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Single line pretty-printing options #20

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merged 7 commits into from
Apr 11, 2024
Merged

Single line pretty-printing options #20

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667db8e
add single-line prettification options: space after colon/comma
veqryn Nov 2, 2023
a5f2e52
Use flags.Clear, instead of Set to false
veqryn Nov 2, 2023
1fd6820
do not affect optimized path to add whitespace
veqryn Nov 9, 2023
90352ac
Rename Expand to Multiline
veqryn Nov 9, 2023
ab209a7
Minor cleanup
veqryn Nov 9, 2023
0d7641b
Merge branch 'go-json-experiment:master' into veqryn/single-line-pretty
veqryn Mar 7, 2024
5805746
Fix setting of Multiline, SpaceAfterComma, and SpaceAfterColon
veqryn Mar 16, 2024
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4 changes: 2 additions & 2 deletions arshal_any.go
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Original file line number Diff line number Diff line change
Expand Up @@ -99,7 +99,7 @@ func marshalObjectAny(enc *jsontext.Encoder, obj map[string]any, mo *jsonopts.St
return enc.WriteToken(jsontext.Null)
}
// Optimize for marshaling an empty map without any preceding whitespace.
if !xe.Flags.Get(jsonflags.Expand) && !xe.Tokens.Last.NeedObjectName() {
if !xe.Flags.Get(jsonflags.AnyWhitespace) && !xe.Tokens.Last.NeedObjectName() {
xe.Buf = append(xe.Tokens.MayAppendDelim(xe.Buf, '{'), "{}"...)
xe.Tokens.Last.Increment()
if xe.NeedFlush() {
Expand Down Expand Up @@ -212,7 +212,7 @@ func marshalArrayAny(enc *jsontext.Encoder, arr []any, mo *jsonopts.Struct) erro
return enc.WriteToken(jsontext.Null)
}
// Optimize for marshaling an empty slice without any preceding whitespace.
if !xe.Flags.Get(jsonflags.Expand) && !xe.Tokens.Last.NeedObjectName() {
if !xe.Flags.Get(jsonflags.AnyWhitespace) && !xe.Tokens.Last.NeedObjectName() {
xe.Buf = append(xe.Tokens.MayAppendDelim(xe.Buf, '['), "[]"...)
xe.Tokens.Last.Increment()
if xe.NeedFlush() {
Expand Down
22 changes: 13 additions & 9 deletions arshal_default.go
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Original file line number Diff line number Diff line change
Expand Up @@ -126,7 +126,7 @@ func makeBoolArshaler(t reflect.Type) *arshaler {
}

// Optimize for marshaling without preceding whitespace.
if optimizeCommon && !xe.Flags.Get(jsonflags.Expand) && !xe.Tokens.Last.NeedObjectName() {
if optimizeCommon && !xe.Flags.Get(jsonflags.AnyWhitespace) && !xe.Tokens.Last.NeedObjectName() {
xe.Buf = strconv.AppendBool(xe.Tokens.MayAppendDelim(xe.Buf, 't'), va.Bool())
xe.Tokens.Last.Increment()
if xe.NeedFlush() {
Expand Down Expand Up @@ -170,7 +170,7 @@ func makeStringArshaler(t reflect.Type) *arshaler {

// Optimize for marshaling without preceding whitespace or string escaping.
s := va.String()
if optimizeCommon && !xe.Flags.Get(jsonflags.Expand) && !xe.Tokens.Last.NeedObjectName() && !jsonwire.NeedEscape(s) {
if optimizeCommon && !xe.Flags.Get(jsonflags.AnyWhitespace) && !xe.Tokens.Last.NeedObjectName() && !jsonwire.NeedEscape(s) {
b := xe.Buf
b = xe.Tokens.MayAppendDelim(b, '"')
b = append(b, '"')
Expand Down Expand Up @@ -373,7 +373,7 @@ func makeIntArshaler(t reflect.Type) *arshaler {
}

// Optimize for marshaling without preceding whitespace or string escaping.
if optimizeCommon && !xe.Flags.Get(jsonflags.Expand) && !mo.Flags.Get(jsonflags.StringifyNumbers) && !xe.Tokens.Last.NeedObjectName() {
if optimizeCommon && !xe.Flags.Get(jsonflags.AnyWhitespace) && !mo.Flags.Get(jsonflags.StringifyNumbers) && !xe.Tokens.Last.NeedObjectName() {
xe.Buf = strconv.AppendInt(xe.Tokens.MayAppendDelim(xe.Buf, '0'), va.Int(), 10)
xe.Tokens.Last.Increment()
if xe.NeedFlush() {
Expand Down Expand Up @@ -450,7 +450,7 @@ func makeUintArshaler(t reflect.Type) *arshaler {
}

// Optimize for marshaling without preceding whitespace or string escaping.
if optimizeCommon && !xe.Flags.Get(jsonflags.Expand) && !mo.Flags.Get(jsonflags.StringifyNumbers) && !xe.Tokens.Last.NeedObjectName() {
if optimizeCommon && !xe.Flags.Get(jsonflags.AnyWhitespace) && !mo.Flags.Get(jsonflags.StringifyNumbers) && !xe.Tokens.Last.NeedObjectName() {
xe.Buf = strconv.AppendUint(xe.Tokens.MayAppendDelim(xe.Buf, '0'), va.Uint(), 10)
xe.Tokens.Last.Increment()
if xe.NeedFlush() {
Expand Down Expand Up @@ -532,7 +532,7 @@ func makeFloatArshaler(t reflect.Type) *arshaler {
}

// Optimize for marshaling without preceding whitespace or string escaping.
if optimizeCommon && !xe.Flags.Get(jsonflags.Expand) && !mo.Flags.Get(jsonflags.StringifyNumbers) && !xe.Tokens.Last.NeedObjectName() {
if optimizeCommon && !xe.Flags.Get(jsonflags.AnyWhitespace) && !mo.Flags.Get(jsonflags.StringifyNumbers) && !xe.Tokens.Last.NeedObjectName() {
xe.Buf = jsonwire.AppendFloat(xe.Tokens.MayAppendDelim(xe.Buf, '0'), fv, bits)
xe.Tokens.Last.Increment()
if xe.NeedFlush() {
Expand Down Expand Up @@ -651,7 +651,7 @@ func makeMapArshaler(t reflect.Type) *arshaler {
return enc.WriteToken(jsontext.Null)
}
// Optimize for marshaling an empty map without any preceding whitespace.
if optimizeCommon && !xe.Flags.Get(jsonflags.Expand) && !xe.Tokens.Last.NeedObjectName() {
if optimizeCommon && !xe.Flags.Get(jsonflags.AnyWhitespace) && !xe.Tokens.Last.NeedObjectName() {
xe.Buf = append(xe.Tokens.MayAppendDelim(xe.Buf, '{'), "{}"...)
xe.Tokens.Last.Increment()
if xe.NeedFlush() {
Expand Down Expand Up @@ -975,9 +975,13 @@ func makeStructArshaler(t reflect.Type) *arshaler {
// Append any delimiters or optional whitespace.
b := xe.Buf
if xe.Tokens.Last.Length() > 0 {
b = append(b, ',')
if xe.Flags.Get(jsonflags.SpaceAfterComma) {
b = append(b, ',', ' ')
} else {
b = append(b, ',')
}
}
if xe.Flags.Get(jsonflags.Expand) {
if xe.Flags.Get(jsonflags.Multiline) {
b = xe.AppendIndent(b, xe.Tokens.NeedIndent('"'))
}

Expand Down Expand Up @@ -1252,7 +1256,7 @@ func makeSliceArshaler(t reflect.Type) *arshaler {
return enc.WriteToken(jsontext.Null)
}
// Optimize for marshaling an empty slice without any preceding whitespace.
if optimizeCommon && !xe.Flags.Get(jsonflags.Expand) && !xe.Tokens.Last.NeedObjectName() {
if optimizeCommon && !xe.Flags.Get(jsonflags.AnyWhitespace) && !xe.Tokens.Last.NeedObjectName() {
xe.Buf = append(xe.Tokens.MayAppendDelim(xe.Buf, '['), "[]"...)
xe.Tokens.Last.Increment()
if xe.NeedFlush() {
Expand Down
129 changes: 107 additions & 22 deletions arshal_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -1087,7 +1087,7 @@ func TestMarshal(t *testing.T) {
want: `{"Aaa":"Aaa","AA_A":"AA_A","AaA":"AaA","AAa":"AAa","AAA":"AAA"}`,
}, {
name: jsontest.Name("Structs/Normal"),
opts: []Options{jsontext.Expand(true)},
opts: []Options{jsontext.Multiline(true)},
in: structAll{
Bool: true,
String: "hello",
Expand Down Expand Up @@ -1231,9 +1231,94 @@ func TestMarshal(t *testing.T) {
},
"Interface": null
}`,
}, {
name: jsontest.Name("Structs/SpaceAfterColonAndComma"),
opts: []Options{
jsontext.SpaceAfterColon(true),
jsontext.SpaceAfterComma(true),
},
in: structAll{
Bool: true,
String: "hello",
Bytes: []byte{1, 2, 3},
Int: -64,
Uint: +64,
Float: 3.14159,
Map: map[string]string{"key": "value"},
StructScalars: structScalars{
Bool: true,
String: "hello",
Bytes: []byte{1, 2, 3},
Int: -64,
Uint: +64,
Float: 3.14159,
},
StructMaps: structMaps{
MapBool: map[string]bool{"": true},
MapString: map[string]string{"": "hello"},
MapBytes: map[string][]byte{"": {1, 2, 3}},
MapInt: map[string]int64{"": -64},
MapUint: map[string]uint64{"": +64},
MapFloat: map[string]float64{"": 3.14159},
},
StructSlices: structSlices{
SliceBool: []bool{true},
SliceString: []string{"hello"},
SliceBytes: [][]byte{{1, 2, 3}},
SliceInt: []int64{-64},
SliceUint: []uint64{+64},
SliceFloat: []float64{3.14159},
},
Slice: []string{"fizz", "buzz"},
Array: [1]string{"goodbye"},
Pointer: new(structAll),
Interface: (*structAll)(nil),
},
want: `{"Bool": true, "String": "hello", "Bytes": "AQID", "Int": -64, "Uint": 64, "Float": 3.14159, "Map": {"key": "value"}, "StructScalars": {"Bool": true, "String": "hello", "Bytes": "AQID", "Int": -64, "Uint": 64, "Float": 3.14159}, "StructMaps": {"MapBool": {"": true}, "MapString": {"": "hello"}, "MapBytes": {"": "AQID"}, "MapInt": {"": -64}, "MapUint": {"": 64}, "MapFloat": {"": 3.14159}}, "StructSlices": {"SliceBool": [true], "SliceString": ["hello"], "SliceBytes": ["AQID"], "SliceInt": [-64], "SliceUint": [64], "SliceFloat": [3.14159]}, "Slice": ["fizz", "buzz"], "Array": ["goodbye"], "Pointer": {"Bool": false, "String": "", "Bytes": "", "Int": 0, "Uint": 0, "Float": 0, "Map": {}, "StructScalars": {"Bool": false, "String": "", "Bytes": "", "Int": 0, "Uint": 0, "Float": 0}, "StructMaps": {"MapBool": {}, "MapString": {}, "MapBytes": {}, "MapInt": {}, "MapUint": {}, "MapFloat": {}}, "StructSlices": {"SliceBool": [], "SliceString": [], "SliceBytes": [], "SliceInt": [], "SliceUint": [], "SliceFloat": []}, "Slice": [], "Array": [""], "Pointer": null, "Interface": null}, "Interface": null}`,
}, {
name: jsontest.Name("Structs/SpaceAfterComma"),
opts: []Options{jsontext.SpaceAfterComma(true)},
in: structAll{
Bool: true,
String: "hello",
Bytes: []byte{1, 2, 3},
Int: -64,
Uint: +64,
Float: 3.14159,
Map: map[string]string{"key": "value"},
StructScalars: structScalars{
Bool: true,
String: "hello",
Bytes: []byte{1, 2, 3},
Int: -64,
Uint: +64,
Float: 3.14159,
},
StructMaps: structMaps{
MapBool: map[string]bool{"": true},
MapString: map[string]string{"": "hello"},
MapBytes: map[string][]byte{"": {1, 2, 3}},
MapInt: map[string]int64{"": -64},
MapUint: map[string]uint64{"": +64},
MapFloat: map[string]float64{"": 3.14159},
},
StructSlices: structSlices{
SliceBool: []bool{true},
SliceString: []string{"hello"},
SliceBytes: [][]byte{{1, 2, 3}},
SliceInt: []int64{-64},
SliceUint: []uint64{+64},
SliceFloat: []float64{3.14159},
},
Slice: []string{"fizz", "buzz"},
Array: [1]string{"goodbye"},
Pointer: new(structAll),
Interface: (*structAll)(nil),
},
want: `{"Bool":true, "String":"hello", "Bytes":"AQID", "Int":-64, "Uint":64, "Float":3.14159, "Map":{"key":"value"}, "StructScalars":{"Bool":true, "String":"hello", "Bytes":"AQID", "Int":-64, "Uint":64, "Float":3.14159}, "StructMaps":{"MapBool":{"":true}, "MapString":{"":"hello"}, "MapBytes":{"":"AQID"}, "MapInt":{"":-64}, "MapUint":{"":64}, "MapFloat":{"":3.14159}}, "StructSlices":{"SliceBool":[true], "SliceString":["hello"], "SliceBytes":["AQID"], "SliceInt":[-64], "SliceUint":[64], "SliceFloat":[3.14159]}, "Slice":["fizz", "buzz"], "Array":["goodbye"], "Pointer":{"Bool":false, "String":"", "Bytes":"", "Int":0, "Uint":0, "Float":0, "Map":{}, "StructScalars":{"Bool":false, "String":"", "Bytes":"", "Int":0, "Uint":0, "Float":0}, "StructMaps":{"MapBool":{}, "MapString":{}, "MapBytes":{}, "MapInt":{}, "MapUint":{}, "MapFloat":{}}, "StructSlices":{"SliceBool":[], "SliceString":[], "SliceBytes":[], "SliceInt":[], "SliceUint":[], "SliceFloat":[]}, "Slice":[], "Array":[""], "Pointer":null, "Interface":null}, "Interface":null}`,
}, {
name: jsontest.Name("Structs/Stringified"),
opts: []Options{jsontext.Expand(true)},
opts: []Options{jsontext.Multiline(true)},
in: structStringifiedAll{
Bool: true,
String: "hello",
Expand Down Expand Up @@ -1383,7 +1468,7 @@ func TestMarshal(t *testing.T) {
want: `{}`,
}, {
name: jsontest.Name("Structs/OmitZero/NonZero"),
opts: []Options{jsontext.Expand(true)},
opts: []Options{jsontext.Multiline(true)},
in: structOmitZeroAll{
Bool: true, // not omitted since true is non-zero
String: " ", // not omitted since non-empty string is non-zero
Expand Down Expand Up @@ -1445,7 +1530,7 @@ func TestMarshal(t *testing.T) {
want: `{"ValueNeverZero":"","PointerNeverZero":""}`,
}, {
name: jsontest.Name("Structs/OmitZeroMethod/NonZero"),
opts: []Options{jsontext.Expand(true)},
opts: []Options{jsontext.Multiline(true)},
in: structOmitZeroMethodAll{
ValueAlwaysZero: valueAlwaysZero("nonzero"),
ValueNeverZero: valueNeverZero("nonzero"),
Expand All @@ -1472,12 +1557,12 @@ func TestMarshal(t *testing.T) {
}`,
}, {
name: jsontest.Name("Structs/OmitZeroMethod/Interface/Zero"),
opts: []Options{jsontext.Expand(true)},
opts: []Options{jsontext.Multiline(true)},
in: structOmitZeroMethodInterfaceAll{},
want: `{}`,
}, {
name: jsontest.Name("Structs/OmitZeroMethod/Interface/PartialZero"),
opts: []Options{jsontext.Expand(true)},
opts: []Options{jsontext.Multiline(true)},
in: structOmitZeroMethodInterfaceAll{
ValueAlwaysZero: valueAlwaysZero(""),
ValueNeverZero: valueNeverZero(""),
Expand All @@ -1491,7 +1576,7 @@ func TestMarshal(t *testing.T) {
}`,
}, {
name: jsontest.Name("Structs/OmitZeroMethod/Interface/NonZero"),
opts: []Options{jsontext.Expand(true)},
opts: []Options{jsontext.Multiline(true)},
in: structOmitZeroMethodInterfaceAll{
ValueAlwaysZero: valueAlwaysZero("nonzero"),
ValueNeverZero: valueNeverZero("nonzero"),
Expand All @@ -1507,7 +1592,7 @@ func TestMarshal(t *testing.T) {
}`,
}, {
name: jsontest.Name("Structs/OmitEmpty/Zero"),
opts: []Options{jsontext.Expand(true)},
opts: []Options{jsontext.Multiline(true)},
in: structOmitEmptyAll{},
want: `{
"Bool": false,
Expand All @@ -1525,7 +1610,7 @@ func TestMarshal(t *testing.T) {
}`,
}, {
name: jsontest.Name("Structs/OmitEmpty/EmptyNonZero"),
opts: []Options{jsontext.Expand(true)},
opts: []Options{jsontext.Multiline(true)},
in: structOmitEmptyAll{
String: string(""),
StringEmpty: stringMarshalEmpty(""),
Expand Down Expand Up @@ -1580,7 +1665,7 @@ func TestMarshal(t *testing.T) {
}`,
}, {
name: jsontest.Name("Structs/OmitEmpty/NonEmpty"),
opts: []Options{jsontext.Expand(true)},
opts: []Options{jsontext.Multiline(true)},
in: structOmitEmptyAll{
Bool: true,
PointerBool: addr(true),
Expand Down Expand Up @@ -1668,7 +1753,7 @@ func TestMarshal(t *testing.T) {
want: `{}`,
}, {
name: jsontest.Name("Structs/OmitEmpty/Legacy/NonEmpty"),
opts: []Options{jsontext.Expand(true), jsonflags.OmitEmptyWithLegacyDefinition | 1},
opts: []Options{jsontext.Multiline(true), jsonflags.OmitEmptyWithLegacyDefinition | 1},
in: structOmitEmptyAll{
Bool: true,
PointerBool: addr(true),
Expand Down Expand Up @@ -1835,7 +1920,7 @@ func TestMarshal(t *testing.T) {
want: `{"Bytes":"dmFsdWU=","Map":{"":""},"Slice":[""],"Pointer":{"Bool":true},"Interface":[""]}`,
}, {
name: jsontest.Name("Structs/Format/Bytes"),
opts: []Options{jsontext.Expand(true)},
opts: []Options{jsontext.Multiline(true)},
in: structFormatBytes{
Base16: []byte("\x01\x23\x45\x67\x89\xab\xcd\xef"),
Base32: []byte("\x00D2\x14\xc7BT\xb65τe:V\xd7\xc6u\xbew\xdf"),
Expand All @@ -1858,7 +1943,7 @@ func TestMarshal(t *testing.T) {
]
}`}, {
name: jsontest.Name("Structs/Format/ArrayBytes"),
opts: []Options{jsontext.Expand(true)},
opts: []Options{jsontext.Multiline(true)},
in: structFormatArrayBytes{
Base16: [4]byte{1, 2, 3, 4},
Base32: [4]byte{1, 2, 3, 4},
Expand All @@ -1883,7 +1968,7 @@ func TestMarshal(t *testing.T) {
"Default": "AQIDBA=="
}`}, {
name: jsontest.Name("Structs/Format/ArrayBytes/Legacy"),
opts: []Options{jsontext.Expand(true), jsonflags.FormatByteArrayAsArray | 1},
opts: []Options{jsontext.Multiline(true), jsonflags.FormatByteArrayAsArray | 1},
in: structFormatArrayBytes{
Base16: [4]byte{1, 2, 3, 4},
Base32: [4]byte{1, 2, 3, 4},
Expand Down Expand Up @@ -1930,7 +2015,7 @@ func TestMarshal(t *testing.T) {
want: `{"Array":[false,true,false,true,false,true]}`,
}, {
name: jsontest.Name("Structs/Format/Floats"),
opts: []Options{jsontext.Expand(true)},
opts: []Options{jsontext.Multiline(true)},
in: []structFormatFloats{
{NonFinite: math.Pi, PointerNonFinite: addr(math.Pi)},
{NonFinite: math.NaN(), PointerNonFinite: addr(math.NaN())},
Expand All @@ -1957,7 +2042,7 @@ func TestMarshal(t *testing.T) {
]`,
}, {
name: jsontest.Name("Structs/Format/Maps"),
opts: []Options{jsontext.Expand(true)},
opts: []Options{jsontext.Multiline(true)},
in: []structFormatMaps{{
EmitNull: map[string]string(nil), PointerEmitNull: addr(map[string]string(nil)),
EmitEmpty: map[string]string(nil), PointerEmitEmpty: addr(map[string]string(nil)),
Expand Down Expand Up @@ -2013,7 +2098,7 @@ func TestMarshal(t *testing.T) {
name: jsontest.Name("Structs/Format/Maps/FormatNilMapAsNull"),
opts: []Options{
FormatNilMapAsNull(true),
jsontext.Expand(true),
jsontext.Multiline(true),
},
in: []structFormatMaps{{
EmitNull: map[string]string(nil), PointerEmitNull: addr(map[string]string(nil)),
Expand Down Expand Up @@ -2068,7 +2153,7 @@ func TestMarshal(t *testing.T) {
]`,
}, {
name: jsontest.Name("Structs/Format/Slices"),
opts: []Options{jsontext.Expand(true)},
opts: []Options{jsontext.Multiline(true)},
in: []structFormatSlices{{
EmitNull: []string(nil), PointerEmitNull: addr([]string(nil)),
EmitEmpty: []string(nil), PointerEmitEmpty: addr([]string(nil)),
Expand Down Expand Up @@ -2851,7 +2936,7 @@ func TestMarshal(t *testing.T) {
want: `{"X":{}}`,
}, {
name: jsontest.Name("Interfaces/Any/Maps/Empty/Multiline"),
opts: []Options{jsontext.Expand(true), jsontext.WithIndent("")},
opts: []Options{jsontext.Multiline(true), jsontext.WithIndent("")},
in: struct{ X any }{map[string]any{}},
want: "{\n\"X\": {}\n}",
}, {
Expand Down Expand Up @@ -2914,7 +2999,7 @@ func TestMarshal(t *testing.T) {
want: `{"X":[]}`,
}, {
name: jsontest.Name("Interfaces/Any/Slices/Empty/Multiline"),
opts: []Options{jsontext.Expand(true), jsontext.WithIndent("")},
opts: []Options{jsontext.Multiline(true), jsontext.WithIndent("")},
in: struct{ X any }{[]any{}},
want: "{\n\"X\": []\n}",
}, {
Expand Down Expand Up @@ -3979,7 +4064,7 @@ func TestMarshal(t *testing.T) {
want: `"0s"`,
}, {
name: jsontest.Name("Duration/Format"),
opts: []Options{jsontext.Expand(true)},
opts: []Options{jsontext.Multiline(true)},
in: structDurationFormat{
12*time.Hour + 34*time.Minute + 56*time.Second + 78*time.Millisecond + 90*time.Microsecond + 12*time.Nanosecond,
12*time.Hour + 34*time.Minute + 56*time.Second + 78*time.Millisecond + 90*time.Microsecond + 12*time.Nanosecond,
Expand Down Expand Up @@ -4034,7 +4119,7 @@ func TestMarshal(t *testing.T) {
want: `{"T1":"0001-01-01T00:00:00Z","T2":"01 Jan 01 00:00 UTC","T3":"0001-01-01","T5":"0001-01-01T00:00:00Z"}`,
}, {
name: jsontest.Name("Time/Format"),
opts: []Options{jsontext.Expand(true)},
opts: []Options{jsontext.Multiline(true)},
in: structTimeFormat{
time.Date(1234, 1, 2, 3, 4, 5, 6, time.UTC),
time.Date(1234, 1, 2, 3, 4, 5, 6, time.UTC),
Expand Down
2 changes: 1 addition & 1 deletion example_test.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -573,7 +573,7 @@ func ExampleWithMarshalers_errors() {
return []byte(`"internal server error"`), nil
}),
)),
jsontext.Expand(true)) // expand for readability
jsontext.Multiline(true)) // expand for readability
if err != nil {
log.Fatal(err)
}
Expand Down
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