Add SaveAll command and display + for modified tabs

Closes #651

cmd/micro/actions.go

@@ -705,6 +705,24 @@ func (v *View) InsertTab(usePlugin bool) bool {
 	return true
 }
 
+// SaveAll saves all open buffers
+func (v *View) SaveAll(usePlugin bool) bool {
+	if usePlugin && !PreActionCall("SaveAll", v) {
+		return false
+	}
+
+	for _, t := range tabs {
+		for _, v := range t.views {
+			v.Save(false)
+		}
+	}
+
+	if usePlugin {
+		return PostActionCall("SaveAll", v)
+	}
+	return false
+}
+
 // Save the buffer to disk
 func (v *View) Save(usePlugin bool) bool {
 	if usePlugin && !PreActionCall("Save", v) {

cmd/micro/bindings.go

@@ -41,6 +41,7 @@ var bindingActions = map[string]func(*View, bool) bool{
 	"Delete":              (*View).Delete,
 	"InsertTab":           (*View).InsertTab,
 	"Save":                (*View).Save,
+	"SaveAll":             (*View).SaveAll,
 	"SaveAs":              (*View).SaveAs,
 	"Find":                (*View).Find,
 	"FindNext":            (*View).FindNext,

cmd/micro/tab.go

@@ -89,13 +89,17 @@ func TabbarString() (string, map[int]int) {
 		} else {
 			str += " "
 		}
-		str += t.views[t.CurView].Buf.GetName()
+		buf := t.views[t.CurView].Buf
+		str += buf.GetName()
+		if buf.IsModified {
+			str += " +"
+		}
 		if i == curTab {
 			str += "]"
 		} else {
 			str += " "
 		}
-		indicies[len(str)-1] = i + 1
+		indicies[Count(str)-1] = i + 1
 		str += " "
 	}
 	return str, indicies