clang-format AlignArrayOfStructures has bad behavior on None

[EthanRutherford]

AlignArrayOfStructures: None behaves bizarrely, doing more "alignment" IMO than Left or Right does.

None:

const std::vector<Vertex> vertices = { { { -0.5f, -0.5f }, { 1.0f, 0.0f, 0.0f } },
                                     { { 0.5f, -0.5f }, { 0.0f, 1.0f, 0.0f } },
                                     { { 0.5f, 0.5f }, { 0.0f, 0.0f, 1.0f } },
                                     { { -0.5f, 0.5f }, { 1.0f, 1.0f, 1.0f } } };

Left:

const std::vector<Vertex> vertices = {
    { { -0.5f, -0.5f }, { 1.0f, 0.0f, 0.0f } },
    { { 0.5f, -0.5f },  { 0.0f, 1.0f, 0.0f } },
    { { 0.5f, 0.5f },   { 0.0f, 0.0f, 1.0f } },
    { { -0.5f, 0.5f },  { 1.0f, 1.0f, 1.0f } }
};

Expected behavior (but not possible with current clang-format, as far as I can tell):

const std::vector<Vertex> vertices = {
    { { -0.5f, -0.5f }, { 1.0f, 0.0f, 0.0f } },
    { { 0.5f, -0.5f }, { 0.0f, 1.0f, 0.0f } },
    { { 0.5f, 0.5f }, { 0.0f, 0.0f, 1.0f } },
    { { -0.5f, 0.5f }, { 1.0f, 1.0f, 1.0f } }
};

Additionally, in my actual setup where I use tabs, the alignment is totally broken.
For some reason it tries to use a mix of tabs and spaces to do the alignment, and gets it completely wrong. Not sure what it's expecting this tab to align with, but tabSize is set to 4 in my config.

So, all three possible options for this setting are producing undesireable results.

[llvmbot]

@llvm/issue-subscribers-clang-format

Author: Ethan Rutherford (EthanRutherford)

`AlignArrayOfStructures: None` behaves bizarrely, doing more "alignment" IMO than Left or Right does.

None:

const std::vector<Vertex> vertices = { { { -0.5f, -0.5f }, { 1.0f, 0.0f, 0.0f } },
                                     { { 0.5f, -0.5f }, { 0.0f, 1.0f, 0.0f } },
                                     { { 0.5f, 0.5f }, { 0.0f, 0.0f, 1.0f } },
                                     { { -0.5f, 0.5f }, { 1.0f, 1.0f, 1.0f } } };

Left:

const std::vector<Vertex> vertices = {
    { { -0.5f, -0.5f }, { 1.0f, 0.0f, 0.0f } },
    { { 0.5f, -0.5f },  { 0.0f, 1.0f, 0.0f } },
    { { 0.5f, 0.5f },   { 0.0f, 0.0f, 1.0f } },
    { { -0.5f, 0.5f },  { 1.0f, 1.0f, 1.0f } }
};

Expected behavior (but not possible with current clang-format, as far as I can tell):

const std::vector<Vertex> vertices = {
    { { -0.5f, -0.5f }, { 1.0f, 0.0f, 0.0f } },
    { { 0.5f, -0.5f }, { 0.0f, 1.0f, 0.0f } },
    { { 0.5f, 0.5f }, { 0.0f, 0.0f, 1.0f } },
    { { -0.5f, 0.5f }, { 1.0f, 1.0f, 1.0f } }
};

Additionally, in my actual setup where I use tabs, the alignment is totally broken.
For some reason it tries to use a mix of tabs and spaces to do the alignment, and gets it completely wrong. Not sure what it's expecting this tab to align with, but tabSize is set to 4 in my config.

<img width="1005" height="306" alt="Image" src="https://github.com/user-attachments/assets/e25b6869-f4d4-4b33-8189-e1d8e56bfa48" />

So, all three possible options for this setting are producing undesireable results.