diff -up vim81/src/term.c.fixkeys vim81/src/term.c

--- vim81/src/term.c.fixkeys	2019-12-12 09:00:20.685567074 +0100

+++ vim81/src/term.c	2019-12-12 09:21:36.708769626 +0100

@@ -957,14 +957,14 @@ static struct builtin_term builtin_termc

     {K_XRIGHT,		IF_EB("\033[1;*C", ESC_STR "[1;*C")},

     {K_XLEFT,		IF_EB("\033[1;*D", ESC_STR "[1;*D")},

     // An extra set of function keys for vt100 mode

-    {K_XF1,		IF_EB("\033O*P", ESC_STR "O*P")},

-    {K_XF2,		IF_EB("\033O*Q", ESC_STR "O*Q")},

-    {K_XF3,		IF_EB("\033O*R", ESC_STR "O*R")},

-    {K_XF4,		IF_EB("\033O*S", ESC_STR "O*S")},

-    {K_F1,		IF_EB("\033[11;*~", ESC_STR "[11;*~")},

-    {K_F2,		IF_EB("\033[12;*~", ESC_STR "[12;*~")},

-    {K_F3,		IF_EB("\033[13;*~", ESC_STR "[13;*~")},

-    {K_F4,		IF_EB("\033[14;*~", ESC_STR "[14;*~")},

+    {K_XF1,             IF_EB("\033[11~", ESC_STR "[11~")},

+    {K_XF2,             IF_EB("\033[12~", ESC_STR "[12~")},

+    {K_XF3,             IF_EB("\033[13~", ESC_STR "[13~")},

+    {K_XF4,             IF_EB("\033[14~", ESC_STR "[14~")},

+    {K_F1,              IF_EB("\033OP", ESC_STR "OP")},

+    {K_F2,              IF_EB("\033OQ", ESC_STR "OQ")},

+    {K_F3,              IF_EB("\033OR", ESC_STR "OR")},

+    {K_F4,              IF_EB("\033OS", ESC_STR "OS")},

     {K_F5,		IF_EB("\033[15;*~", ESC_STR "[15;*~")},

     {K_F6,		IF_EB("\033[17;*~", ESC_STR "[17;*~")},

     {K_F7,		IF_EB("\033[18;*~", ESC_STR "[18;*~")},