fix(summary): truncate long bash tool commands

Author: grinev

.env.example

@@ -50,6 +50,10 @@ OPENCODE_MODEL_ID=big-pickle
 # Higher value = fewer Telegram edit requests, lower value = more real-time updates
 # RESPONSE_STREAM_THROTTLE_MS=500
 
+# Maximum displayed length for bash tool commands in Telegram summaries (default: 128)
+# Longer commands are truncated with "..."
+# BASH_TOOL_DISPLAY_MAX_LENGTH=128
+
 # Bot locale: supported locale code (default: en)
 # Supported locales: en, de, es, fr, ru, zh
 # BOT_LOCALE=en

README.md

@@ -163,6 +163,7 @@ When installed via npm, the configuration wizard handles the initial setup. The
 | `PROJECTS_LIST_LIMIT`           | Projects per page in `/projects`                                                                             |    No    | `10`                     |
 | `COMMANDS_LIST_LIMIT`           | Commands per page in `/commands`                                                                             |    No    | `10`                     |
 | `TASK_LIMIT`                    | Maximum number of scheduled tasks that can exist at once                                                     |    No    | `10`                     |
+| `BASH_TOOL_DISPLAY_MAX_LENGTH`  | Maximum displayed length for `bash` tool commands in Telegram summaries; longer commands are truncated       |    No    | `128`                    |
 | `SERVICE_MESSAGES_INTERVAL_SEC` | Service messages interval (thinking + tool calls); keep `>=2` to avoid Telegram rate limits, `0` = immediate |    No    | `5`                      |
 | `HIDE_THINKING_MESSAGES`        | Hide `💭 Thinking...` service messages                                                                       |    No    | `false`                  |
 | `HIDE_TOOL_CALL_MESSAGES`       | Hide tool-call service messages (`💻 bash ...`, `📖 read ...`, etc.)                                         |    No    | `false`                  |

src/config.ts

@@ -99,6 +99,7 @@ export const config = {
     commandsListLimit: getOptionalPositiveIntEnvVar("COMMANDS_LIST_LIMIT", 10),
     taskLimit: getOptionalPositiveIntEnvVar("TASK_LIMIT", 10),
     responseStreamThrottleMs: getOptionalPositiveIntEnvVar("RESPONSE_STREAM_THROTTLE_MS", 500),
+    bashToolDisplayMaxLength: getOptionalPositiveIntEnvVar("BASH_TOOL_DISPLAY_MAX_LENGTH", 128),
     locale: getOptionalLocaleEnvVar("BOT_LOCALE", "en"),
     hideThinkingMessages: getOptionalBooleanEnvVar("HIDE_THINKING_MESSAGES", false),
     hideToolCallMessages: getOptionalBooleanEnvVar("HIDE_TOOL_CALL_MESSAGES", false),

src/summary/formatter.ts

@@ -10,6 +10,18 @@ import { getCurrentProject } from "../settings/manager.js";
 const TELEGRAM_MESSAGE_LIMIT = 4096;
 const MARKDOWN_V2_RESERVED_CHARS = /([_\*\[\]\(\)~`>#+\-=|{}.!\\])/g;
 
+function truncateWithEllipsis(text: string, maxLength: number): string {
+  if (text.length <= maxLength) {
+    return text;
+  }
+
+  if (maxLength <= 3) {
+    return ".".repeat(Math.max(0, maxLength));
+  }
+
+  return `${text.slice(0, maxLength - 3).trimEnd()}...`;
+}
+
 interface SplitTextOptions {
   avoidTrailingMarkdownEscape?: boolean;
 }
@@ -484,7 +496,7 @@ export function formatToolInfo(toolInfo: ToolInfo): string | null {
   }
 
   if (tool === "bash" && input && typeof input.command === "string") {
-    details = input.command;
+    details = truncateWithEllipsis(input.command, config.bot.bashToolDisplayMaxLength);
   }
 
   if (tool === "apply_patch") {

tests/config.test.ts

@@ -134,6 +134,30 @@ describe("config boolean env parsing", () => {
     expect(config.bot.responseStreamThrottleMs).toBe(500);
   });
 
+  it("uses default bash tool display length when env is missing", async () => {
+    vi.stubEnv("BASH_TOOL_DISPLAY_MAX_LENGTH", "");
+
+    const config = await loadConfig();
+
+    expect(config.bot.bashToolDisplayMaxLength).toBe(128);
+  });
+
+  it("parses BASH_TOOL_DISPLAY_MAX_LENGTH as a positive integer", async () => {
+    vi.stubEnv("BASH_TOOL_DISPLAY_MAX_LENGTH", "256");
+
+    const config = await loadConfig();
+
+    expect(config.bot.bashToolDisplayMaxLength).toBe(256);
+  });
+
+  it("falls back to default bash tool display length on invalid value", async () => {
+    vi.stubEnv("BASH_TOOL_DISPLAY_MAX_LENGTH", "zero");
+
+    const config = await loadConfig();
+
+    expect(config.bot.bashToolDisplayMaxLength).toBe(128);
+  });
+
   it("parses TASK_LIMIT as a positive integer", async () => {
     vi.stubEnv("TASK_LIMIT", "25");
 

tests/summary/formatter.test.ts

@@ -192,6 +192,25 @@ describe("summary/formatter", () => {
     expect(text).toBe("💻 Run tests\nbash npm test");
   });
 
+  it("truncates long bash commands with ellipsis", () => {
+    const longCommand = `node -e "${"a".repeat(160)}"`;
+
+    const text = formatToolInfo({
+      sessionId: "s1",
+      messageId: "m4b",
+      callId: "c4b",
+      tool: "bash",
+      state: { status: "completed" } as never,
+      input: {
+        command: longCommand,
+      },
+    });
+
+    expect(text).toMatch(/^💻 bash /);
+    expect(text?.endsWith("...")).toBe(true);
+    expect(text).toHaveLength("💻 bash ".length + 128);
+  });
+
   it("formats apply_patch tool details without dumping full patch", () => {
     const text = formatToolInfo({
       sessionId: "s1",