<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/67897>67897</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            `AlignOperands: DontAlign` mostly ignored for `<<`
        </td>
    </tr>

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

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

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

<pre>
    Hopefully I'm just misunderstanding something here, but I cannot get clang-format (at least v15, v16 and v17) to obey `AlignOperands: DontAlign` for `<<` operators.

Probably related (though not exactly the same scenarios) as:
* https://github.com/llvm/llvm-project/issues/44363; and
* https://github.com/llvm/llvm-project/issues/59797.

Consider this clang-format style:

```
---
Language: Cpp
AlignOperands: DontAlign
...
```

And this example source:

```cpp
    // Incorrectly ignores `AlignOperands: DontAlign`
    qCWarning(lc).noquotex() << a << b << c << d << e << f << g << h << i << j << k << l;

    // Correctly (?) uses ContinuationIndentWidth.
    qCWarning(lc).noquotexx() << a << b << c << d << e << f << g << h << i << j << k << l;

    // Incorrectly ignores `AlignOperands: DontAlign`
    qCWarning(lc).noquotex() << aa << bb << cc << dd << ee << ff << gg << hh << ii << jj << kk;

    // Correctly (?) uses ContinuationIndentWidth.
    qCWarning(lc).noquotexx() << aa << bb << cc << dd << ee << ff << gg << hh << ii << jj << kk;

    // Incorrectly ignores `AlignOperands: DontAlign`
    qCWarning(lc).noquotex() << aaa << bbb << ccc << ddd << eee << fff << ggg << hhh << iii << jjj;

    // Correctly (?) uses ContinuationIndentWidth.
    qCWarning(lc).noquotexx() << aaa << bbb << ccc << ddd << eee << fff << ggg << hhh << iii << jjj;

    // Incorrectly ignores `AlignOperands: DontAlign`
    xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx << aaa << bbb << ccc << ddd << eee << fff << ggg << hhh << iii << jjj;

    // Correctly (?) uses ContinuationIndentWidth.
    xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx << aaa << bbb << ccc << ddd << eee << fff << ggg << hhh << iii << jjj;

    // Correctly (?) uses ContinuationIndentWidth.
    qCWarning(lc) + aaa + bbb + ccc + ddd + eee + fff + ggg + hhh + iii + jjj + kkk + lll;

    // Correctly (?) uses ContinuationIndentWidth.
    qCWarning(lc) >> aaa >> bbb >> ccc >> ddd >> eee >> fff >> ggg >> hhh >> iii >> jjj >> kkk;
```

The clang-formatted output is:

```cpp
  // Incorrectly ignores `AlignOperands: DontAlign`
  qCWarning(lc).noquotex() << a << b << c << d << e << f << g << h << i << j
                           << k << l;

  // Correctly (?) uses ContinuationIndentWidth.
  qCWarning(lc).noquotexx()
      << a << b << c << d << e << f << g << h << i << j << k << l;

  // Incorrectly ignores `AlignOperands: DontAlign`
  qCWarning(lc).noquotex() << aa << bb << cc << dd << ee << ff << gg << hh << ii
                           << jj << kk;

  // Correctly (?) uses ContinuationIndentWidth.
  qCWarning(lc).noquotexx()
      << aa << bb << cc << dd << ee << ff << gg << hh << ii << jj << kk;

  // Incorrectly ignores `AlignOperands: DontAlign`
  qCWarning(lc).noquotex() << aaa << bbb << ccc << ddd << eee << fff << ggg
                           << hhh << iii << jjj;

  // Correctly (?) uses ContinuationIndentWidth.
  qCWarning(lc).noquotexx()
      << aaa << bbb << ccc << ddd << eee << fff << ggg << hhh << iii << jjj;

  // Incorrectly ignores `AlignOperands: DontAlign`
  xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx << aaa << bbb << ccc << ddd << eee
                                             << fff << ggg << hhh << iii << jjj;

  // Correctly (?) uses ContinuationIndentWidth.
  xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
      << aaa << bbb << ccc << ddd << eee << fff << ggg << hhh << iii << jjj;

  // Correctly (?) uses ContinuationIndentWidth.
  qCWarning(lc) + aaa + bbb + ccc + ddd + eee + fff + ggg + hhh + iii + jjj +
      kkk + lll;

  // Correctly (?) uses ContinuationIndentWidth.
  qCWarning(lc) >> aaa >> bbb >> ccc >> ddd >> eee >> fff >> ggg >> hhh >>
      iii >> jjj >> kkk;
```

As you can see (or as I inerpret it), there are plenty of cases where the `<<` operators' operands are being wrapped, then aligned, despite the `AlignOperands: DontAlign`, but if the very first operand exceeds some (not consistent) length then the `DontAlign` is obeyed, and the `ContinuationIndentWidth` is used.

This appears to only affect `<<` operators. For example, `+` and `>>` are not affected, and seems to work as I would expect based on how I read the documentation.

Also, although I use a (real-world) example of `qCWarning(lc).noquote()`, the same happens if the first terminal is just some plain (not long enough) variable name too (the `x{42,43}` examples above).

The output above is from clang-format 17.0.2, but I get the same results (or very similar) with v15 and v16 too (haven't tested any other versions).

Thanks 😄
</pre>
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