Fix search not triggered when query change and reload happen at the same time

Fix #3268

src/core.go

@@ -299,10 +299,12 @@ func Run(opts *Options, version string, revision string) {
 
 				case EvtSearchNew:
 					var command *string
+					var changed bool
 					switch val := value.(type) {
 					case searchRequest:
 						sort = val.sort
 						command = val.command
+						changed = val.changed
 						if command != nil {
 							useSnapshot = val.sync
 						}
@@ -314,10 +316,17 @@ func Run(opts *Options, version string, revision string) {
 						} else {
 							restart(*command)
 						}
+					}
+					if !changed {
 						break
 					}
 					if !useSnapshot {
-						snapshot, _ = chunkList.Snapshot()
+						newSnapshot, _ := chunkList.Snapshot()
+						// We want to avoid showing empty list when reload is triggered
+						// and the query string is changed at the same time i.e. command != nil && changed
+						if command == nil || len(newSnapshot) > 0 {
+							snapshot = newSnapshot
+						}
 					}
 					reset := !useSnapshot && clearCache()
 					matcher.Reset(snapshot, input(reset), true, !reading, sort, reset)

src/terminal.go

@@ -408,6 +408,7 @@ type searchRequest struct {
 	sort    bool
 	sync    bool
 	command *string
+	changed bool
 }
 
 type previewRequest struct {
@@ -3622,7 +3623,7 @@ func (t *Terminal) Loop() {
 		t.mutex.Unlock() // Must be unlocked before touching reqBox
 
 		if changed || newCommand != nil {
-			t.eventBox.Set(EvtSearchNew, searchRequest{sort: t.sort, sync: reloadSync, command: newCommand})
+			t.eventBox.Set(EvtSearchNew, searchRequest{sort: t.sort, sync: reloadSync, command: newCommand, changed: changed})
 		}
 		for _, event := range events {
 			t.reqBox.Set(event, nil)

test/test_go.rb

@@ -2861,6 +2861,11 @@ class TestGoFZF < TestBase
     tmux.send_keys :c
     tmux.until { |lines| assert_equal 0, lines.match_count }
   end
+
+  def test_reload_and_change
+    tmux.send_keys "(echo foo; echo bar) | #{FZF} --bind 'load:reload-sync(sleep 60)+change-query(bar)'", :Enter
+    tmux.until { |lines| assert_equal 1, lines.match_count }
+  end
 end
 
 module TestShell