patch 8.2.1949: Vim9: using extend() on null dict is silently ignored
Problem: Vim9: using extend() on null dict is silently ignored.
Solution: Give an error message. Initialize a dict variable with an empty
dictionary. (closes #7251)
diff --git a/src/errors.h b/src/errors.h
index 0e0377a..eec45df 100644
--- a/src/errors.h
+++ b/src/errors.h
@@ -288,4 +288,8 @@
INIT(= N_("E1131: Cannot add to null blob"));
EXTERN char e_missing_function_argument[]
INIT(= N_("E1132: Missing function argument"));
+EXTERN char e_cannot_extend_null_dict[]
+ INIT(= N_("E1133: Cannot extend a null dict"));
+EXTERN char e_cannot_extend_null_list[]
+ INIT(= N_("E1134: Cannot extend a null list"));
#endif