Merge pull request #1730 from mitchellh/dirty

renderer/metal: reset screen dirty flag properly, be more careful setting selection dirty flag

src/renderer/Metal.zig

@@ -932,6 +932,7 @@ pub fn updateFrame(
         // success and reset while we hold the lock. This is much easier
         // than coordinating row by row or as changes are persisted.
         state.terminal.flags.dirty = .{};
+        state.terminal.screen.dirty = .{};
         {
             var it = state.terminal.screen.pages.pageIterator(
                 .right_down,

src/terminal/Screen.zig

@@ -1344,9 +1344,11 @@ pub fn select(self: *Screen, sel_: ?Selection) !void {
 
 /// Same as select(null) but can't fail.
 pub fn clearSelection(self: *Screen) void {
-    if (self.selection) |*sel| sel.deinit(self);
-    self.selection = null;
+    if (self.selection) |*sel| {
+        sel.deinit(self);
         self.dirty.selection = true;
+    }
+    self.selection = null;
 }
 
 pub const SelectionString = struct {