On the other hand, this is probably safer

Author: pwilkin

common/chat.cpp

@@ -2785,7 +2785,7 @@ static common_chat_params common_chat_params_init_minimax_m2(
     common_chat_params data;
     data.prompt = apply(tmpl, params);
     data.format = COMMON_CHAT_FORMAT_MINIMAX_M2;
-    if (string_ends_with(data.prompt, "<think>")) {
+    if (string_ends_with(data.prompt, "<think>\n")) { // Minimax adds a new line at the start of reasoning content
         if (!inputs.enable_thinking) {
             data.prompt += "</think>";
         } else {

models/templates/MiniMax-M2.jinja

@@ -149,5 +149,5 @@
 {%- endfor -%}
 {#- Generation prompt -#}
 {%- if add_generation_prompt -%}
-{{- ']~b]ai' ~ '\n' ~ '<think>' }}
+{{- ']~b]ai' ~ '\n' ~ '<think>' ~ '\n' }}
 {%- endif -%}