<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/59522>59522</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [clang-format] C++20 Lambda `SpacesInSquareBrackets` Failure Case with Template Non-Type Parameter Pack
        </td>
    </tr>

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

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

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

<pre>
    I am having an issue with the `clang-format` `SpacesInSquareBrackets` option:
```cpp
constexpr int i {};
[ &i]< size_t... > {};
```

It appears this is an edge failure case:
```cpp
[ & ]< size_t... > {};
```
```cpp
constexpr int i {};
[ &i ]< size_t > {};
```
```cpp
constexpr int i {};
[ &i ]< typename... T > {};
```

</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJy8k09r3DwQxj_N-DKskcf_sgcf4mwWAi8vgeRexvKsrcaWVUlOmn764s2WEgqh5FAwFhpp5nke-IlDMIMVaaBsoTwkvMZx8c1tGK08Jd3SvzZ3yDOO_GzsgGzRhLAKvpg4YhwFoVJ6YjvsToufOUKlttKDYy3hzj58W9lL61k_SQzb4eKiWSzk16AOoK6hUm-fdu6tohcbonx3Ho2NaBDqFuoD5O2loWwRqDJQHiC_wWB-yJeYpilCfvvH3V_DL9vz_y4iOyfsA8bRBDRhSyX9IHhiM61eUHOQDxxeLOBnLHw27nuxf6EUX51YnmUL9vgXgknf5P0-33MiTVbVmcqviqJKxoZrpXQhXV0XVKusv-pz3nd9rmvSJ-l1YhpSRBllRVaTKqq0olNPQlWtMi1FdQWFkpnNlE7T85wufkjOEDblviRKJu5kCmeAiay8vBEKRBvPvtl6dt06BCjUZEIMv6dEE6cz-e8ILg94A9QCtaTwP567nj9G-njB5obD5WE8yuwmjoL_L3b3-OoE79nzLFE83rN-SlY_NWOMLmyY0RHoOJg4rl2qlxnouDm8LDvnl6-iI9DxnCsAHc-5fwYAAP__-LsQ7A">