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/option.h b/src/option.h
index e962ba3..cf7ba04 100644
--- a/src/option.h
+++ b/src/option.h
@@ -463,7 +463,7 @@
#define DY_LASTLINE 0x001
#define DY_UHEX 0x002
EXTERN int p_ed; /* 'edcompatible' */
-#ifdef FEAT_VERTSPLIT
+#ifdef FEAT_WINDOWS
EXTERN char_u *p_ead; /* 'eadirection' */
#endif
EXTERN int p_ea; /* 'equalalways' */
@@ -802,7 +802,7 @@
#ifdef FEAT_SPELL
EXTERN char_u *p_sps; /* 'spellsuggest' */
#endif
-#ifdef FEAT_VERTSPLIT
+#ifdef FEAT_WINDOWS
EXTERN int p_spr; /* 'splitright' */
#endif
EXTERN int p_sol; /* 'startofline' */
@@ -957,8 +957,6 @@
#ifdef FEAT_WINDOWS
EXTERN long p_wh; /* 'winheight' */
EXTERN long p_wmh; /* 'winminheight' */
-#endif
-#ifdef FEAT_VERTSPLIT
EXTERN long p_wmw; /* 'winminwidth' */
EXTERN long p_wiw; /* 'winwidth' */
#endif
@@ -1172,8 +1170,6 @@
#endif
#ifdef FEAT_WINDOWS
, WV_WFH
-#endif
-#ifdef FEAT_VERTSPLIT
, WV_WFW
#endif
, WV_WRAP