Fix navigation in split tree view

Do not descend in directories when hovering the cursor in the tree view
while viewing a blob. To enter a directory, use <Tab> first to change
the active view.

NEWS.adoc

@@ -13,6 +13,7 @@ Bug fixes:
  - Use the full width for diffstat in the stage view.
  - Improve escaping of variables in external commands.
  - Fix cursor behaviour during staging. (#842, #1028)
+ - Fix navigation in split tree view.
 
 tig-2.5.5
 ---------

src/tig.c

@@ -261,7 +261,9 @@ view_driver(struct view *view, enum request request)
 			move_view(parent, request);
 			if (view_is_displayed(parent))
 				update_view_title(parent);
-			if (line != parent->pos.lineno) {
+			if (line != parent->pos.lineno &&
+			    !(parent == &tree_view && 
+			      parent->line[parent->pos.lineno].type == LINE_DIRECTORY)) {
 				end_update(view, true);
 				view_request(parent, REQ_ENTER);
 			}