From 87874bba88c315b11ce5da37c178e6fdedb8708a Mon Sep 17 00:00:00 2001
From: Junegunn Choi <junegunn.c@gmail.com>
Date: Sun, 20 Aug 2017 01:58:51 +0900
Subject: [PATCH] Remove redundant read event when --sync is used

---
 src/core.go          | 4 ++++
 src/util/eventbox.go | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/src/core.go b/src/core.go
index 6bb4b2e..1c8182e 100644
--- a/src/core.go
+++ b/src/core.go
@@ -188,6 +188,7 @@ func Run(opts *Options, revision string) {
 	if opts.Sync {
 		eventBox.Unwatch(EvtReadNew)
 		eventBox.WaitFor(EvtReadFin)
+		eventBox.Unset(EvtReadNew)
 	}
 
 	// Go interactive
@@ -216,6 +217,9 @@ func Run(opts *Options, revision string) {
 					reading = reading && evt == EvtReadNew
 					snapshot, count := chunkList.Snapshot()
 					terminal.UpdateCount(count, !reading, value.(bool))
+					if opts.Sync {
+						terminal.UpdateList(PassMerger(&snapshot, opts.Tac))
+					}
 					matcher.Reset(snapshot, terminal.Input(), false, !reading, sort)
 
 				case EvtSearchNew:
diff --git a/src/util/eventbox.go b/src/util/eventbox.go
index b710cf1..acd9561 100644
--- a/src/util/eventbox.go
+++ b/src/util/eventbox.go
@@ -45,6 +45,13 @@ func (b *EventBox) Set(event EventType, value interface{}) {
 	b.cond.L.Unlock()
 }
 
+// Unset turns off the event type on the box
+func (b *EventBox) Unset(event EventType) {
+	b.cond.L.Lock()
+	delete(b.events, event)
+	b.cond.L.Unlock()
+}
+
 // Clear clears the events
 // Unsynchronized; should be called within Wait routine
 func (events *Events) Clear() {