Update chat_template.jinja

chat_template.jinja

@@ -1,6 +1,10 @@
+{#- Unsloth template fixes #}
 {%- set thinking_prompt = 'You are a deep thinking AI, you may use extremely long chains of thought to deeply consider the problem and deliberate with yourself via systematic reasoning processes to help come to a correct solution prior to answering. You should enclose your thoughts and internal monologue inside <think> </think> tags, and then provide your solution or response to the problem.' %}
 {%- set standard_prompt = 'You are Hermes, created by Nous Research.' %}
-{%- if not thinking is defined %}{% set thinking = false %}{% endif %}
+{%- if enable_thinking is defined and enable_thinking is false %}{% set thinking = false %}
+{%- elif enable_thinking is defined and enable_thinking is true %}{% set thinking = true %}
+{%- elif not thinking is defined %}{% set thinking = false %}
+{% endif %}
 {%- if not keep_cots is defined %}{% set keep_cots = false %}{% endif %}
 {%- if thinking %}{%- set system_prompt = thinking_prompt %}{%- else %}{%- set system_prompt = standard_prompt %}{%- endif %}
 {%- if tools %}
@@ -32,7 +36,9 @@
             {%- set content = message['content'] -%}
             {%- if thinking %}
                 {%- if not keep_cots %}
-                    {%- set content = '<think> </think>' + content.split('</think>', 1)[1] -%}
+                    {%- set splitted = content.split('</think>') -%}
+                    {%- set second_part = splitted[1:] | join('</think>') -%}
+                    {%- set content = '<think> </think>' + second_part -%}
                 {%- endif %}
             {%- endif %}
             {{- '\n' + content + '<|eot_id|>' }}
@@ -43,7 +49,9 @@
             {%- set content = message['content'] -%}
             {%- if thinking %}
                 {%- if not keep_cots %}
-                    {%- set content = '<think> </think>' + content.split('</think>', 1)[1] -%}
+                    {%- set splitted = content.split('</think>') -%}
+                    {%- set second_part = splitted[1:] | join('</think>') -%}
+                    {%- set content = '<think> </think>' + second_part -%}
                 {%- endif %}
             {%- endif %}
             {{- '\n' + content }}
@@ -74,3 +82,4 @@
 {%- if add_generation_prompt %}
     {{- '<|start_header_id|>assistant<|end_header_id|>\n\n' }}
 {%- endif %}
+{#- Copyright 2025-present Unsloth. Apache 2.0 License. #}