patch 8.2.1047: Vim9: script cannot use line continuation like :def function
Problem: Vim9: script cannot use line continuation like in a :def function.
Solution: Pass the getline function pointer to the eval() functions. Use it
for addition and multiplication operators.
diff --git a/src/globals.h b/src/globals.h
index cd15491..8601e2b 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -1880,6 +1880,9 @@
// Used for lv_first in a non-materialized range() list.
EXTERN listitem_T range_list_item;
+
+// Passed to an eval() function to enable evaluation.
+EXTERN evalarg_T EVALARG_EVALUATE INIT2(EVAL_EVALUATE, NULL);
#endif
#ifdef MSWIN