commit af89d12

Fetch the chat history of the last opened buffer first

This will slightly speed up startup time.

 1@@ -837,19 +837,34 @@ func (app *App) handleIRCEvent(netID string, ev interface{}) {
 2 		bounds.Update(&line)
 3 		app.messageBounds[boundKey{netID, buffer}] = bounds
 4 	case irc.HistoryTargetsEvent:
 5-		for target, last := range ev.Targets {
 6-			if s.IsChannel(target) {
 7+		type target struct {
 8+			name string
 9+			last time.Time
10+		}
11+		// try to fetch the history of the last opened buffer first
12+		targets := make([]target, 0, len(ev.Targets))
13+		if app.lastNetID == netID {
14+			if last, ok := ev.Targets[app.lastBuffer]; ok {
15+				targets = append(targets, target{app.lastBuffer, last})
16+				delete(ev.Targets, app.lastBuffer)
17+			}
18+		}
19+		for name, last := range ev.Targets {
20+			targets = append(targets, target{name, last})
21+		}
22+		for _, target := range targets {
23+			if s.IsChannel(target.name) {
24 				continue
25 			}
26-			s.MonitorAdd(target)
27-			s.ReadGet(target)
28-			app.win.AddBuffer(netID, "", target)
29+			s.MonitorAdd(target.name)
30+			s.ReadGet(target.name)
31+			app.win.AddBuffer(netID, "", target.name)
32 			// CHATHISTORY BEFORE excludes its bound, so add 1ms
33 			// (precision of the time tag) to include that last message.
34-			last = last.Add(1 * time.Millisecond)
35-			s.NewHistoryRequest(target).
36+			target.last = target.last.Add(1 * time.Millisecond)
37+			s.NewHistoryRequest(target.name).
38 				WithLimit(500).
39-				Before(last)
40+				Before(target.last)
41 		}
42 	case irc.HistoryEvent:
43 		var linesBefore []ui.Line