condense builtin tool call regex

Author: aldehir

common/chat.cpp

@@ -1362,8 +1362,7 @@ static void common_chat_parse_gpt_oss(common_chat_msg_parser & builder) {
     static const common_regex user_tool_call_regex(
         "functions\\.([a-zA-Z_][a-zA-Z0-9_]*)\\s?(?:<\\|constrain\\|>([a-zA-Z]+))?<\\|message\\|>"
     );
-    static const common_regex browser_tool_call_regex("browser\\.(search|open|find)[\\s\\S]*<\\|message\\|>");
-    static const common_regex python_tool_call_regex("python\\s?(?:code)?<\\|message\\|>");
+    static const common_regex builtin_tool_call_regex("(?:browser|python)[\\s\\S]*<\\|message\\|>");
 
     auto consume_until_start = [&]() {
         if (auto res = builder.try_find_regex(start_regex, std::string::npos, false)) {
@@ -1379,7 +1378,7 @@ static void common_chat_parse_gpt_oss(common_chat_msg_parser & builder) {
             auto name = builder.str(res->groups[1]);
             auto args = builder.consume_rest();
             builder.add_tool_call(name, "", args);
-        } else if (builder.try_consume_regex(browser_tool_call_regex) || builder.try_consume_regex(python_tool_call_regex)) {
+        } else if (builder.try_consume_regex(builtin_tool_call_regex)) {
             builder.consume_rest();
             LOG_ERR("builtin tool calls not implemented");
         } else {