patch 8.0.0062
Problem:    No digraph for HORIZONTAL ELLIPSIS.
Solution:   Use ",.". (Hans Ginzel, closes #1226)
diff --git a/src/digraph.c b/src/digraph.c
index ef2dd82..6a57d8a 100644
--- a/src/digraph.c
+++ b/src/digraph.c
@@ -1312,6 +1312,7 @@
 	{'/', '-', 0x2020},
 	{'/', '=', 0x2021},
 	{'.', '.', 0x2025},
+	{',', '.', 0x2026},
 	{'%', '0', 0x2030},
 	{'1', '\'', 0x2032},
 	{'2', '\'', 0x2033},