patch 8.2.3757: an overlong highlight group name is silently truncated
Problem: An overlong highlight group name is silently truncated.
Solution: Give an error if the name is too long. (closes #9289)
diff --git a/src/errors.h b/src/errors.h
index a494de3..452ff45 100644
--- a/src/errors.h
+++ b/src/errors.h
@@ -756,3 +756,5 @@
INIT(= N_("E1247: Line number out of range"));
EXTERN char e_closure_called_from_invalid_context[]
INIT(= N_("E1248: Closure called from invalid context"));
+EXTERN char e_highlight_group_name_too_long[]
+ INIT(= N_("E1249: Highlight group name too long"));