router: clarify when the matched route path is saved
diff --git a/router.go b/router.go
index e3013a6..b6cb821 100644
--- a/router.go
+++ b/router.go
@@ -150,7 +150,9 @@
maxParams uint16
// SaveMatchedRoutePathToContext when enabled adds the matched route path
- // onto the http.Request context before invoking the handler
+ // onto the http.Request context before invoking the handler.
+ // The matched route path is only added to handlers of routes that were
+ // registered when this option was enabled.
SaveMatchedRoutePathToContext bool
// Enables automatic redirection if the current route can't be matched but a
