updated for version 7.4.577
Problem:    Matching with a virtual column has a lot of overhead on very long
            lines. (Issue 310)
Solution:   Bail out early if there can't be a match. (Christian Brabandt)
            Also check for CTRL-C at every position.
diff --git a/src/version.c b/src/version.c
index 4f31005..1367621 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    577,
+/**/
     576,
 /**/
     575,