patch 7.4.1783
Problem:    The old regexp engine doesn't handle character classes correctly.
            (Manuel Ortega)
Solution:   Use regmbc() instead of regc().  Add a test.
diff --git a/src/version.c b/src/version.c
index 09372ef..a4f3252 100644
--- a/src/version.c
+++ b/src/version.c
@@ -754,6 +754,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1783,
+/**/
     1782,
 /**/
     1781,