA, QUERY_FILE_CFA, # Read line from file
+ EOF_FLAG_CFA, FETCH_CFA,