diff --git a/src/structs.h b/src/structs.h
index 5b1a5cc..a507a37 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -1850,13 +1850,19 @@
 #define IMP_FLAGS_AUTOLOAD	4   // script still needs to be loaded
 
 /*
- * Info about an already sourced scripts.
+ * Info about an encoutered script.
+ * When sn_state has the SN_STATE_NOT_LOADED is has not been sourced yet.
  */
 typedef struct
 {
     char_u	*sn_name;	    // full path of script file
     int		sn_script_seq;	    // latest sctx_T sc_seq value
 
+    // When non-zero the script ID of the actually sourced script.  Used if a
+    // script is used by a name which has a symlink, we list both names, but
+    // only the linked-to script is actually sourced.
+    int		sn_sourced_sid;
+
     // "sn_vars" stores the s: variables currently valid.  When leaving a block
     // variables local to that block are removed.
     scriptvar_T	*sn_vars;