From 1c692e4be1fbe895328fa4aa5f6a48efaf387c36 Mon Sep 17 00:00:00 2001
From: Oskar Eichler <62393985+OskarEichler@users.noreply.github.com>
Date: Sat, 29 Aug 2026 18:42:34 +0200
Subject: [PATCH] Preserve required RBI keyword parameters

---
 lib/rbs/prototype/rbi.rb | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/rbs/prototype/rbi.rb b/lib/rbs/prototype/rbi.rb
index 169e910422..3180a99e9b 100644
--- a/lib/rbs/prototype/rbi.rb
+++ b/lib/rbs/prototype/rbi.rb
@@ -549,10 +549,10 @@ def parse_params(args_node, args, method_type, variables:, overloads:)
         while kw
           name, value = kw.children[0].children
           if (type = vars[name])
-            if value
-              optional_keywords[name] = Types::Function::Param.new(type: type, name: name)
-            else
+            if value.nil? || value == :NODE_SPECIAL_REQUIRED_KEYWORD
               required_keywords[name] = Types::Function::Param.new(type: type, name: name)
+            else
+              optional_keywords[name] = Types::Function::Param.new(type: type, name: name)
             end
           end