patch 8.0.1309: cannot use 'balloonexpr' in a terminal commit https://github.com/vim/vim/commit/51b0f3701ecb440aa72ab6017c1df6940c0e0f6f Author: Bram Moolenaar <Bram@vim.org> Date: Sat Nov 18 18:52:04 2017 +0100 patch 8.0.1309: cannot use 'balloonexpr' in a terminal Problem: Cannot use 'balloonexpr' in a terminal. Solution: Add 'balloonevalterm' and add code to handle mouse movements in a terminal. Initial implementation for Unix with GUI.

--- a/src/proto/os_unix.pro
+++ b/src/proto/os_unix.pro
@@ -53,6 +53,7 @@ void mch_settmode(int tmode);
 void get_stty(void);
 int get_tty_info(int fd, ttyinfo_T *info);
 void mch_setmouse(int on);
+void mch_bevalterm_changed(void);
 void check_mouse_termcode(void);
 int mch_screenmode(char_u *arg);
 int mch_get_shellsize(void);