updated for version 7.3.603
Problem: It is possible to add replace builtin functions by calling
extend() on g:.
Solution: Add a flag to a dict to indicate it is a scope. Check for
existing functions. (ZyX)
diff --git a/src/structs.h b/src/structs.h
index abcb704..36440c3 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -1106,6 +1106,11 @@
#define VAR_DICT 5 /* "v_dict" is used */
#define VAR_FLOAT 6 /* "v_float" is used */
+/* Values for "dv_scope". */
+#define VAR_SCOPE 1 /* a:, v:, s:, etc. scope dictionaries */
+#define VAR_DEF_SCOPE 2 /* l:, g: scope dictionaries: here funcrefs are not
+ allowed to mask existing functions */
+
/* Values for "v_lock". */
#define VAR_LOCKED 1 /* locked with lock(), can use unlock() */
#define VAR_FIXED 2 /* locked forever */
@@ -1181,6 +1186,7 @@
int dv_copyID; /* ID used by deepcopy() */
dict_T *dv_copydict; /* copied dict used by deepcopy() */
char dv_lock; /* zero, VAR_LOCKED, VAR_FIXED */
+ char dv_scope; /* zero, VAR_SCOPE, VAR_DEF_SCOPE */
dict_T *dv_used_next; /* next dict in used dicts list */
dict_T *dv_used_prev; /* previous dict in used dicts list */
};