From 7187df509fe9cc506695a1036b840e03eeb25cff Mon Sep 17 00:00:00 2001
From: Grail Finder <wohilas@gmail.com>
Date: Wed, 4 Feb 2026 12:47:54 +0300
Subject: Enha: stricter stop string

---
 bot.go           | 20 --------------------
 llm.go           |  6 +++---
 models/models.go |  9 ++++++---
 3 files changed, 9 insertions(+), 26 deletions(-)

diff --git a/bot.go b/bot.go
index d195431..c396d07 100644
--- a/bot.go
+++ b/bot.go
@@ -861,18 +861,7 @@ out:
 		newMsg = processMessageTag(newMsg)
 		chatBody.Messages = append(chatBody.Messages, newMsg)
 	}
-	logger.Debug("chatRound: before cleanChatBody", "messages_before_clean", len(chatBody.Messages))
-	for i, msg := range chatBody.Messages {
-		logger.Debug("chatRound: before cleaning", "index", i,
-			"role", msg.Role, "content_len", len(msg.Content),
-			"has_content", msg.HasContent(), "tool_call_id", msg.ToolCallID)
-	}
-	// // Clean null/empty messages to prevent API issues with endpoints like llama.cpp jinja template
 	cleanChatBody()
-	logger.Debug("chatRound: after cleanChatBody", "messages_after_clean", len(chatBody.Messages))
-	for i, msg := range chatBody.Messages {
-		logger.Debug("chatRound: after cleaning", "index", i, "role", msg.Role, "content_len", len(msg.Content), "has_content", msg.HasContent(), "tool_call_id", msg.ToolCallID)
-	}
 	refreshChatDisplay()
 	updateStatusLine()
 	// bot msg is done;
@@ -901,19 +890,10 @@ func cleanChatBody() {
 	if chatBody == nil || chatBody.Messages == nil {
 		return
 	}
-	originalLen := len(chatBody.Messages)
-	logger.Debug("cleanChatBody: before cleaning", "message_count", originalLen)
-	for i, msg := range chatBody.Messages {
-		logger.Debug("cleanChatBody: before clean", "index", i, "role", msg.Role, "content_len", len(msg.Content), "has_content", msg.HasContent(), "tool_call_id", msg.ToolCallID)
-	}
 	// Tool request cleaning is now configurable via AutoCleanToolCallsFromCtx (default false)
 	// /completion msg where part meant for user and other part tool call
 	chatBody.Messages = cleanToolCalls(chatBody.Messages)
 	chatBody.Messages = consolidateAssistantMessages(chatBody.Messages)
-	logger.Debug("cleanChatBody: after cleaning", "original_len", originalLen, "new_len", len(chatBody.Messages))
-	for i, msg := range chatBody.Messages {
-		logger.Debug("cleanChatBody: after clean", "index", i, "role", msg.Role, "content_len", len(msg.Content), "has_content", msg.HasContent(), "tool_call_id", msg.ToolCallID)
-	}
 }
 
 // convertJSONToMapStringString unmarshals JSON into map[string]interface{} and converts all values to strings.
diff --git a/llm.go b/llm.go
index 30fc0ec..95de1d8 100644
--- a/llm.go
+++ b/llm.go
@@ -207,7 +207,7 @@ func (lcp LCPCompletion) FormMsg(msg, role string, resume bool) (io.Reader, erro
 	logger.Debug("checking prompt for /completion", "tool_use", cfg.ToolUse,
 		"msg", msg, "resume", resume, "prompt", prompt, "multimodal_data_count", len(multimodalData))
 	payload := models.NewLCPReq(prompt, chatBody.Model, multimodalData,
-		defaultLCPProps, chatBody.MakeStopSliceExcluding(botPersona, listChatRoles()))
+		defaultLCPProps, chatBody.MakeStopSliceExcluding("", listChatRoles()))
 	data, err := json.Marshal(payload)
 	if err != nil {
 		logger.Error("failed to form a msg", "error", err)
@@ -444,7 +444,7 @@ func (ds DeepSeekerCompletion) FormMsg(msg, role string, resume bool) (io.Reader
 		"msg", msg, "resume", resume, "prompt", prompt)
 	payload := models.NewDSCompletionReq(prompt, chatBody.Model,
 		defaultLCPProps["temp"],
-		chatBody.MakeStopSliceExcluding(botPersona, listChatRoles()))
+		chatBody.MakeStopSliceExcluding("", listChatRoles()))
 	data, err := json.Marshal(payload)
 	if err != nil {
 		logger.Error("failed to form a msg", "error", err)
@@ -604,7 +604,7 @@ func (or OpenRouterCompletion) FormMsg(msg, role string, resume bool) (io.Reader
 	if cfg.ThinkUse && !cfg.ToolUse {
 		prompt += "<think>"
 	}
-	stopSlice := chatBody.MakeStopSliceExcluding(botPersona, listChatRoles())
+	stopSlice := chatBody.MakeStopSliceExcluding("", listChatRoles())
 	logger.Debug("checking prompt for /completion", "tool_use", cfg.ToolUse,
 		"msg", msg, "resume", resume, "prompt", prompt, "stop_strings", stopSlice)
 	payload := models.NewOpenRouterCompletionReq(chatBody.Model, prompt,
diff --git a/models/models.go b/models/models.go
index 340cb42..e99832a 100644
--- a/models/models.go
+++ b/models/models.go
@@ -382,9 +382,12 @@ func (cb *ChatBody) MakeStopSliceExcluding(
 			continue
 		}
 		// Add multiple variations to catch different formatting
-		ss = append(ss, role+":\n") // Most common: role with newline
-		ss = append(ss, role+":")   // Role with colon but no newline
-		ss = append(ss, role+": ")  // Role with colon and space
+		ss = append(ss, role+":\n")   // Most common: role with newline
+		ss = append(ss, role+":")     // Role with colon but no newline
+		ss = append(ss, role+": ")    // Role with colon and single space
+		ss = append(ss, role+":  ")   // Role with colon and double space (common tokenization)
+		ss = append(ss, role+":  \n") // Role with colon and double space (common tokenization)
+		ss = append(ss, role+":   ")  // Role with colon and triple space
 	}
 	return ss
 }
-- 
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