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.
diff --git a/src/vim.h b/src/vim.h
index 57866ef..cbe14e5 100644
--- a/src/vim.h
+++ b/src/vim.h
@@ -630,6 +630,8 @@
* flags for update_screen()
* The higher the value, the higher the priority
*/
+#define VALID_NO_UPDATE 5 /* no new changes, keep the command line if
+ possible */
#define VALID 10 /* buffer not changed, or changes marked
with b_mod_* */
#define INVERTED 20 /* redisplay inverted part that changed */