fix issue where opening the first window would crash (#55)

sub07 · web-flow · commit e10ee88b862d · 2025-12-13T09:47:02.000+01:00
diff --git a/Cargo.lock b/Cargo.lock
diff --git a/Cargo.toml b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "winri"
 description = "A window scrolling tiler for Windows 11"
-version = "0.2.0"
+version = "0.2.1"
 edition = "2024"
 license = "MIT"
 
diff --git a/src/tiler.rs b/src/tiler.rs
@@ -216,7 +216,9 @@ impl ScrollTiler {
     /// If the focused window is tiled, new windows are appended after it.
     /// Otherwise, they are appended at the end.
     fn append_new_windows(&mut self, windows_snapshot: &HashSet<Window>) {
-        if let Some(focus_index) = self.focus_index().or(self.previously_focused_window_index) {
+        if let Some(focus_index) = self.focus_index().or(self.previously_focused_window_index)
+            && !self.windows.is_empty()
+        {
             for window in windows_snapshot {
                 if !self
                     .windows
