clang-format - Break each argument to new line

[byk4]

Hi I am new to .clang-format.
I want each argument on new line ex.

int
foo(
    int x, 
    int b)
{
	return (x + b);
}

but currently I am getting:

int
foo(int x, int b)
{
	return (x + b);
}

My current .clang-format is:

---
BasedOnStyle: Mozilla
AlignAfterOpenBracket: AlwaysBreak
AlignConsecutiveMacros: 'true'
AlignConsecutiveAssignments: 'true'
AlignConsecutiveDeclarations: 'true'
AlignEscapedNewlines: Right
AlignOperands: 'true'
AlignTrailingComments: 'true'
AlwaysBreakAfterDefinitionReturnType: All
AlwaysBreakAfterReturnType: All
AlwaysBreakBeforeMultilineStrings: 'true'
AlwaysBreakTemplateDeclarations: 'Yes'
BreakBeforeBinaryOperators: All
BreakBeforeBraces: Allman
BreakBeforeTernaryOperators: 'true'
BreakConstructorInitializers: BeforeComma
BreakInheritanceList: BeforeComma
BreakStringLiterals: 'true'
ColumnLimit: '80'
ConstructorInitializerIndentWidth: '8'
ContinuationIndentWidth: '8'
DerivePointerAlignment: 'true'
FixNamespaceComments: 'true'
IndentCaseLabels: 'true'
IndentPPDirectives: BeforeHash
IndentWidth: '8'
KeepEmptyLinesAtTheStartOfBlocks: 'false'
NamespaceIndentation: All
SortIncludes: 'false'
SortUsingDeclarations: 'true'
TabWidth: '8'
UseTab: Always
BinPackArguments: false
BinPackParameters: false

...

[llvmbot]

@llvm/issue-subscribers-clang-format

Author: byk (byk4)

Hi I am new to .clang-format. I want each argument on new line ex. ```c int foo( int x, int b) { return (x + b); } ```

but currently I am getting:

int
foo(int x, int b)
{
	return (x + b);
}

My current .clang-format is:

---
BasedOnStyle: Mozilla
AlignAfterOpenBracket: AlwaysBreak
AlignConsecutiveMacros: 'true'
AlignConsecutiveAssignments: 'true'
AlignConsecutiveDeclarations: 'true'
AlignEscapedNewlines: Right
AlignOperands: 'true'
AlignTrailingComments: 'true'
AlwaysBreakAfterDefinitionReturnType: All
AlwaysBreakAfterReturnType: All
AlwaysBreakBeforeMultilineStrings: 'true'
AlwaysBreakTemplateDeclarations: 'Yes'
BreakBeforeBinaryOperators: All
BreakBeforeBraces: Allman
BreakBeforeTernaryOperators: 'true'
BreakConstructorInitializers: BeforeComma
BreakInheritanceList: BeforeComma
BreakStringLiterals: 'true'
ColumnLimit: '80'
ConstructorInitializerIndentWidth: '8'
ContinuationIndentWidth: '8'
DerivePointerAlignment: 'true'
FixNamespaceComments: 'true'
IndentCaseLabels: 'true'
IndentPPDirectives: BeforeHash
IndentWidth: '8'
KeepEmptyLinesAtTheStartOfBlocks: 'false'
NamespaceIndentation: All
SortIncludes: 'false'
SortUsingDeclarations: 'true'
TabWidth: '8'
UseTab: Always
BinPackArguments: false
BinPackParameters: false

...

[byk4]

Also this is only when it dosen't hit column limit of 80 chars. Once it exceeds 80 char then it works as expected.

int
foo(int x,
    int b,
    int c,
    int d,
    int e,
    int f,
    int g,
    int h,
    int k,
    int l,
    int m,
    int n)
{
	return (x + b);
}

[dvbuka]

AlignAfterOpenBracket: AlwaysBreak only goes into effect when you hit the column limit, by design:

BAS_AlwaysBreak (in configuration: AlwaysBreak) Always break after an open bracket, if the parameters don’t fit on a single line, e.g...
https://clang.llvm.org/docs/ClangFormatStyleOptions.html#alignafteropenbracket

Some alternatives could be manually inserting a comment before function arguments:

int
foo( //
	int x,
	int b)
{
	return (x + b);
}

Or, using BinPackParameters: AlwaysOnePerLine, which gives this:

int
foo(int x,
    int b)
{
	return (x + b);
}