Question

在包含至少1个赋值的逗号分隔语句列表中，clang-format相对于最后一个赋值缩进每个后续语句（赋值与否）。如何在不重新排序语句的情况下阻止它这样做？示例:( ->是标签，.是空格）：
防止这个

if ( v[ i ] - '0' == z )
->  a--,
->  v[ i++ ] = -1,
->  ->  ...--b,
->  ->  ...c++;

并使其成功：

if ( v[ i ] - '0' == z )
->  a--,
->  v[ i++ ] = -1,
->  --b,
->  c++;

我尝试更改对齐，binpack和缩进选项，但没有成功。这是我的.clang格式文件

---
Language:        Cpp
# BasedOnStyle:  LLVM
AccessModifierOffset: -2
AlignAfterOpenBracket: Align
AlignConsecutiveAssignments: false
AlignConsecutiveDeclarations: true
AlignEscapedNewlines: Left
AlignOperands:   true
AlignTrailingComments: true
AllowAllParametersOfDeclarationOnNextLine: false
AllowShortBlocksOnASingleLine: false
AllowShortCaseLabelsOnASingleLine: false
AllowShortFunctionsOnASingleLine: None
AllowShortIfStatementsOnASingleLine: false
AllowShortLoopsOnASingleLine: false
AlwaysBreakAfterDefinitionReturnType: None
AlwaysBreakAfterReturnType: None
AlwaysBreakBeforeMultilineStrings: false
AlwaysBreakTemplateDeclarations: true
BinPackArguments: false
BinPackParameters: false
BreakBeforeBraces: Custom
BraceWrapping:
  AfterClass:      false
  AfterControlStatement: true
  AfterEnum:       true
  AfterFunction:   true
  AfterNamespace:  true
  AfterObjCDeclaration: false
  AfterStruct:     true
  AfterUnion:      true
  AfterExternBlock: true
  BeforeCatch:     true
  BeforeElse:      true
  IndentBraces:    false
  SplitEmptyFunction: false
  SplitEmptyRecord: false
  SplitEmptyNamespace: false
BreakBeforeBinaryOperators: None
BreakBeforeInheritanceComma: false
BreakBeforeTernaryOperators: false
BreakConstructorInitializersBeforeComma: false
BreakConstructorInitializers: AfterColon
BreakAfterJavaFieldAnnotations: false
BreakStringLiterals: false
ColumnLimit:    0
CommentPragmas:  '^ IWYU pragma:'
CompactNamespaces: false
ConstructorInitializerAllOnOneLineOrOnePerLine: true
ConstructorInitializerIndentWidth: 4
ContinuationIndentWidth: 0
Cpp11BracedListStyle: false
DerivePointerAlignment: false
DisableFormat:   false
ExperimentalAutoDetectBinPacking: false
FixNamespaceComments: true
ForEachMacros:
  - foreach
  - Q_FOREACH
  - BOOST_FOREACH
IncludeBlocks:   Regroup
IncludeCategories:
  - Regex:           '^"(llvm|llvm-c|clang|clang-c)/'
    Priority:        2
  - Regex:           '^(<|"(gtest|gmock|isl|json)/)'
    Priority:        3
  - Regex:           '.*'
    Priority:        1
IncludeIsMainRegex: '$'
IndentCaseLabels: true
IndentPPDirectives: AfterHash
IndentWidth:     4
IndentWrappedFunctionNames: true
JavaScriptQuotes: Leave
JavaScriptWrapImports: true
KeepEmptyLinesAtTheStartOfBlocks: false
MacroBlockBegin: ''
MacroBlockEnd:   ''
MaxEmptyLinesToKeep: 1
NamespaceIndentation: None
ObjCBlockIndentWidth: 2
ObjCSpaceAfterProperty: false
ObjCSpaceBeforeProtocolList: true
PenaltyBreakAssignment: 2
PenaltyBreakBeforeFirstCallParameter: 19
PenaltyBreakComment: 300
PenaltyBreakFirstLessLess: 120
PenaltyBreakString: 1000
PenaltyExcessCharacter: 1000000
PenaltyReturnTypeOnItsOwnLine: 1000000
PointerAlignment: Middle
RawStringFormats:
  - Delimiter:       pb
    Language:        TextProto
    BasedOnStyle:    google
ReflowComments:  true
SortIncludes:    true
SortUsingDeclarations: true
SpaceAfterCStyleCast: false
SpaceAfterTemplateKeyword: true
SpaceBeforeAssignmentOperators: true
SpaceBeforeParens: ControlStatements
SpaceInEmptyParentheses: false
SpacesBeforeTrailingComments: 8
SpacesInAngles:  true
SpacesInContainerLiterals: true
SpacesInCStyleCastParentheses: true
SpacesInParentheses: true
SpacesInSquareBrackets: true
Standard:        Auto
TabWidth:        4
UseTab:          Always
...

Answer 1

这似乎是clang-format的缺陷，而且很奇怪。

在您的设置SpacesInSquareBrackets: true上出现了问题，结合使用逗号运算符并有一个赋值，该赋值必须在左侧包含方括号，并且数组索引必须使用pre-或后增量。此外，赋值之前的任何逗号分隔子句都必须包含前递增或后递增。很奇怪。

当然，像这样使用逗号运算符并不常见，因此不会被认为是好的样式。如果确实必须使用这样的逗号运算符，则需要设置SpacesInSquareBrackets: false。

我使用configurator验证了6.0.0和10.0.0上都存在此功能，因此已经存在了一段时间。

防止缩进多行逗号分隔的赋值

1 个答案: