GC temp buffers after they are 25th in history

src/plugin_file_commands.cpp

@@ -15,6 +15,7 @@ void New(Window *window, String name = "") {
         name = GetUniqueBufferName(dir, "new");
     }
     WindowOpenBufferView(window, name);
+    RunGCThisFrame = true;
 }
 
 void CMD_New() {

src/ui.cpp

@@ -5,6 +5,7 @@ void JumpTempBuffer(BSet *set, String buffer_name) {
     set->view = WindowOpenBufferView(set->window, buffer_name);
     set->buffer = GetBuffer(set->view->active_buffer);
     set->buffer->temp = true;
+    RunGCThisFrame = true;
 }
 
 void AddCommand(Array<Command> *arr, String name, Trigger *trigger, CMDFunction *function) {

src/view.cpp

@@ -103,6 +103,22 @@ API bool ViewIsCrumb(ViewID view_id) {
     return false;
 }
 
+
+API Int GetViewReferencedInHistoryRating(ViewID view_id) {
+    ForItem (window, Windows) {
+        For (window->goto_redo) if (it.view_id == view_id) return 1;
+        Int i = 0;
+        For (window->goto_history) {
+            i += 1;
+            if (it.view_id == view_id) {
+                return i;
+            }
+        }
+    }
+    return 0;
+}
+
+
 bool ViewIsActive(ViewID id) {
     For (Windows) {
         if (it->active_view == id) {
@@ -112,16 +128,16 @@ bool ViewIsActive(ViewID id) {
     return false;
 }
 
-API bool ViewIsReferenced(View *view) {
+API Int ViewIsReferenced(View *view) {
     if (view->special) {
-        return true;
+        return 1;
     }
 
-    if (ViewIsCrumb(view->id)) {
-        return true;
+    if (ViewIsActive(view->id)) {
+        return 1;
     }
 
-    return ViewIsActive(view->id);
+    return GetViewReferencedInHistoryRating(view->id);
 }
 
 bool BufferIsReferenced(Buffer *buffer) {