Skip parsing empty key specs

Author: devnullvoid

internal/ui/components/keyboard.go

@@ -15,6 +15,10 @@ import (
 
 // keyMatch checks if an event matches a key specification string.
 func keyMatch(ev *tcell.EventKey, spec string) bool {
+	if strings.TrimSpace(spec) == "" {
+		return false
+	}
+
 	key, r, mod, err := keys.Parse(spec)
 	if err != nil {
 		if config.DebugEnabled {

internal/ui/components/keyboard_test.go

@@ -0,0 +1,19 @@
+package components
+
+import (
+	"testing"
+
+	"github.com/gdamore/tcell/v2"
+)
+
+func TestKeyMatchEmptySpecReturnsFalse(t *testing.T) {
+	ev := tcell.NewEventKey(tcell.KeyRune, 'x', tcell.ModNone)
+
+	if keyMatch(ev, "") {
+		t.Fatal("expected empty key spec to never match")
+	}
+
+	if keyMatch(ev, "   ") {
+		t.Fatal("expected whitespace-only key spec to never match")
+	}
+}