Handle cases in which there is no git repo data

git/display.go

@@ -10,6 +10,10 @@ func (widget *Widget) display() {
 	widget.View.Clear()
 
 	repoData := widget.currentData()
+	if repoData == nil {
+		fmt.Fprintf(widget.View, "%s", " Git repo data is unavailable (1)")
+		return
+	}
 
 	title := fmt.Sprintf("[green]%s[white]\n", repoData.Repository)
 	widget.View.SetTitle(fmt.Sprintf(" Git: %s ", title))

git/widget.go

@@ -5,7 +5,6 @@ import (
 	"strings"
 	"time"
 
-
 	"github.com/gdamore/tcell"
 	"github.com/olebedev/config"
 	"github.com/senorprogrammer/wtf/wtf"
@@ -78,7 +77,15 @@ func (widget *Widget) Prev() {
 /* -------------------- Unexported Functions -------------------- */
 
 func (widget *Widget) currentData() *GitRepo {
-  return widget.Data[widget.Idx]
+	if len(widget.Data) == 0 {
+		return nil
+	}
+
+	if widget.Idx < 0 || widget.Idx >= len(widget.Data) {
+		return nil
+	}
+
+	return widget.Data[widget.Idx]
 }
 
 func (widget *Widget) keyboardIntercept(event *tcell.EventKey) *tcell.EventKey {