From 0bec16e3880a148a7fc3887cdf71f81c547aff7a Mon Sep 17 00:00:00 2001
From: Aldehir Rojas <hello@alde.dev>
Date: Wed, 16 Sep 2026 01:47:28 -0500
Subject: [PATCH] chat : force `\n</think>` on reasoning budget end for
 qwen3-coder (#28869)

---
 common/parsers/qwen3-coder.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/common/parsers/qwen3-coder.cpp b/common/parsers/qwen3-coder.cpp
index 7938a20279..208f551f1b 100644
--- a/common/parsers/qwen3-coder.cpp
+++ b/common/parsers/qwen3-coder.cpp
@@ -23,8 +23,9 @@ common_chat_params common_chat_params_init_qwen3_coder(const common_chat_templat
     if (supports_reasoning) {
         data.thinking_start_tag = "<think>";
         // Support both </think> and <tool_call> as reasoning end sequences.
+        // The newline variant comes first so it is included in the forced message
         // <function= is omitted, as it is a workaround for Qwen3-Coder which is not a thinking model
-        data.thinking_end_tags = { "</think>", "<tool_call>" };
+        data.thinking_end_tags = { "\n</think>", "</think>", "<tool_call>" };
         data.preserved_tokens.insert(data.preserved_tokens.end(), { "<think>", "</think>" });
     }