Add the beginnings of window rules

resources/default-config.kdl

@@ -248,6 +248,49 @@ animations {
     }
 }
 
+// Window rules let you adjust behavior for individual windows.
+// They are processed in order of appearance in this file.
+// (This example rule is commented out with a "/-" in front.)
+/-window-rule {
+    // Match directives control which windows this rule will apply to.
+    // You can match by app-id and by title.
+    // The window must match all properties of the match directive.
+    match app-id="org.myapp.MyApp" title="My Cool App"
+
+    // There can be multiple match directives. A window must match any one
+    // of the rule's match directives.
+    //
+    // If there are no match directives, any window will match the rule.
+    match title="Second App"
+
+    // You can also add exclude directives which have the same properties.
+    // If a window matches any exclude directive, it won't match this rule.
+    //
+    // Both app-id and title are regular expressions.
+    // Raw KDL strings are helpful here.
+    exclude app-id=r#"\.unwanted\."#
+
+    // Here are the properties that you can set on a window rule.
+    // You can override the default column width.
+    default-column-width { proportion 0.75; }
+
+    // You can set the output that this window will initially open on.
+    // If such an output does not exist, it will open on the currently
+    // focused output as usual.
+    open-on-output "eDP-1"
+}
+
+// Here's a useful example. Work around WezTerm's initial configure bug
+// by setting an empty default-column-width.
+window-rule {
+    // This regular expression is intentially made as specific as possile,
+    // since this is the default config, and we want no false positives.
+    // You can get away with just app-id="wezterm" if you want.
+    // The regular expression can match anywhere in the string.
+    match app-id=r#"^org\.wezfurlong\.wezterm$"#
+    default-column-width {}
+}
+
 binds {
     // Keys consist of modifiers separated by + signs, followed by an XKB key name
     // in the end. To find an XKB name for a particular key, you may use a program