[clang-format] add option(s) to add space(s) around token-pasting operator (##)

[EugeneZelenko]

Code snippet:

#define Test(name) function(param ## name)

Output:

#define Test(name) function(param##name)

Desired output is same:

#define Test(name) function(param ## name)

I tried 19.1.1 and main (c874185).

Configuration:

BasedOnStyle: LLVM

BreakBeforeBraces: Allman
ColumnLimit: 100
IndentPPDirectives: AfterHash
IndentWidth: 4
LineEnding: LF
UseTab: Never

Language: Cpp
AccessModifierOffset: -4
AlignAfterOpenBracket: AlwaysBreak
AlignArrayOfStructures: Left
AlignConsecutiveAssignments: AcrossComments
AlignConsecutiveBitFields:
  Enabled: true
  AcrossEmptyLines: true
  AcrossComments: true
AlignConsecutiveDeclarations:
  Enabled: true
  AcrossEmptyLines: false
  AcrossComments: false
AlignConsecutiveMacros: AcrossEmptyLines
AlignConsecutiveShortCaseStatements:
  Enabled: true
  AcrossEmptyLines: true
  AcrossComments: true
  AlignCaseColons: false
AlignEscapedNewlines: LeftWithLastLine
AlignOperands: Align
AllowAllArgumentsOnNextLine: false
AllowAllParametersOfDeclarationOnNextLine: false
AllowShortBlocksOnASingleLine: false
AllowShortCaseExpressionOnASingleLine: false
AllowShortCaseLabelsOnASingleLine: false
AllowShortCompoundRequirementOnASingleLine: false
AllowShortEnumsOnASingleLine: false
AllowShortFunctionsOnASingleLine: Inline
AllowShortIfStatementsOnASingleLine: Never
AllowShortLambdasOnASingleLine: All
AllowShortLoopsOnASingleLine: false
BitFieldColonSpacing: After
BinPackArguments: false
BinPackParameters: false
BreakBeforeBinaryOperators: NonAssignment
BreakBeforeTernaryOperators: true
BreakConstructorInitializers: BeforeComma
BreakTemplateDeclarations: Yes
ConstructorInitializerIndentWidth: 0
ContinuationIndentWidth: 4
EmptyLineAfterAccessModifier: Never
EmptyLineBeforeAccessModifier: Always
FixNamespaceComments: true
Macros:
  - PyVarObject_HEAD_INIT(x, y)=x, y,
MainIncludeChar: Quote
MaxEmptyLinesToKeep: 1
PackConstructorInitializers: Never
PenaltyReturnTypeOnItsOwnLine: 1000
PointerAlignment: Left
SortUsingDeclarations: true
SpaceAfterTemplateKeyword: false
StatementMacros:
  - PyObject_HEAD
  - Q_OBJECT

[llvmbot]

@llvm/issue-subscribers-clang-format

Author: None (EugeneZelenko)

Code snippet:

#define Test(name) function(param ## name)

Output:

#define Test(name) function(param##name)

Desired output is same:

#define Test(name) function(param ## name)

I tried 19.1.1 and main (c874185).

Configuration:

BasedOnStyle: LLVM

BreakBeforeBraces: Allman
ColumnLimit: 100
IndentPPDirectives: AfterHash
IndentWidth: 4
LineEnding: LF
UseTab: Never

Language: Cpp
AccessModifierOffset: -4
AlignAfterOpenBracket: AlwaysBreak
AlignArrayOfStructures: Left
AlignConsecutiveAssignments: AcrossComments
AlignConsecutiveBitFields:
  Enabled: true
  AcrossEmptyLines: true
  AcrossComments: true
AlignConsecutiveDeclarations:
  Enabled: true
  AcrossEmptyLines: false
  AcrossComments: false
AlignConsecutiveMacros: AcrossEmptyLines
AlignConsecutiveShortCaseStatements:
  Enabled: true
  AcrossEmptyLines: true
  AcrossComments: true
  AlignCaseColons: false
AlignEscapedNewlines: LeftWithLastLine
AlignOperands: Align
AllowAllArgumentsOnNextLine: false
AllowAllParametersOfDeclarationOnNextLine: false
AllowShortBlocksOnASingleLine: false
AllowShortCaseExpressionOnASingleLine: false
AllowShortCaseLabelsOnASingleLine: false
AllowShortCompoundRequirementOnASingleLine: false
AllowShortEnumsOnASingleLine: false
AllowShortFunctionsOnASingleLine: Inline
AllowShortIfStatementsOnASingleLine: Never
AllowShortLambdasOnASingleLine: All
AllowShortLoopsOnASingleLine: false
BitFieldColonSpacing: After
BinPackArguments: false
BinPackParameters: false
BreakBeforeBinaryOperators: NonAssignment
BreakBeforeTernaryOperators: true
BreakConstructorInitializers: BeforeComma
BreakTemplateDeclarations: Yes
ConstructorInitializerIndentWidth: 0
ContinuationIndentWidth: 4
EmptyLineAfterAccessModifier: Never
EmptyLineBeforeAccessModifier: Always
FixNamespaceComments: true
Macros:
  - PyVarObject_HEAD_INIT(x, y)=x, y,
MainIncludeChar: Quote
MaxEmptyLinesToKeep: 1
PackConstructorInitializers: Never
PenaltyReturnTypeOnItsOwnLine: 1000
PointerAlignment: Left
SortUsingDeclarations: true
SpaceAfterTemplateKeyword: false
StatementMacros:
  - PyObject_HEAD
  - Q_OBJECT