spec: align EBNF rules consistently (cosmetic change)

Change-Id: Ib1b14b8880c6de5606f7f425a5fc1c8749d8a4b7
Reviewed-on: https://go-review.googlesource.com/c/go/+/635799
TryBot-Bypass: Robert Griesemer <gri@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>

doc/go_spec.html

@@ -1,6 +1,6 @@
 <!--{
 	"Title": "The Go Programming Language Specification",
-	"Subtitle": "Language version go1.24 (Nov 20, 2024)",
+	"Subtitle": "Language version go1.24 (Dec 12, 2024)",
 	"Path": "/ref/spec"
 }-->
 
@@ -810,12 +810,12 @@ from existing types.
 </p>
 
 <pre class="ebnf">
-Type      = TypeName [ TypeArgs ] | TypeLit | "(" Type ")" .
+Type     = TypeName [ TypeArgs ] | TypeLit | "(" Type ")" .
-TypeName  = identifier | QualifiedIdent .
+TypeName = identifier | QualifiedIdent .
-TypeArgs  = "[" TypeList [ "," ] "]" .
+TypeArgs = "[" TypeList [ "," ] "]" .
-TypeList  = Type { "," Type } .
+TypeList = Type { "," Type } .
-TypeLit   = ArrayType | StructType | PointerType | FunctionType | InterfaceType |
+TypeLit  = ArrayType | StructType | PointerType | FunctionType | InterfaceType |
-            SliceType | MapType | ChannelType .
+           SliceType | MapType | ChannelType .
 </pre>
 
 <p>
@@ -1222,12 +1222,12 @@ is <code>nil</code>.
 </p>
 
 <pre class="ebnf">
-FunctionType   = "func" Signature .
+FunctionType  = "func" Signature .
-Signature      = Parameters [ Result ] .
+Signature     = Parameters [ Result ] .
-Result         = Parameters | Type .
+Result        = Parameters | Type .
-Parameters     = "(" [ ParameterList [ "," ] ] ")" .
+Parameters    = "(" [ ParameterList [ "," ] ] ")" .
-ParameterList  = ParameterDecl { "," ParameterDecl } .
+ParameterList = ParameterDecl { "," ParameterDecl } .
-ParameterDecl  = [ IdentifierList ] [ "..." ] Type .
+ParameterDecl = [ IdentifierList ] [ "..." ] Type .
 </pre>
 
 <p>
@@ -1634,8 +1634,8 @@ The value of an uninitialized map is <code>nil</code>.
 </p>
 
 <pre class="ebnf">
-MapType     = "map" "[" KeyType "]" ElementType .
+MapType = "map" "[" KeyType "]" ElementType .
-KeyType     = Type .
+KeyType = Type .
 </pre>
 
 <p>
@@ -2176,7 +2176,7 @@ within matching brace brackets.
 </p>
 
 <pre class="ebnf">
-Block = "{" StatementList "}" .
+Block         = "{" StatementList "}" .
 StatementList = { Statement ";" } .
 </pre>
 
@@ -2233,8 +2233,8 @@ and like the blank identifier it does not introduce a new binding.
 </p>
 
 <pre class="ebnf">
-Declaration   = ConstDecl | TypeDecl | VarDecl .
+Declaration  = ConstDecl | TypeDecl | VarDecl .
-TopLevelDecl  = Declaration | FunctionDecl | MethodDecl .
+TopLevelDecl = Declaration | FunctionDecl | MethodDecl .
 </pre>
 
 <p>
@@ -2679,9 +2679,9 @@ in square brackets rather than parentheses
 </p>
 
 <pre class="ebnf">
-TypeParameters  = "[" TypeParamList [ "," ] "]" .
+TypeParameters = "[" TypeParamList [ "," ] "]" .
-TypeParamList   = TypeParamDecl { "," TypeParamDecl } .
+TypeParamList  = TypeParamDecl { "," TypeParamDecl } .
-TypeParamDecl   = IdentifierList TypeConstraint .
+TypeParamDecl  = IdentifierList TypeConstraint .
 </pre>
 
 <p>
@@ -2869,8 +2869,8 @@ binds corresponding identifiers to them, and gives each a type and an initial va
 </p>
 
 <pre class="ebnf">
-VarDecl     = "var" ( VarSpec | "(" { VarSpec ";" } ")" ) .
+VarDecl = "var" ( VarSpec | "(" { VarSpec ";" } ")" ) .
-VarSpec     = IdentifierList ( Type [ "=" ExpressionList ] | "=" ExpressionList ) .
+VarSpec = IdentifierList ( Type [ "=" ExpressionList ] | "=" ExpressionList ) .
 </pre>
 
 <pre>
@@ -3210,15 +3210,15 @@ Each element may optionally be preceded by a corresponding key.
 </p>
 
 <pre class="ebnf">
-CompositeLit  = LiteralType LiteralValue .
+CompositeLit = LiteralType LiteralValue .
-LiteralType   = StructType | ArrayType | "[" "..." "]" ElementType |
+LiteralType  = StructType | ArrayType | "[" "..." "]" ElementType |
-                SliceType | MapType | TypeName [ TypeArgs ] .
+               SliceType | MapType | TypeName [ TypeArgs ] .
-LiteralValue  = "{" [ ElementList [ "," ] ] "}" .
+LiteralValue = "{" [ ElementList [ "," ] ] "}" .
-ElementList   = KeyedElement { "," KeyedElement } .
+ElementList  = KeyedElement { "," KeyedElement } .
-KeyedElement  = [ Key ":" ] Element .
+KeyedElement = [ Key ":" ] Element .
-Key           = FieldName | Expression | LiteralValue .
+Key          = FieldName | Expression | LiteralValue .
-FieldName     = identifier .
+FieldName    = identifier .
-Element       = Expression | LiteralValue .
+Element      = Expression | LiteralValue .
 </pre>
 
 <p>
@@ -3450,22 +3450,21 @@ Primary expressions are the operands for unary and binary expressions.
 </p>
 
 <pre class="ebnf">
-PrimaryExpr =
+PrimaryExpr   = Operand |
-	Operand |
+                Conversion |
-	Conversion |
+                MethodExpr |
-	MethodExpr |
+                PrimaryExpr Selector |
-	PrimaryExpr Selector |
+                PrimaryExpr Index |
-	PrimaryExpr Index |
+                PrimaryExpr Slice |
-	PrimaryExpr Slice |
+                PrimaryExpr TypeAssertion |
-	PrimaryExpr TypeAssertion |
+                PrimaryExpr Arguments .
-	PrimaryExpr Arguments .
 
-Selector       = "." identifier .
+Selector      = "." identifier .
-Index          = "[" Expression [ "," ] "]" .
+Index         = "[" Expression [ "," ] "]" .
-Slice          = "[" [ Expression ] ":" [ Expression ] "]" |
+Slice         = "[" [ Expression ] ":" [ Expression ] "]" |
-                 "[" [ Expression ] ":" Expression ":" Expression "]" .
+                "[" [ Expression ] ":" Expression ":" Expression "]" .
-TypeAssertion  = "." "(" Type ")" .
+TypeAssertion = "." "(" Type ")" .
-Arguments      = "(" [ ( ExpressionList | Type [ "," ExpressionList ] ) [ "..." ] [ "," ] ] ")" .
+Arguments     = "(" [ ( ExpressionList | Type [ "," ExpressionList ] ) [ "..." ] [ "," ] ] ")" .
 </pre>
 
 
@@ -3638,8 +3637,8 @@ argument that is the receiver of the method.
 </p>
 
 <pre class="ebnf">
-MethodExpr    = ReceiverType "." MethodName .
+MethodExpr   = ReceiverType "." MethodName .
-ReceiverType  = Type .
+ReceiverType = Type .
 </pre>
 
 <p>
@@ -5916,11 +5915,10 @@ Statements control execution.
 </p>
 
 <pre class="ebnf">
-Statement =
+Statement  = Declaration | LabeledStmt | SimpleStmt |
-	Declaration | LabeledStmt | SimpleStmt |
+             GoStmt | ReturnStmt | BreakStmt | ContinueStmt | GotoStmt |
-	GoStmt | ReturnStmt | BreakStmt | ContinueStmt | GotoStmt |
+             FallthroughStmt | Block | IfStmt | SwitchStmt | SelectStmt | ForStmt |
-	FallthroughStmt | Block | IfStmt | SwitchStmt | SelectStmt | ForStmt |
+             DeferStmt .
-	DeferStmt .
 
 SimpleStmt = EmptyStmt | ExpressionStmt | SendStmt | IncDecStmt | Assignment | ShortVarDecl .
 </pre>
@@ -6132,7 +6130,7 @@ matching number of variables.
 <pre class="ebnf">
 Assignment = ExpressionList assign_op ExpressionList .
 
-assign_op = [ add_op | mul_op ] "=" .
+assign_op  = [ add_op | mul_op ] "=" .
 </pre>
 
 <p>
@@ -6548,7 +6546,7 @@ The iteration may be controlled by a single condition, a "for" clause, or a "ran
 </p>
 
 <pre class="ebnf">
-ForStmt = "for" [ Condition | ForClause | RangeClause ] Block .
+ForStmt   = "for" [ Condition | ForClause | RangeClause ] Block .
 Condition = Expression .
 </pre>
 
@@ -6580,8 +6578,8 @@ an increment or decrement statement. The init statement may be a
 
 <pre class="ebnf">
 ForClause = [ InitStmt ] ";" [ Condition ] ";" [ PostStmt ] .
-InitStmt = SimpleStmt .
+InitStmt  = SimpleStmt .
-PostStmt = SimpleStmt .
+PostStmt  = SimpleStmt .
 </pre>
 
 <pre>
@@ -7909,7 +7907,7 @@ types, variables, and constants.
 </p>
 
 <pre class="ebnf">
-SourceFile       = PackageClause ";" { ImportDecl ";" } { TopLevelDecl ";" } .
+SourceFile = PackageClause ";" { ImportDecl ";" } { TopLevelDecl ";" } .
 </pre>
 
 <h3 id="Package_clause">Package clause</h3>
@@ -7920,8 +7918,8 @@ to which the file belongs.
 </p>
 
 <pre class="ebnf">
-PackageClause  = "package" PackageName .
+PackageClause = "package" PackageName .
-PackageName    = identifier .
+PackageName   = identifier .
 </pre>
 
 <p>
@@ -7950,9 +7948,9 @@ that specifies the package to be imported.
 </p>
 
 <pre class="ebnf">
-ImportDecl       = "import" ( ImportSpec | "(" { ImportSpec ";" } ")" ) .
+ImportDecl = "import" ( ImportSpec | "(" { ImportSpec ";" } ")" ) .
-ImportSpec       = [ "." | PackageName ] ImportPath .
+ImportSpec = [ "." | PackageName ] ImportPath .
-ImportPath       = string_lit .
+ImportPath = string_lit .
 </pre>
 
 <p>