fix: suppress Mattermost quoted reasoning replies (#69927) (thanks @lawrence3699)

extensions/mattermost/src/mattermost/monitor.test.ts

@@ -257,7 +257,7 @@ describe("deliverMattermostReplyWithDraftPreview", () => {
     const deliverFinal = vi.fn(async () => {});
 
     await deliverMattermostReplyWithDraftPreview({
-      payload: { text: "  \n Reasoning:\n_hidden_" } as never,
+      payload: { text: "  \n > Reasoning:\n> _hidden_" } as never,
       info: { kind: "final" },
       client: createMattermostClientMock(),
       draftStream,

extensions/mattermost/src/mattermost/monitor.ts

@@ -1,5 +1,6 @@
 import { deliverFinalizableDraftPreview } from "openclaw/plugin-sdk/channel-lifecycle";
 import { createClaimableDedupe, type ClaimableDedupe } from "openclaw/plugin-sdk/persistent-dedupe";
+import { isReasoningReplyPayload } from "openclaw/plugin-sdk/reply-payload";
 import { isPrivateNetworkOptInEnabled } from "openclaw/plugin-sdk/ssrf-runtime";
 import {
   normalizeLowercaseStringOrEmpty,
@@ -55,10 +56,7 @@ import {
   type MattermostWebSocketFactory,
 } from "./monitor-websocket.js";
 import { runWithReconnect } from "./reconnect.js";
-import {
-  deliverMattermostReplyPayload,
-  shouldSuppressMattermostReasoningReply,
-} from "./reply-delivery.js";
+import { deliverMattermostReplyPayload } from "./reply-delivery.js";
 import type {
   ChannelAccountSnapshot,
   ChatType,
@@ -292,7 +290,7 @@ type MattermostDraftPreviewDeliverParams = {
 export async function deliverMattermostReplyWithDraftPreview(
   params: MattermostDraftPreviewDeliverParams,
 ): Promise<void> {
-  if (shouldSuppressMattermostReasoningReply(params.payload)) {
+  if (isReasoningReplyPayload(params.payload)) {
     return;
   }
 

extensions/mattermost/src/mattermost/reply-delivery.test.ts

@@ -80,6 +80,27 @@ describe("deliverMattermostReplyPayload", () => {
     expect(sendMessage).not.toHaveBeenCalled();
   });
 
+  it("suppresses reasoning payloads formatted as a Mattermost blockquote", async () => {
+    const sendMessage = vi.fn(async () => undefined);
+    const cfg = {} satisfies OpenClawConfig;
+    const core = createReplyDeliveryCore();
+
+    await deliverMattermostReplyPayload({
+      core,
+      cfg,
+      payload: { text: "> Reasoning:\n> _hidden_" },
+      to: "channel:town-square",
+      accountId: "default",
+      agentId: "agent-1",
+      replyToId: "root-post",
+      textLimit: 4000,
+      tableMode: "off",
+      sendMessage,
+    });
+
+    expect(sendMessage).not.toHaveBeenCalled();
+  });
+
   it("does not suppress messages that mention Reasoning: mid-text", async () => {
     const sendMessage = vi.fn(async () => undefined);
     const cfg = {} satisfies OpenClawConfig;

extensions/mattermost/src/mattermost/reply-delivery.ts

@@ -1,8 +1,8 @@
 import {
   deliverTextOrMediaReply,
+  isReasoningReplyPayload,
   resolveSendableOutboundReplyParts,
 } from "openclaw/plugin-sdk/reply-payload";
-import { normalizeLowercaseStringOrEmpty } from "openclaw/plugin-sdk/text-runtime";
 import {
   getAgentScopedMediaLocalRoots,
   type OpenClawConfig,
@@ -24,19 +24,6 @@ type SendMattermostMessage = (
   },
 ) => Promise<unknown>;
 
-const REASONING_PREFIX = "reasoning:";
-
-export function shouldSuppressMattermostReasoningReply(payload: ReplyPayload): boolean {
-  if (payload.isReasoning === true) {
-    return true;
-  }
-  const text = payload.text;
-  if (typeof text !== "string") {
-    return false;
-  }
-  return normalizeLowercaseStringOrEmpty(text.trimStart()).startsWith(REASONING_PREFIX);
-}
-
 export async function deliverMattermostReplyPayload(params: {
   core: PluginRuntime;
   cfg: OpenClawConfig;
@@ -49,7 +36,7 @@ export async function deliverMattermostReplyPayload(params: {
   tableMode: MarkdownTableMode;
   sendMessage: SendMattermostMessage;
 }): Promise<void> {
-  if (shouldSuppressMattermostReasoningReply(params.payload)) {
+  if (isReasoningReplyPayload(params.payload)) {
     return;
   }
   const reply = resolveSendableOutboundReplyParts(params.payload, {

extensions/whatsapp/src/auto-reply/deliver-reply.test.ts

@@ -101,6 +101,10 @@ describe("deliverWebReply", () => {
     await expectReplySuppressed({ text: "   \n Reasoning:\n_hidden_" });
   });
 
+  it("suppresses payloads that start with a quoted reasoning prefix", async () => {
+    await expectReplySuppressed({ text: " > Reasoning:\n> _hidden_" });
+  });
+
   it("does not suppress messages that mention Reasoning: mid-text", async () => {
     const msg = makeMsg();
 

extensions/whatsapp/src/auto-reply/deliver-reply.ts

@@ -2,11 +2,11 @@ import type { MarkdownTableMode } from "openclaw/plugin-sdk/config-runtime";
 import { chunkMarkdownTextWithMode, type ChunkMode } from "openclaw/plugin-sdk/reply-chunking";
 import type { ReplyPayload } from "openclaw/plugin-sdk/reply-chunking";
 import {
+  isReasoningReplyPayload,
   resolveOutboundMediaUrls,
   sendMediaWithLeadingCaption,
 } from "openclaw/plugin-sdk/reply-payload";
 import { logVerbose, shouldLogVerbose } from "openclaw/plugin-sdk/runtime-env";
-import { normalizeLowercaseStringOrEmpty } from "openclaw/plugin-sdk/text-runtime";
 import { loadWebMedia } from "../media.js";
 import { newConnectionId } from "../reconnect.js";
 import { formatError } from "../session.js";
@@ -16,19 +16,6 @@ import { whatsappOutboundLog } from "./loggers.js";
 import type { WebInboundMsg } from "./types.js";
 import { elide } from "./util.js";
 
-const REASONING_PREFIX = "reasoning:";
-
-function shouldSuppressReasoningReply(payload: ReplyPayload): boolean {
-  if (payload.isReasoning === true) {
-    return true;
-  }
-  const text = payload.text;
-  if (typeof text !== "string") {
-    return false;
-  }
-  return normalizeLowercaseStringOrEmpty(text.trimStart()).startsWith(REASONING_PREFIX);
-}
-
 export async function deliverWebReply(params: {
   replyResult: ReplyPayload;
   msg: WebInboundMsg;
@@ -46,7 +33,7 @@ export async function deliverWebReply(params: {
 }) {
   const { replyResult, msg, maxMediaBytes, textLimit, replyLogger, connectionId, skipLog } = params;
   const replyStarted = Date.now();
-  if (shouldSuppressReasoningReply(replyResult)) {
+  if (isReasoningReplyPayload(replyResult)) {
     whatsappOutboundLog.debug(`Suppressed reasoning payload to ${msg.from}`);
     return;
   }