use tabs for indentation consistently

R=gri
OCL=14125
CL=14125

doc/go_lang.txt

@@ -288,7 +288,8 @@ Digits and Letters
 
 	oct_digit = { "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" } .
 	dec_digit = { "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" } .
-  hex_digit = { "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" | "a" |
+	hex_digit =
+		{ "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" | "a" |
 		"A" | "b" | "B" | "c" | "C" | "d" | "D" | "e" | "E" | "f" | "F" } .
 	letter = "A" | "a" | ... "Z" | "z" | "_" | non_ascii .
 
@@ -421,13 +422,11 @@ point value that is constrained only upon assignment.
 	sign = "+" | "-" .
 	int_lit = [ sign ] unsigned_int_lit .
 	unsigned_int_lit = decimal_int_lit | octal_int_lit | hex_int_lit .
-  decimal_int_lit = ( "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" )
-                    { dec_digit } .
+	decimal_int_lit = ( "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" ) { dec_digit } .
 	octal_int_lit = "0" { oct_digit } .
 	hex_int_lit = "0" ( "x" | "X" ) hex_digit { hex_digit } .
 	float_lit =  [ sign ] ( fractional_lit | exponential_lit ) .
-  fractional_lit = { dec_digit } ( dec_digit "." | "." dec_digit )
-                   { dec_digit } [ exponent ] .
+	fractional_lit = { dec_digit } ( dec_digit "." | "." dec_digit ) { dec_digit } [ exponent ] .
 	exponential_lit = dec_digit { dec_digit } exponent .
 	exponent = ( "e" | "E" ) [ sign ] dec_digit { dec_digit } .
 
@@ -444,20 +443,27 @@ The string type represents the set of string values (strings).
 Strings behave like arrays of bytes, with the following properties:
 
 - They are immutable: after creation, it is not possible to change the
-  contents of a string.
+contents of a string.
+
 - No internal pointers: it is illegal to create a pointer to an inner
-  element of a string.
+element of a string.
+
 - They can be indexed: given string "s1", "s1[i]" is a byte value.
+
 - They can be concatenated: given strings "s1" and "s2", "s1 + s2" is a value
-  combining the elements of "s1" and "s2" in sequence.
+combining the elements of "s1" and "s2" in sequence.
+
 - Known length: the length of a string "s1" can be obtained by the function/
-  operator "len(s1)".  The length of a string is the number of bytes within.
-  Unlike in C, there is no terminal NUL byte.
+operator "len(s1)".  The length of a string is the number of bytes within.
+Unlike in C, there is no terminal NUL byte.
+
 - Creation 1: a string can be created from an integer value by a conversion;
-  the result is a string containing the UTF-8 encoding of that code point.
-    "string('x')" yields "x"; "string(0x1234)" yields the equivalent of "\u1234"
+the result is a string containing the UTF-8 encoding of that code point.
+"string('x')" yields "x"; "string(0x1234)" yields the equivalent of "\u1234"
+
 - Creation 2: a string can by created from an array of integer values (maybe
-  just array of bytes) by a conversion
+just array of bytes) by a conversion:
+
 	a [3]byte; a[0] = 'a'; a[1] = 'b'; a[2] = 'c';  string(a) == "abc";
 
 
@@ -480,7 +486,8 @@ This section is precise but can be skipped on first reading. The rules are:
 	octal_byte_value = "\" oct_digit oct_digit oct_digit .
 	hex_byte_value = "\" "x" hex_digit hex_digit .
 	little_u_value = "\" "u" hex_digit hex_digit hex_digit hex_digit .
-  big_u_value = "\" "U" hex_digit hex_digit hex_digit hex_digit
+	big_u_value =
+		"\" "U" hex_digit hex_digit hex_digit hex_digit
 		hex_digit hex_digit hex_digit hex_digit .
 	escaped_char = "\" ( "a" | "b" | "f" | "n" | "r" | "t" | "v" | "\" | "'" | """ ) .
 
@@ -589,7 +596,8 @@ with the static type of the variable.
 Types may be composed from other types by assembling arrays, maps,
 channels, structures, and functions. They are called composite types.
 
-  Type = TypeName | ArrayType | ChannelType | InterfaceType |
+	Type =
+		TypeName | ArrayType | ChannelType | InterfaceType |
 		FunctionType | MapType | StructType | PointerType .
 	TypeName = QualifiedIdent.
 
@@ -1294,8 +1302,8 @@ Expression syntax is based on that of C but with fewer precedence levels.
 		Expression "." identifier | Expression "." "(" Type ")" .
 
 	Call = Expression "(" [ ExpressionList ] ")" .
-  Conversion = "convert" "(" Type [ "," ExpressionList ] ")" |
-               ConversionType "(" [ ExpressionList ] ")" .
+	Conversion =
+		"convert" "(" Type [ "," ExpressionList ] ")" | ConversionType "(" [ ExpressionList ] ")" .
 	ConversionType = TypeName | ArrayType | MapType | StructType | InterfaceType .
 	Allocation = "new" "(" Type [ "," ExpressionList ] ")" .
 	Index = SimpleIndex | Slice .