如何配置clang-format避免点前换行并拆分超长注释？

我正在使用clang-format对类C++方言代码进行自动格式化，该方言不支持链式命令或声明中点前换行的写法。

输入代码 #

以下代码符合方言规范，但超出了.clang-format中ColumnLimit:80的限制（注释仅开头有空格，其余无空格）：

extern int some_outer_scope.some_variable;  // Description.where.this.variable.is.coming.from.which.is.far.too.long.and.should.be.broken

当前错误输出 #

clang-format（配置见下文）将其格式化为方言不允许的样式：

extern int some_outer_scope
  .some_variable;  // Description.where.this.variable.is.coming.from.which.is.far.too.long.and.should.be.broken

期望输出 #

以下任意一种格式均可接受：

1. 保持原代码不变，忽略此场景下的ColumnLimit限制：

extern int some_outer_scope.some_variable;  // Description.where.this.variable.is.coming.from.which.is.far.too.long.and.should.be.broken

2. 优先按::、.分隔符拆分注释，或任意拆分注释以满足ColumnLimit要求：

extern int some_outer_scope.some_variable;  // Description.where.this.variable
                                            // .is.coming.from.which.is.far.too.long.and
                                            // .should.be.broken
// 或者
extern int some_outer_scope.some_variable;  // Description.where.this.variable.is.coming.fr
                                            // om.which.is.far.too.long.and.should.be.broken

当前clang-format样式配置 #

---
BasedOnStyle: Google
IndentWidth: 2
---
Language: Cpp
AlignAfterOpenBracket: BlockIndent
AlignArrayOfStructures: Right
AlignConsecutiveAssignments:
  Enabled: true
  AcrossEmptyLines: false
  AcrossComments: false
  AlignCompound: true
  PadOperators: false
AlignConsecutiveDeclarations:
  Enabled: true
  AcrossEmptyLines: false
  AcrossComments: false
AlignConsecutiveMacros:
  Enabled: false
  AcrossEmptyLines: false
  AcrossComments: false
AlignOperands: Align
AlignTrailingComments:
  Kind: Never
  OverEmptyLines: 0
AllowAllArgumentsOnNextLine: true
AllowAllParametersOfDeclarationOnNextLine: true
AllowShortBlocksOnASingleLine: Always
AllowShortEnumsOnASingleLine: true
AllowShortFunctionsOnASingleLine: All
AllowShortIfStatementsOnASingleLine: Never
AllowShortLoopsOnASingleLine: true
AlwaysBreakAfterReturnType: None
AlwaysBreakBeforeMultilineStrings: true
AlwaysBreakTemplateDeclarations: Yes
BinPackArguments: true
BinPackParameters: true
BreakBeforeBraces: Custom
BraceWrapping:
  AfterClass: false
  AfterControlStatement: Never
  AfterFunction: false
  AfterExternBlock: false
  BeforeElse: true
  BeforeWhile: false
  IndentBraces: false
  SplitEmptyFunction: false
  SplitEmptyRecord: false
#BreakAdjacentStringLiterals: false
BreakBeforeBinaryOperators: NonAssignment
BreakStringLiterals: true
ColumnLimit: 80
ConstructorInitializerIndentWidth: 2
ContinuationIndentWidth: 2
Cpp11BracedListStyle: false
ExperimentalAutoDetectBinPacking: false
IncludeBlocks: Merge
IndentExternBlock: AfterExternBlock
IndentPPDirectives: BeforeHash
IndentWrappedFunctionNames: true
InsertBraces: false
InsertNewlineAtEOF: true
InsertTrailingCommas: None
KeepEmptyLinesAtEOF: false
KeepEmptyLinesAtTheStartOfBlocks: false
LineEnding: LF
MaxEmptyLinesToKeep: 1
PenaltyBreakBeforeFirstCallParameter: 0
PenaltyBreakComment: 0
PenaltyBreakString: 0
PPIndentWidth: -1
ReflowComments: true
RemoveSemicolon: true
SeparateDefinitionBlocks: Always
SortIncludes: false
SpaceBeforeAssignmentOperators: true
SpaceBeforeCpp11BracedList: true
SpaceBeforeParens: ControlStatements
SpaceBeforeSquareBrackets: false
SpaceInEmptyBlock: false
SpaceInEmptyParentheses: false
SpacesBeforeTrailingComments: 2
SpacesInAngles: Never
SpacesInConditionalStatement: true
SpacesInLineCommentPrefix:
  Minimum: 1
  Maximum: 1
SpacesInParentheses: true
SpacesInSquareBrackets: false
Standard: Latest
TabWidth: 2
TypeNames: ['int', 'string']
UseTab: Never
...

内容的提问来源于stack exchange，提问作者JE_Muc