keys command

src/textual/cli/cli.py

@@ -123,3 +123,11 @@ def colors():
     from textual.cli.previews import colors
 
     colors.app.run()
+
+
+@run.command("keys")
+def keys():
+    """Show key events"""
+    from textual.cli.previews import keys
+
+    keys.app.run()

src/textual/cli/previews/keys.py

@@ -0,0 +1,37 @@
+from rich.panel import Panel
+
+from textual.app import App, ComposeResult
+from textual import events
+from textual.widgets import Header, Footer, TextLog
+
+
+class KeyLog(TextLog, inherit_bindings=False):
+    """We don't want to handle scroll keys."""
+
+
+class KeysApp(App):
+    """Show key events in a text log."""
+
+    TITLE = "Textual Keys"
+
+    BINDINGS = [("c", "clear", "Clear")]
+
+    def compose(self) -> ComposeResult:
+        yield Header()
+        yield Footer()
+        yield KeyLog()
+
+    def on_ready(self) -> None:
+        self.query_one(KeyLog).write(Panel("Press some keys!"))
+
+    def on_key(self, event: events.Key) -> None:
+        self.query_one(KeyLog).write(event)
+
+    def action_clear(self) -> None:
+        self.query_one(KeyLog).clear()
+
+
+app = KeysApp()
+
+if __name__ == "__main__":
+    app.run()

src/textual/events.py

@@ -209,7 +209,9 @@ class Key(InputEvent):
 
     def __rich_repr__(self) -> rich.repr.Result:
         yield "key", self.key
-        yield "char", self.char, None
+        yield "char", self.char
+        yield "is_printable", self.is_printable
+        yield "key_aliases", self.key_aliases, [self.key_name]
 
     @property
     def key_name(self) -> str | None: