<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/84578>84578</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [clang-format] BreakAfterReturnType mishandles Obj-C keywords interface/implementation
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            clang-format
      </td>
    </tr>

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

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

<pre>
    Input:
```
@interface NSCoder (TestCoder)
@end

@implementation NSCoder (TestCoder)
@end
```

Output:
```
@interface
NSCoder (TestCoder)
@end

@implementation
NSCoder (TestCoder)
@end
```
</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJykks9unDAQxp_GXNCuvIP5d_BhkxVSL43U5gUGPICzxiB7aLVvX0G2idJTo0gIeyx_n3_jzxijHTyRFvmDyC8JrjzOQeOIjB6vSTubm_7ml5VFdhbyIuRZFPL-vZZKWs8Ueuwo_f7zcTYUUgHVM0XeCwH1207y5j5_006Lo4k8I9vZf8LgH4r9_7Tyf5K-rnwV97Muf3kSozNTZzUmpE-lrOusKJRKRg1FUeZ1ZYqq7XolK1lnpypTWW4klSVWidUgQclMVgCgpDqqrj8hth3K1kAm6-28Ca07OvdrOs5hSGyMK-lK5WWVOGzJxT1sgM6hHw79HCZkAbDFH_QmO7TrEIWSzkaO70Zs2e0P5YMwv6QPgfB67pnCD-I1-OfbQulk44jeOIrpU_tyeEyvdPs9BxPT9xCg-XifyRqcHpmXuGUIjYBmsDyu7bGbJwHNhnIfDkuYX6jjzWNrMApo9h7_BAAA___ke9hq">