(jit-lock-deferred-fontify): Pay attention to skipped redisplays

* lisp/jit-lock.el (jit-lock-deferred-fontify): Make sure we refresh
the buffers, even if the forced redisplay is interrupted.

1 files changed, 5 insertions, 3 deletions

diff --git a/lisp/jit-lock.el b/lisp/jit-lock.el
index 5f9196da645..8c798d5c4d0 100644
--- a/lisp/jit-lock.el
+++ b/lisp/jit-lock.el
@@ -583,11 +583,13 @@ non-nil in a repeated invocation of this function."
                       'fontified nil))
                    (setq pos (next-single-property-change
                               pos 'fontified)))))))))
-    (setq jit-lock-defer-buffers nil)
     ;; Force fontification of the visible parts.
-    (let ((jit-lock-defer-timer nil))
+    (let ((buffers jit-lock-defer-buffers)
+          (jit-lock-defer-timer nil))
+      (setq jit-lock-defer-buffers nil)
       ;; (message "Jit-Defer Now")
-      (sit-for 0)
+      (unless (redisplay)                       ;FIXME: Should we `force'?
+        (setq jit-lock-defer-buffers buffers))
       ;; (message "Jit-Defer Done")
       )))