vim-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.

af98a49dd0

src/nvim/version.c

@@ -657,7 +657,7 @@ static int included_patches[] = {
   // 1786 NA
   // 1785,
   // 1784 NA
-  // 1783,
+  1783,
   1782,
   // 1781,
   1780,