patch 7.4.2109
Problem: Setting 'display' to "lastline" is a drastic change, while
omitting it results in lots of "@" lines.
Solution: Add "truncate" to show "@@@" for a truncated line.
diff --git a/src/option.h b/src/option.h
index f05a466..bc8d4e0 100644
--- a/src/option.h
+++ b/src/option.h
@@ -454,10 +454,11 @@
EXTERN char_u *p_dy; /* 'display' */
EXTERN unsigned dy_flags;
#ifdef IN_OPTION_C
-static char *(p_dy_values[]) = {"lastline", "uhex", NULL};
+static char *(p_dy_values[]) = {"lastline", "truncate", "uhex", NULL};
#endif
#define DY_LASTLINE 0x001
-#define DY_UHEX 0x002
+#define DY_TRUNCATE 0x002
+#define DY_UHEX 0x004
EXTERN int p_ed; /* 'edcompatible' */
#ifdef FEAT_WINDOWS
EXTERN char_u *p_ead; /* 'eadirection' */