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/getchar.c
+++ b/src/getchar.c
@@ -1792,6 +1792,14 @@ vgetc(void)
      */
     may_garbage_collect = FALSE;
 #endif
+#ifdef FEAT_BEVALTERM
+    if (c != K_MOUSEMOVE && c != K_IGNORE)
+    {
+	/* Don't trigger 'balloonexpr' unless only the mouse was moved. */
+	bevalexpr_due_set = FALSE;
+	ui_remove_balloon();
+    }
+#endif
 
     return c;
 }