patch 8.1.0590: when a job ends the closed channels are not handled

Problem:    When a job ends the closed channels are not handled.
Solution:   When a job is detected to have ended, check the channels again.
            (closes #3530)

src/channel.c

@@ -5510,24 +5510,28 @@ has_pending_job(void)
 
 /*
  * Called once in a while: check if any jobs that seem useful have ended.
+ * Returns TRUE if a job did end.
  */
-    void
+    int
 job_check_ended(void)
 {
     int		i;
+    int		did_end = FALSE;
 
+    // be quick if there are no jobs to check
     if (first_job == NULL)
-	return;
+	return did_end;
 
     for (i = 0; i < MAX_CHECK_ENDED; ++i)
     {
-	/* NOTE: mch_detect_ended_job() must only return a job of which the
-	 * status was just set to JOB_ENDED. */
+	// NOTE: mch_detect_ended_job() must only return a job of which the
+	// status was just set to JOB_ENDED.
 	job_T	*job = mch_detect_ended_job(first_job);
 
 	if (job == NULL)
 	    break;
-	job_cleanup(job); /* may free "job" */
+	did_end = TRUE;
+	job_cleanup(job); // may free "job"
     }
 
     if (channel_need_redraw)
@@ -5535,6 +5539,7 @@ job_check_ended(void)
 	channel_need_redraw = FALSE;
 	redraw_after_callback(TRUE);
     }
+    return did_end;
 }
 
 /*

src/misc2.c

@@ -6351,6 +6351,8 @@ has_non_ascii(char_u *s)
 #endif
 
 #if defined(MESSAGE_QUEUE) || defined(PROTO)
+# define MAX_REPEAT_PARSE 8
+
 /*
  * Process messages that have been queued for netbeans or clientserver.
  * Also check if any jobs have ended.
@@ -6361,12 +6363,16 @@ has_non_ascii(char_u *s)
 parse_queued_messages(void)
 {
     win_T   *old_curwin = curwin;
+    int	    i;
 
     // Do not handle messages while redrawing, because it may cause buffers to
     // change or be wiped while they are being redrawn.
     if (updating_screen)
 	return;
 
+    // Loop when a job ended, but don't keep looping forever.
+    for (i = 0; i < MAX_REPEAT_PARSE; ++i)
+    {
 	// For Win32 mch_breakcheck() does not check for input, do it here.
 # if defined(WIN32) && defined(FEAT_JOB_CHANNEL)
 	channel_handle_events(FALSE);
@@ -6388,9 +6394,13 @@ parse_queued_messages(void)
 	server_parse_messages();
 # endif
 # ifdef FEAT_JOB_CHANNEL
-    // Check if any jobs have ended.
-    job_check_ended();
+	// Check if any jobs have ended.  If so, repeat the above to handle
+	// changes, e.g. stdin may have been closed.
+	if (job_check_ended())
+	    continue;
 # endif
+	break;
+    }
 
     // If the current window changed we need to bail out of the waiting loop.
     // E.g. when a job exit callback closes the terminal window.

src/proto/channel.pro

@@ -65,7 +65,7 @@ job_T *job_alloc(void);
 void job_set_options(job_T *job, jobopt_T *opt);
 void job_stop_on_exit(void);
 int has_pending_job(void);
-void job_check_ended(void);
+int job_check_ended(void);
 job_T *job_start(typval_T *argvars, char **argv_arg, jobopt_T *opt_arg, int is_terminal);
 char *job_status(job_T *job);
 void job_info(job_T *job, dict_T *dict);

src/version.c

@@ -799,6 +799,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    590,
 /**/
     589,
 /**/