patch 7.4.1611
Problem: The versplit feature makes the code uneccessary complicated.
Solution: Remove FEAT_VERTSPLIT, always support vertical splits when
FEAT_WINDOWS is defined.
diff --git a/src/syntax.c b/src/syntax.c
index 7d2233a..29b6888 100644
--- a/src/syntax.c
+++ b/src/syntax.c
@@ -6783,7 +6783,7 @@
"StatusLine term=reverse,bold cterm=reverse,bold gui=reverse,bold"),
CENT("StatusLineNC term=reverse cterm=reverse",
"StatusLineNC term=reverse cterm=reverse gui=reverse"),
-#ifdef FEAT_VERTSPLIT
+#ifdef FEAT_WINDOWS
CENT("VertSplit term=reverse cterm=reverse",
"VertSplit term=reverse cterm=reverse gui=reverse"),
#endif