[llvm-bugs] [Bug 123030] Add break after assignment to format multiline expressions

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Issue	123030
Summary	Add break after assignment to format multiline expressions
Labels	new issue
Assignees
Reporter	Ren911

    

In our project we want an option to break after first assignment with multiline statements
For example, if _expression_ doesn’t fit on a single line, we add a break after assignment.

### Example 1 

```
anytype result = veerrrryyyyloooonnnnggggvaaarrriiiaabbblleeenameeee + seccconnnddverrryyyloooonnnggvarriaabbleeenammeeee + orjustalotofvariablesinvolvedinoneassignment;
```

The _expression_ above should become [like in this stackoverflow question](https://stackoverflow.com/questions/59235609/clang-format-multiline-variable-assignments)

```
anytype result = 
    veerrrryyyyloooonnnnggggvaaarrriiiaabbblleeenameeee +
    seccconnnddverrryyyloooonnnggvarriaabbleeenammeeee +
    orjustalotofvariablesinvolvedinoneassignment;
```

### Example 2

```
anytype result = some_long_function_with_arguments(arg1, arg2, arg3);
```
should become

```
anytype result = 
    some_long_function_with_arguments(arg1, arg2, arg3);
```

### What exists now in clang-format?

An option _AlwaysBreakBeforeMultilineStrings_  already exists in clang-format, and we want something similar, not only strings.

![Image](https://github.com/user-attachments/assets/6e5ae455-4d55-4b5c-ab38-f3b302a1b2a3)

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