<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/64563>64563</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            clang-format emacs integration doesn't work
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          MikHulk
      </td>
    </tr>
</table>

<pre>
    Hello,

I am using clang15 from FreeBSD. In emacs I am trying to sue clang-format.el integration script. This is an excerpt from my `.emacs`:

```emacs-lisp
(load "/usr/local/llvm15/share/clang/clang-format.el")
(global-set-key (kbd "C-c f") 'clang-format-region)
(global-set-key (kbd "C-c F") 'clang-format-buffer)
(setq clang-format-style-option "llvm")
```

When I try clang-format-region or buffer I get a success message but nothing is done on the buffer.

I tried from command-line it works as expected.

my emacs version is 28.2. 
</pre>
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