xA: mildly improve the experience

Fyne got a bit faster at layouting, but showing the log still kills it.

xA/xA.go

@@ -393,10 +393,10 @@ func bufferScrollToBottom() {
 func bufferPushLine(b *buffer, line bufferLine) {
 	b.lines = append(b.lines, line)
 
-	// Fyne's text layouting is extremely slow.
+	// This also noticeably improves performance.
 	// The limit could be made configurable,
 	// and we could use a ring buffer approach to storing the lines.
-	if len(b.lines) > 100 {
+	if len(b.lines) > 1000 {
 		b.lines = slices.Delete(b.lines, 0, 1)
 	}
 }
@@ -1138,17 +1138,10 @@ func relayRun() {
 	}, nil)
 
 	relayMessages := relayMakeReceiver(backendContext, backendConn)
-Loop:
-	for {
-		select {
-		case m, ok := <-relayMessages:
-			if !ok {
-				break Loop
-			}
-			fyne.DoAndWait(func() {
-				relayProcessMessage(&m)
-			})
-		}
+	for m := range relayMessages {
+		fyne.DoAndWait(func() {
+			relayProcessMessage(&m)
+		})
 	}
 	fyne.DoAndWait(func() {
 		wConnect.Show()
@@ -1304,11 +1297,11 @@ func (e *inputEntry) KeyDown(key *fyne.KeyEvent) {
 		}
 
 		switch {
-		case modifiedKey.Modifier == fyne.KeyModifierControl &&
+		case modifiedKey.Modifier == fyne.KeyModifierAlt &&
 			modifiedKey.KeyName == fyne.KeyP:
 			inputUp()
 			return
-		case modifiedKey.Modifier == fyne.KeyModifierControl &&
+		case modifiedKey.Modifier == fyne.KeyModifierAlt &&
 			modifiedKey.KeyName == fyne.KeyN:
 			inputDown()
 			return
@@ -1443,27 +1436,47 @@ func rotatedBuffers() []int {
 	return r
 }
 
+func actionBufferPrevious() {
+	if r := rotatedBuffers(); len(r) <= 0 {
+	} else if i := r[len(r)-1]; i == 0 {
+		bufferActivate(buffers[len(buffers)-1].bufferName)
+	} else {
+		bufferActivate(buffers[i-1].bufferName)
+	}
+}
+
+func actionBufferNext() {
+	if r := rotatedBuffers(); len(r) <= 0 {
+	} else {
+		bufferActivate(buffers[r[0]].bufferName)
+	}
+}
+
 var shortcuts = map[desktop.CustomShortcut]func(){
 	{
 		KeyName:  fyne.KeyPageUp,
 		Modifier: fyne.KeyModifierControl,
-	}: func() {
-		if r := rotatedBuffers(); len(r) <= 0 {
-		} else if i := r[len(r)-1]; i == 0 {
-			bufferActivate(buffers[len(buffers)-1].bufferName)
-		} else {
-			bufferActivate(buffers[i-1].bufferName)
-		}
-	},
+	}: actionBufferPrevious,
+	{
+		KeyName:  fyne.KeyPageUp,
+		Modifier: fyne.KeyModifierAlt,
+	}: actionBufferPrevious,
+	{
+		KeyName:  fyne.KeyF5,
+		Modifier: 0,
+	}: actionBufferPrevious,
 	{
 		KeyName:  fyne.KeyPageDown,
 		Modifier: fyne.KeyModifierControl,
-	}: func() {
-		if r := rotatedBuffers(); len(r) <= 0 {
-		} else {
-			bufferActivate(buffers[r[0]].bufferName)
-		}
-	},
+	}: actionBufferNext,
+	{
+		KeyName:  fyne.KeyPageDown,
+		Modifier: fyne.KeyModifierAlt,
+	}: actionBufferNext,
+	{
+		KeyName:  fyne.KeyF6,
+		Modifier: 0,
+	}: actionBufferNext,
 	{
 		KeyName:  fyne.KeyTab,
 		Modifier: fyne.KeyModifierAlt,