Update chat_template.jinja

chat_template.jinja

@@ -1,3 +1,4 @@
+{# Chat template fixes by Unsloth #}
 {#-
   In addition to the normal inputs of `messages` and `tools`, this template also accepts the
   following kwargs:
@@ -204,7 +205,7 @@
         {%- set reasoning_effort = "medium" %}
     {%- endif %}
     {{- "Reasoning: " + reasoning_effort + "\n\n" }}
-    {%- if builtin_tools is defined and builtin_tools is not none %}
+    {%- if builtin_tools %}
         {{- "# Tools\n\n" }}
         {%- set available_builtin_tools = namespace(browser=false, python=false) %}
         {%- for tool in builtin_tools %}
@@ -301,7 +302,11 @@
             {{- "<|start|>assistant to=" }}
             {{- "functions." + tool_call.name + "<|channel|>commentary " }}
             {{- (tool_call.content_type if tool_call.content_type is defined else "json") + "<|message|>" }}
-            {{- tool_call.arguments|tojson }}
+            {%- if tool_call.arguments is string %}
+                {{- tool_call.arguments }}
+            {%- else %}
+                {{- tool_call.arguments|tojson }}
+            {%- endif %}
             {{- "<|call|>" }}
             {%- set last_tool_call.name = tool_call.name %}
         {%- elif loop.last and not add_generation_prompt %}
@@ -314,6 +319,10 @@
             {#- <|return|> should never be an input to the model, but we include it as the final token #}
             {#- when training, so the model learns to emit it. #}
             {{- "<|start|>assistant<|channel|>final<|message|>" + message.content + "<|end|>" }}
+        {%- elif "thinking" in message %}
+            {#- CoT is dropped during all previous turns, so we never render it for inference #}
+            {{- "<|start|>assistant<|channel|>analysis<|message|>" + message.content + "<|end|>" }}
+            {%- set last_tool_call.name = none %}
         {%- else %}
             {#- CoT is dropped during all previous turns, so we never render it for inference #}
             {{- "<|start|>assistant<|channel|>final<|message|>" + message.content + "<|end|>" }}
@@ -324,7 +333,11 @@
             {{- raise_exception("Message has tool role, but there was no previous assistant message with a tool call!") }}
         {%- endif %}
         {{- "<|start|>functions." + last_tool_call.name }}
-        {{- " to=assistant<|channel|>commentary<|message|>" + message.content|tojson + "<|end|>" }}
+        {%- if message.content is string %}
+            {{- " to=assistant<|channel|>commentary<|message|>" + message.content + "<|end|>" }}
+        {%- else %}
+            {{- " to=assistant<|channel|>commentary<|message|>" + message.content|tojson + "<|end|>" }}
+        {%- endif %}
     {%- elif message.role == 'user' -%}
         {{- "<|start|>user<|message|>" + message.content + "<|end|>" }}
     {%- endif -%}
@@ -333,4 +346,5 @@
 {#- Generation prompt #}
 {%- if add_generation_prompt -%}
 <|start|>assistant
-{%- endif -%}
+{%- endif -%}
+{# Copyright 2025-present Unsloth. Apache 2.0 License. Unsloth chat template fixes. Edited from ggml-org & OpenAI #}