From 02d32352d682f4aa92da5b60f81c002802447011 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mikael=20L=C3=B6vqvist?= <mikael.lovqvist.mail@gmail.com>
Date: Tue, 13 Jan 2026 22:20:45 +0100
Subject: [PATCH] Improved system prompt

---
 discord.mjs | 50 +++++++++++++++++++++++++++++++++++---------------
 1 file changed, 35 insertions(+), 15 deletions(-)

diff --git a/discord.mjs b/discord.mjs
index 51c5960..207d6a6 100644
--- a/discord.mjs
+++ b/discord.mjs
@@ -81,21 +81,41 @@ const ALLOW_LIST = new Set([
 /* -------------------------------------------------------------------------- */
 
 function splitDiscordMessage(text) {
-	const MAX = 1900; // buffer
-	const chunks = [];
-	let start = 0;
-	while (start < text.length) {
-		let end = Math.min(start + MAX, text.length);
-		const nl = text.lastIndexOf('\n', end);
-		const sp = text.lastIndexOf(' ', end);
-		if (nl > start) end = nl + 1;
-		else if (sp > start) end = sp + 1;
-		chunks.push(text.slice(start, end));
-		start = end;
-	}
-	return chunks;
-}
+  const MAX = 1900;        // maximum payload size
+  const MIN = 100;         // avoid tiny chunks
+  const chunks = [];
+  let start = 0;
 
+  while (start < text.length) {
+    let end = Math.min(start + MAX, text.length);
+
+    // Try to break on a newline first, then on a space
+    if (end < text.length) {
+      const nl = text.lastIndexOf('\n', end);
+      const sp = text.lastIndexOf(' ', end);
+      const splitPos = Math.max(nl, sp);
+      if (splitPos > start) end = splitPos + 1; // keep the delimiter
+    }
+
+    // If the chunk is too short, pull in the next delimiter
+    if (end - start < MIN && end < text.length) {
+      const nextNL = text.indexOf('\n', end);
+      const nextSP = text.indexOf(' ', end);
+      const nextPos = Math.min(
+        nextNL === -1 ? Infinity : nextNL,
+        nextSP === -1 ? Infinity : nextSP
+      );
+      if (nextPos !== Infinity && nextPos < text.length) {
+        end = nextPos + 1;
+      }
+    }
+
+    chunks.push(text.slice(start, end));
+    start = end;
+  }
+
+  return chunks;
+}
 /* -------------------------------------------------------------------------- */
 /*  6️⃣  Core message handler                                               */
 /* -------------------------------------------------------------------------- */
@@ -121,7 +141,7 @@ async function handleMessage(msg) {
 	if (!msg.content.includes(mention)) return; // not a mention
 
 	/* 5a  Build the system prompt (Silicon Duck persona) */
-	const systemPrompt = `You are Silicon Duck, a helpful, cheerful, and generally excited creative Discord bot in the server 'Mikael Lövqvist's shenanigans'. You do NOT retain any history across messages. Your tag is <@${client.user.id}>, do not tag yourself in replies. The current channel is '${msg.channel.name}'. The user is ${msg.author.username} with tag <@${msg.author.id}>. You should not produce code examples unless explicitly asked. Do not make markdown tables, discord does not support those. You are running the model ${MODEL} using Ollama and OpenWebUI. Dial back emoji use.`;
+	const systemPrompt = `You are Silicon Duck, a helpful, cheerful, and generally excited creative Discord bot in the server 'Mikael Lövqvist's shenanigans'. You do NOT retain any history across messages. Your tag is <@${client.user.id}>, do not tag yourself in replies. The current channel is '${msg.channel.name}'. The user is ${msg.author.username} with tag <@${msg.author.id}>. You should not produce code examples unless explicitly asked. Do not make markdown tables, discord does not support those. You are running the model ${MODEL} using Ollama and OpenWebUI. Dial back emoji use. <@1108665021048819762> Use <:siduck:1103592588658868314> when you need to express yourself as an emoji. That's your avatar. It is a duck carved out of semiconductor grade silicon.`;
 
 	/* 5b  Check for special commands that use PERMISSIONS */
 	if (msg.content.startsWith('!create ')) {