<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/121723>121723</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [clang-format] [C++20] [Modules] Unexpected/Uncontrollable indentation for export block
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            clang-format,
            clang:modules
      </td>
    </tr>

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

    <tr>
      <th>Reporter</th>
      <td>
          ChuanqiXu9
      </td>
    </tr>
</table>

<pre>
    Reproducer:

```
export module a;
export {
int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(int xxxxxxxxxxxxxxxxxxxxxxx, int xxxxxxxxxxxxxxx);
}
```

after format we got:

```
export module a;
export {
  int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(
      int xxxxxxxxxxxxxxxxxxxxxxx, int xxxxxxxxxxxxxxx);
}
```

But we don't want the indentation.  Or we hope we can control the behavior by an option like `NamespaceIndentation` (https://clang.llvm.org/docs/ClangFormatStyleOptions.html#namespaceindentation)
</pre>
<img width="1" height="1" alt="" src="http://email.email.llvm.org/o/eJysU01vnDAQ_TXDxcrKDAssBw77IaQe2kitIvVqzABujE1tk49_X5mQplvl0qgjS5bHnud5M2-E92owRDXkJ8gviVjCaF19HhdhfqrvS5W0tnuuv9LsbLdIcpAdga-r4NviR3qarQtsst2iiQnITm9OKONBmcDEPxngIQY9vW-AZ_bONWD18jmUl79yBH4UfSDHeusmEdgjscGGD9Jh7EOE1sho_5vZaVkJddYAloE9ChNYGIkp05EJIihrdozduvhotDPFXQrDpDXBWb2-bWkUD8o61j4zYZidYxTT6p4YFPyLmMjPQtKnN0goOAM8jCHMPhYSG8BGamGGndYP0866AbDprPSAzTn6m7X238KzptsV3-_GMGnAzLzi_5EyYJV0ddZVWSUSqtMyK1I8pIjJWLcSEateYtGXshJdl1dFRlWZUynyfl8mqkaOOU95wdP9YY-7TmK_rw7FIU97mVcC9pwmofTvXBPl_UJ1immJWaJFS9qvc4G4krp5UQ4gAp5fnZAdX3Tioz-_JK6OeDftMnjYc6188G8_BBX0OmtXgPmFQX46A54AT8i38-cNNr-wO0NPM8lAHWBzZ7auadHqqxZHabNNp6228j5ZnK6v2zOoMC7tTtoJsIl5bdvN7OwPkgGwWcsQW7ZV4qHGXwEAAP__WWtdLA">