patch 8.0.0592: if a job writes to a buffer screen is not updatedv8.0.0592

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.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/vim.h b/src/vim.h
index 57866ef53..cbe14e535 100644
--- a/src/vim.h
+++ b/src/vim.h
@@ -630,6 +630,8 @@ extern int (*dyn_libintl_putenv)(const char *envstring);
  * 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 */