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fix: strip think tags when model emits leading whitespace before <think> (#327)

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Remove ^ anchor from think/Gemma regexes in ui.js; trimStart() before startsWith checks in messages.js streaming path. Fixes MiniMax M2.7 and any model emitting leading newlines before <think>. 10 new tests, 768 total.
This commit is contained in:
nesquena-hermes
2026-04-12 14:07:00 -07:00
committed by GitHub
parent 7552cd3e9b
commit 9c44d0cf3e
5 changed files with 132 additions and 10 deletions
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11
static/ui.js
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@@ -801,19 +801,20 @@ function renderMessages(){
if(!thinkingText && m.reasoning){
thinkingText=m.reasoning;
}
// Parse inline thinking tags from plain text: <think>...</think> (DeepSeek, QwQ, etc.)
// Parse inline thinking tags from plain text: <think>...</think> (DeepSeek, QwQ, MiniMax, etc.)
// and Gemma 4 channel tokens: <|channel>thought\n...<channel|>
// Note: no ^ anchor — some models emit leading whitespace/newlines before <think>.
if(!thinkingText && typeof content==='string'){
const thinkMatch=content.match(/^<think>([\s\S]*?)<\/think>\s*/);
const thinkMatch=content.match(/<think>([\s\S]*?)<\/think>/);
if(thinkMatch){
thinkingText=thinkMatch[1].trim();
content=content.slice(thinkMatch[0].length);
content=content.replace(/<think>[\s\S]*?<\/think>\s*/,'').trimStart();
}
if(!thinkingText){
const gemmaMatch=content.match(/^<\|channel>thought\n([\s\S]*?)<channel\|>\s*/);
const gemmaMatch=content.match(/<\|channel>thought\n([\s\S]*?)<channel\|>/);
if(gemmaMatch){
thinkingText=gemmaMatch[1].trim();
content=content.slice(gemmaMatch[0].length);
content=content.replace(/<\|channel>thought\n[\s\S]*?<channel\|>\s*/,'').trimStart();
}
}
}