patch 8.0.0592: if a job writes to a buffer screen is not updated commit https://github.com/vim/vim/commit/29ae377ea7039874337bc79ace9ab2b37b9056e5 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Apr 30 19:39:39 2017 +0200 patch 8.0.0592: if a job writes to a buffer screen is not updated Problem: If a job writes to a buffer and the user is typing a command, the screen isn't updated. When a message is displayed the changed buffer may cause it to be cleared. (Ramel Eshed) Solution: Update the screen and then the command line if the screen didn't scroll. Avoid inserting screen lines, as it clears any message. Update the status line when the buffer changed.

--- a/src/ex_getln.c
+++ b/src/ex_getln.c
@@ -3337,10 +3337,17 @@ cmdline_del(int from)
     void
 redrawcmdline(void)
 {
+    redrawcmdline_ex(TRUE);
+}
+
+    void
+redrawcmdline_ex(int do_compute_cmdrow)
+{
     if (cmd_silent)
 	return;
     need_wait_return = FALSE;
-    compute_cmdrow();
+    if (do_compute_cmdrow)
+	compute_cmdrow();
     redrawcmd();
     cursorcmd();
 }