diff --git a/package-lock.json b/package-lock.json
index 4c74e04..bba36f4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -225,9 +225,9 @@
       }
     },
     "node_modules/@cloudrac3r/discord-markdown": {
-      "version": "2.6.7",
-      "resolved": "https://registry.npmjs.org/@cloudrac3r/discord-markdown/-/discord-markdown-2.6.7.tgz",
-      "integrity": "sha512-bWLmBYWaNEDcQfZHDz4jaAxLKA9161ruEnHo3ms6kfRw8uYku/Uz7U1xTmQ2dQF/q1PiuBvM9I37pLiotlQj8A==",
+      "version": "2.6.8",
+      "resolved": "https://registry.npmjs.org/@cloudrac3r/discord-markdown/-/discord-markdown-2.6.8.tgz",
+      "integrity": "sha512-ZrSimHqmLqXR+W3U1n6ge6poAjmQaMzXyWrTkT36znrgKhfuQAYxLBtKTf7m+cmr3VlaDVM2P+iPdSeTeaM0qg==",
       "license": "MIT",
       "dependencies": {
         "simple-markdown": "^0.7.3"
@@ -1210,9 +1210,9 @@
       "dev": true
     },
     "node_modules/@types/node": {
-      "version": "22.19.0",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-22.19.0.tgz",
-      "integrity": "sha512-xpr/lmLPQEj+TUnHmR+Ab91/glhJvsqcjB+yY0Ix9GO70H6Lb4FHH5GeqdOE5btAx7eIMwuHkp4H2MSkLcqWbA==",
+      "version": "22.19.1",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-22.19.1.tgz",
+      "integrity": "sha512-LCCV0HdSZZZb34qifBsyWlUmok6W7ouER+oQIGBScS8EsZsQbrtFTUrDX4hOl+CS6p7cnNC4td+qrSVGSCTUfQ==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
@@ -1713,9 +1713,9 @@
       }
     },
     "node_modules/discord-api-types": {
-      "version": "0.38.32",
-      "resolved": "https://registry.npmjs.org/discord-api-types/-/discord-api-types-0.38.32.tgz",
-      "integrity": "sha512-UhIqkFuUVwBzejLPPWF18qixYPucMf718RnGh1NxZYNS7czXUmcUsWWkzWR7lRWj5pjfj4LwrnN9McvpfLvGqQ==",
+      "version": "0.38.33",
+      "resolved": "https://registry.npmjs.org/discord-api-types/-/discord-api-types-0.38.33.tgz",
+      "integrity": "sha512-oau1V7OzrNX8yNi+DfQpoLZCNCv7cTFmvPKwHfMrA/tewsO6iQKrMTzA7pa3iBSj0fED6NlklJ/1B/cC1kI08Q==",
       "license": "MIT",
       "workspaces": [
         "scripts/actions/documentation"
diff --git a/scripts/text-probability.js b/scripts/text-probability.js
new file mode 100644
index 0000000..cc93405
--- /dev/null
+++ b/scripts/text-probability.js
@@ -0,0 +1,65 @@
+// @ts-check
+
+const Ty = require("../src/types")
+const fs = require("fs")
+const domino = require("domino")
+const repl = require("repl")
+
+const pres = (() => {
+	const pres = []
+	for (const file of process.argv.slice(2)) {
+		const data = JSON.parse(fs.readFileSync(file, "utf8"))
+		/** @type {Ty.Event.Outer<{msgtype?: string}>[]} */
+		const events = data.messages
+		for (const event of events) {
+			if (event.type !== "m.room.message" || event.content.msgtype !== "m.text") continue
+			/** @type {Ty.Event.M_Room_Message} */ // @ts-ignore
+			const content = event.content
+			if (content.format !== "org.matrix.custom.html") continue
+			if (!content.formatted_body) continue
+
+			const document = domino.createDocument(content.formatted_body)
+			// @ts-ignore
+			for (const pre of document.querySelectorAll("pre").cache) {
+				const content = pre.textContent
+				if (content.length < 100) continue
+				pres.push(content)
+			}
+		}
+	}
+	return pres
+})()
+
+// @ts-ignore
+global.gc()
+
+/** @param {string} text */
+function probablyFixedWidthIntended(text) {
+	// if internal spaces are used, seems like they want a fixed-width font
+	if (text.match(/[^ ] {3,}[^ ]/)) return true
+	// if characters from Unicode General_Category "Symbol, other" are used, seems like they're doing ascii art and they want a fixed-width font
+	if (text.match(/\p{So}/v)) return true
+	// check start of line indentation
+	let indents = new Set()
+	for (const line of text.trimEnd().split("\n")) {
+		indents.add(line.match(/^ */)?.[0].length || 0)
+		// if there are more than 3 different indents (counting 0) then it's code
+		if (indents.size >= 3) return true
+	}
+	// if everything is indented then it's code
+	if (!indents.has(0)) return true
+	// if there is a high proportion of symbols then it's code (this filter works remarkably well on its own)
+	if ([...text.matchAll(/[\\`~;+|<>%$@*&"'=(){}[\]_^]|\.[a-zA-Z]|[a-z][A-Z]/g)].length / text.length >= 0.04) return true
+	return false
+}
+
+Object.assign(repl.start().context, {pres, probablyFixedWidthIntended})
+
+/*
+if it has a lot of symbols then it's code
+if it has >=3 levels of indentation then it's code
+if it is all indented then it's code
+if it has many spaces in a row in the middle then it's ascii art
+if it has many non-latin characters then it's language
+-> except if they are ascii art characters e.g. ⣿⣿⡇⢸⣿⠃ then it's ascii art
+*/
diff --git a/src/d2m/actions/create-room.js b/src/d2m/actions/create-room.js
index ff5782d..61e79f3 100644
--- a/src/d2m/actions/create-room.js
+++ b/src/d2m/actions/create-room.js
@@ -358,7 +358,7 @@ function assertExistsOrAutocreatable(channel, guildID) {
  * @returns {Promise<string>} room ID
  */
 async function _syncRoom(channelID, shouldActuallySync) {
-	/** @ts-ignore @type {DiscordTypes.APIGuildChannel} */
+	/** @ts-ignore @type {DiscordTypes.APIGuildTextChannel} */
 	const channel = discord.channels.get(channelID)
 	assert.ok(channel)
 	const guild = channelToGuild(channel)