> For the complete documentation index, see [llms.txt](https://docs.sharelogic.com/unifi/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.sharelogic.com/unifi/4.3/troubleshooting/attachments/special-characters-in-attachment-file-names.md).

# Special characters in attachment file names

If you want to send attachments with special characters in their file names, you will need to make sure that you encode the file name first, e.g., using `encodeURI()`. Here's an example of a standard outbound Unifi attachment stream script with the correct escaping in place.

```javascript
(function processStageToRequest(request, stage, transaction, message, bond, scratchpad) {

  // This information would normally come from the AttachmentSender
  var sender = new x_snd_eb.AttachmentSender(transaction, bond);
  sender.next();

  var file_name = sender.attachment_name;
  var mime_type = sender.attachment_type;
  var attach_id = sender.attachment_id;
  var reference = bond.getValue('external_reference');

  //-----------------------
  // Path construction
  //-----------------------
  scratchpad.file_name = encodeURIComponent(file_name);
  scratchpad.reference = encodeURIComponent(reference);

  // ?file_name=${scratchpad.file_name}&reference=${scratchpad.reference}

  //-----------------------
  // Headers construction
  //-----------------------

  // Compose the scratchpad headers and payload
  scratchpad.headers = {
    "Content-Type": mime_type
  };

  //-----------------------
  // Payload construction
  //-----------------------

  // This is the string that triggers attachment streaming outbound
  payload = 'sys_attachment:' + attach_id;

})(request, stage, transaction, message, bond, scratchpad);
```


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.sharelogic.com/unifi/4.3/troubleshooting/attachments/special-characters-in-attachment-file-names.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.