patch 8.1.2020: it is not easy to change the window layout
Problem: It is not easy to change the window layout.
Solution: Add win_splitmove(). (Andy Massimino, closes #4561)
diff --git a/src/evalfunc.c b/src/evalfunc.c
index dafd3b6..438aac8 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -850,6 +850,7 @@
{"win_id2tabwin", 1, 1, FEARG_1, f_win_id2tabwin},
{"win_id2win", 1, 1, FEARG_1, f_win_id2win},
{"win_screenpos", 1, 1, FEARG_1, f_win_screenpos},
+ {"win_splitmove", 2, 3, FEARG_1, f_win_splitmove},
{"winbufnr", 1, 1, FEARG_1, f_winbufnr},
{"wincol", 0, 0, 0, f_wincol},
{"winheight", 1, 1, FEARG_1, f_winheight},