Fix typo and remove unnecessary conversion

README.md

@@ -65,6 +65,7 @@ Import packages:
 ```go
 import (
     "bytes"
+	
     "github.com/yuin/goldmark"
 )
 ```
@@ -106,6 +107,7 @@ Custom parser and renderer
 ```go
 import (
     "bytes"
+	
     "github.com/yuin/goldmark"
     "github.com/yuin/goldmark/extension"
     "github.com/yuin/goldmark/parser"

ast/ast.go

@@ -97,17 +97,17 @@ type Node interface {
 	SortChildren(comparator func(n1, n2 Node) int)
 
 	// ReplaceChild replace a node v1 with a node insertee.
-	// If v1 is not children of this node, ReplaceChild append a insetee to the
+	// If v1 is not children of this node, ReplaceChild append an insetee to the
 	// tail of the children.
 	ReplaceChild(self, v1, insertee Node)
 
 	// InsertBefore inserts a node insertee before a node v1.
-	// If v1 is not children of this node, InsertBefore append a insetee to the
+	// If v1 is not children of this node, InsertBefore append an insetee to the
 	// tail of the children.
 	InsertBefore(self, v1, insertee Node)
 
 	// InsertAfter inserts a node insertee after a node v1.
-	// If v1 is not children of this node, InsertBefore append a insetee to the
+	// If v1 is not children of this node, InsertBefore append an insetee to the
 	// tail of the children.
 	InsertAfter(self, v1, insertee Node)
 
@@ -118,7 +118,7 @@ type Node interface {
 
 	// Dump dumps an AST tree structure to stdout.
 	// This function completely aimed for debugging.
-	// level is a indent level. Implementer should indent informations with
+	// level is an indent level. Implementer should indent information with
 	// 2 * level spaces.
 	Dump(source []byte, level int)
 
@@ -169,7 +169,7 @@ type Node interface {
 	RemoveAttributes()
 }
 
-// A BaseNode struct implements the Node interface partialliy.
+// A BaseNode struct implements the Node interface partially.
 type BaseNode struct {
 	firstChild Node
 	lastChild  Node
@@ -468,7 +468,7 @@ const (
 	// WalkStop indicates no more walking needed.
 	WalkStop WalkStatus = iota + 1
 
-	// WalkSkipChildren indicates that Walk wont walk on children of current
+	// WalkSkipChildren indicates that Walk won't walk on children of current
 	// node.
 	WalkSkipChildren
 
@@ -482,7 +482,7 @@ const (
 // If Walker returns error, Walk function immediately stop walking.
 type Walker func(n Node, entering bool) (WalkStatus, error)
 
-// Walk walks a AST tree by the depth first search algorithm.
+// Walk walks an AST tree by the depth first search algorithm.
 func Walk(n Node, walker Walker) error {
 	_, err := walkHelper(n, walker)
 	return err

ast/block.go

@@ -7,7 +7,7 @@ import (
 	textm "github.com/yuin/goldmark/text"
 )
 
-// A BaseBlock struct implements the Node interface partialliy.
+// A BaseBlock struct implements the Node interface partially.
 type BaseBlock struct {
 	BaseNode
 	blankPreviousLines bool
@@ -265,7 +265,7 @@ type FencedCodeBlock struct {
 	language []byte
 }
 
-// Language returns an language in an info string.
+// Language returns a language in an info string.
 // Language returns nil if this node does not have an info string.
 func (n *FencedCodeBlock) Language(source []byte) []byte {
 	if n.language == nil && n.Info != nil {

ast/inline.go

@@ -8,7 +8,7 @@ import (
 	"github.com/yuin/goldmark/util"
 )
 
-// A BaseInline struct implements the Node interface partialliy.
+// A BaseInline struct implements the Node interface partially.
 type BaseInline struct {
 	BaseNode
 }
@@ -378,9 +378,10 @@ type Link struct {
 
 // Dump implements Node.Dump.
 func (n *Link) Dump(source []byte, level int) {
-	m := map[string]string{}
-	m["Destination"] = string(n.Destination)
-	m["Title"] = string(n.Title)
+	m := map[string]string{
+		"Destination": string(n.Destination),
+		"Title":       string(n.Title),
+	}
 	DumpHelper(n, source, level, m, nil)
 }
 
@@ -409,9 +410,10 @@ type Image struct {
 
 // Dump implements Node.Dump.
 func (n *Image) Dump(source []byte, level int) {
-	m := map[string]string{}
-	m["Destination"] = string(n.Destination)
-	m["Title"] = string(n.Title)
+	m := map[string]string{
+		"Destination": string(n.Destination),
+		"Title":       string(n.Title),
+	}
 	DumpHelper(n, source, level, m, nil)
 }
 
@@ -522,13 +524,14 @@ func (n *RawHTML) Inline() {}
 
 // Dump implements Node.Dump.
 func (n *RawHTML) Dump(source []byte, level int) {
-	m := map[string]string{}
-	t := []string{}
+	var t []string
 	for i := 0; i < n.Segments.Len(); i++ {
 		segment := n.Segments.At(i)
 		t = append(t, string(segment.Value(source)))
 	}
-	m["RawText"] = strings.Join(t, "")
+	m := map[string]string{
+		"RawText": strings.Join(t, ""),
+	}
 	DumpHelper(n, source, level, m, nil)
 }
 

commonmark_test.go

@@ -28,7 +28,7 @@ func TestSpec(t *testing.T) {
 	if err := json.Unmarshal(bs, &testCases); err != nil {
 		panic(err)
 	}
-	cases := []testutil.MarkdownTestCase{}
+	var cases []testutil.MarkdownTestCase
 	nos := testutil.ParseCliCaseArg()
 	for _, c := range testCases {
 		shouldAdd := len(nos) == 0

markdown.go

@@ -1,13 +1,14 @@
-// Package goldmark implements functions to convert markdown text to a desired format.
+// Package goldmark implements functions to convert Markdown text to a desired format.
 package goldmark
 
 import (
+	"io"
+
 	"github.com/yuin/goldmark/parser"
 	"github.com/yuin/goldmark/renderer"
 	"github.com/yuin/goldmark/renderer/html"
 	"github.com/yuin/goldmark/text"
 	"github.com/yuin/goldmark/util"
-	"io"
 )
 
 // DefaultParser returns a new Parser that is configured by default values.
@@ -44,7 +45,7 @@ type Markdown interface {
 	// SetParser sets a Parser to this object.
 	SetParser(parser.Parser)
 
-	// Parser returns a Renderer that will be used for conversion.
+	// Renderer returns a Renderer that will be used for conversion.
 	Renderer() renderer.Renderer
 
 	// SetRenderer sets a Renderer to this object.

parser/attribute.go

@@ -170,7 +170,7 @@ func parseAttributeValue(reader text.Reader) (interface{}, bool) {
 
 func parseAttributeArray(reader text.Reader) ([]interface{}, bool) {
 	reader.Advance(1) // skip [
-	ret := []interface{}{}
+	var ret []interface{}
 	for i := 0; ; i++ {
 		c := reader.Peek()
 		comma := false
@@ -243,11 +243,10 @@ func parseAttributeString(reader text.Reader) ([]byte, bool) {
 func scanAttributeDecimal(reader text.Reader, w io.ByteWriter) {
 	for {
 		c := reader.Peek()
-		if util.IsNumeric(c) {
-			w.WriteByte(c)
-		} else {
+		if !util.IsNumeric(c) {
 			return
 		}
+		w.WriteByte(c)
 		reader.Advance(1)
 	}
 }

parser/auto_link.go

@@ -6,8 +6,7 @@ import (
 	"github.com/yuin/goldmark/util"
 )
 
-type autoLinkParser struct {
-}
+type autoLinkParser struct{}
 
 var defaultAutoLinkParser = &autoLinkParser{}
 

parser/blockquote.go

@@ -6,13 +6,11 @@ import (
 	"github.com/yuin/goldmark/util"
 )
 
-type blockquoteParser struct {
-}
+type blockquoteParser struct{}
 
 var defaultBlockquoteParser = &blockquoteParser{}
 
-// NewBlockquoteParser returns a new BlockParser that
-// parses blockquotes.
+// NewBlockquoteParser returns a new BlockParser that parses blockquotes.
 func NewBlockquoteParser() BlockParser {
 	return defaultBlockquoteParser
 }

parser/code_block.go

@@ -6,14 +6,12 @@ import (
 	"github.com/yuin/goldmark/util"
 )
 
-type codeBlockParser struct {
-}
+type codeBlockParser struct{}
 
 // CodeBlockParser is a BlockParser implementation that parses indented code blocks.
 var defaultCodeBlockParser = &codeBlockParser{}
 
-// NewCodeBlockParser returns a new BlockParser that
-// parses code blocks.
+// NewCodeBlockParser returns a new BlockParser that parses code blocks.
 func NewCodeBlockParser() BlockParser {
 	return defaultCodeBlockParser
 }

parser/code_span.go

@@ -5,8 +5,7 @@ import (
 	"github.com/yuin/goldmark/text"
 )
 
-type codeSpanParser struct {
-}
+type codeSpanParser struct{}
 
 var defaultCodeSpanParser = &codeSpanParser{}
 

parser/delimiter.go

@@ -9,8 +9,7 @@ import (
 	"github.com/yuin/goldmark/util"
 )
 
-// A DelimiterProcessor interface provides a set of functions about
-// Delimiter nodes.
+// A DelimiterProcessor interface provides a set of functions about Delimiter nodes.
 type DelimiterProcessor interface {
 	// IsDelimiter returns true if given character is a delimiter, otherwise false.
 	IsDelimiter(byte) bool
@@ -82,9 +81,9 @@ func (d *Delimiter) ConsumeCharacters(n int) {
 	d.Segment = d.Segment.WithStop(d.Segment.Start + d.Length)
 }
 
-// CalcComsumption calculates how many characters should be used for opening
+// CalcConsumption calculates how many characters should be used for opening
 // a new span correspond to given closer.
-func (d *Delimiter) CalcComsumption(closer *Delimiter) int {
+func (d *Delimiter) CalcConsumption(closer *Delimiter) int {
 	if (d.CanClose || closer.CanOpen) && (d.OriginalLength+closer.OriginalLength)%3 == 0 && closer.OriginalLength%3 != 0 {
 		return 0
 	}
@@ -150,7 +149,7 @@ func ScanDelimiter(line []byte, before rune, min int, processor DelimiterProcess
 }
 
 // ProcessDelimiters processes the delimiter list in the context.
-// Processing will be stop when reaching the bottom.
+// Processing will stop when reaching the bottom.
 //
 // If you implement an inline parser that can have other inline nodes as
 // children, you should call this function when nesting span has closed.
@@ -188,7 +187,7 @@ func ProcessDelimiters(bottom ast.Node, pc Context) {
 		for opener = closer.PreviousDelimiter; opener != nil && opener != bottom; opener = opener.PreviousDelimiter {
 			if opener.CanOpen && opener.Processor.CanOpenCloser(opener, closer) {
 				maybeOpener = true
-				consume = opener.CalcComsumption(closer)
+				consume = opener.CalcConsumption(closer)
 				if consume > 0 {
 					found = true
 					break

parser/emphasis.go

@@ -5,8 +5,7 @@ import (
 	"github.com/yuin/goldmark/text"
 )
 
-type emphasisDelimiterProcessor struct {
-}
+type emphasisDelimiterProcessor struct{}
 
 func (p *emphasisDelimiterProcessor) IsDelimiter(b byte) bool {
 	return b == '*' || b == '_'
@@ -22,8 +21,7 @@ func (p *emphasisDelimiterProcessor) OnMatch(consumes int) ast.Node {
 
 var defaultEmphasisDelimiterProcessor = &emphasisDelimiterProcessor{}
 
-type emphasisParser struct {
-}
+type emphasisParser struct{}
 
 var defaultEmphasisParser = &emphasisParser{}
 

parser/fcode_block.go

@@ -8,13 +8,11 @@ import (
 	"github.com/yuin/goldmark/util"
 )
 
-type fencedCodeBlockParser struct {
-}
+type fencedCodeBlockParser struct{}
 
 var defaultFencedCodeBlockParser = &fencedCodeBlockParser{}
 
-// NewFencedCodeBlockParser returns a new BlockParser that
-// parses fenced code blocks.
+// NewFencedCodeBlockParser returns a new BlockParser that parses fenced code blocks.
 func NewFencedCodeBlockParser() BlockParser {
 	return defaultFencedCodeBlockParser
 }

parser/html_block.go

@@ -100,8 +100,7 @@ type htmlBlockParser struct {
 
 var defaultHTMLBlockParser = &htmlBlockParser{}
 
-// NewHTMLBlockParser return a new BlockParser that can parse html
-// blocks.
+// NewHTMLBlockParser return a new BlockParser that can parse html blocks.
 func NewHTMLBlockParser() BlockParser {
 	return defaultHTMLBlockParser
 }

parser/link.go

@@ -105,8 +105,7 @@ func removeLinkLabelState(pc Context, d *linkLabelState) {
 	d.Last = nil
 }
 
-type linkParser struct {
-}
+type linkParser struct{}
 
 var defaultLinkParser = &linkParser{}
 
@@ -244,7 +243,7 @@ func (s *linkParser) processLinkLabel(parent ast.Node, link *ast.Link, last *lin
 	}
 }
 
-var linkFindClosureOptions text.FindClosureOptions = text.FindClosureOptions{
+var linkFindClosureOptions = text.FindClosureOptions{
 	Nesting: false,
 	Newline: true,
 	Advance: true,

parser/link_ref.go

@@ -16,7 +16,7 @@ var LinkReferenceParagraphTransformer = &linkReferenceParagraphTransformer{}
 func (p *linkReferenceParagraphTransformer) Transform(node *ast.Paragraph, reader text.Reader, pc Context) {
 	lines := node.Lines()
 	block := text.NewBlockReader(reader.Source(), lines)
-	removes := [][2]int{}
+	var removes [][2]int
 	for {
 		start, end := parseLinkReferenceDefinition(block, pc)
 		if start > -1 {

parser/list.go

@@ -109,13 +109,11 @@ func lastOffset(node ast.Node) int {
 	return 0
 }
 
-type listParser struct {
-}
+type listParser struct{}
 
 var defaultListParser = &listParser{}
 
-// NewListParser returns a new BlockParser that
-// parses lists.
+// NewListParser returns a new BlockParser that parses lists.
 // This parser must take precedence over the ListItemParser.
 func NewListParser() BlockParser {
 	return defaultListParser

parser/list_item.go

@@ -6,13 +6,11 @@ import (
 	"github.com/yuin/goldmark/util"
 )
 
-type listItemParser struct {
-}
+type listItemParser struct{}
 
 var defaultListItemParser = &listItemParser{}
 
-// NewListItemParser returns a new BlockParser that
-// parses list items.
+// NewListItemParser returns a new BlockParser that parses list items.
 func NewListItemParser() BlockParser {
 	return defaultListItemParser
 }

parser/paragraph.go

@@ -10,8 +10,7 @@ type paragraphParser struct {
 
 var defaultParagraphParser = &paragraphParser{}
 
-// NewParagraphParser returns a new BlockParser that
-// parses paragraphs.
+// NewParagraphParser returns a new BlockParser that parses paragraphs.
 func NewParagraphParser() BlockParser {
 	return defaultParagraphParser
 }

parser/parser.go

@@ -75,7 +75,7 @@ func newIDs() IDs {
 func (s *ids) Generate(value []byte, kind ast.NodeKind) []byte {
 	value = util.TrimLeftSpace(value)
 	value = util.TrimRightSpace(value)
-	result := []byte{}
+	var result []byte
 	for i := 0; i < len(value); {
 		v := value[i]
 		l := util.UTF8Len(v)
@@ -162,7 +162,7 @@ type Context interface {
 	// BlockOffset returns -1 if current line is blank.
 	BlockOffset() int
 
-	// BlockOffset sets a first non-space character position on current line.
+	// SetBlockOffset sets a first non-space character position on current line.
 	// This value is valid only for BlockParser.Open.
 	SetBlockOffset(int)
 
@@ -171,7 +171,7 @@ type Context interface {
 	// BlockIndent returns -1 if current line is blank.
 	BlockIndent() int
 
-	// BlockIndent sets an indent width on current line.
+	// SetBlockIndent sets an indent width on current line.
 	// This value is valid only for BlockParser.Open.
 	SetBlockIndent(int)
 
@@ -370,7 +370,7 @@ func (p *parseContext) References() []Reference {
 }
 
 func (p *parseContext) String() string {
-	refs := []string{}
+	var refs []string
 	for _, r := range p.refs {
 		refs = append(refs, r.String())
 	}
@@ -451,11 +451,10 @@ type Option interface {
 // OptionName is a name of parser options.
 type OptionName string
 
-// Attribute is an option name that spacify attributes of elements.
+// Attribute is an option name that specifies attributes of elements.
 const optAttribute OptionName = "Attribute"
 
-type withAttribute struct {
-}
+type withAttribute struct{}
 
 func (o *withAttribute) SetParserOption(c *Config) {
 	c.Options[optAttribute] = true
@@ -471,7 +470,7 @@ type Parser interface {
 	// Parse parses the given Markdown text into AST nodes.
 	Parse(reader text.Reader, opts ...ParseOption) ast.Node
 
-	// AddOption adds the given option to this parser.
+	// AddOptions adds the given option to this parser.
 	AddOptions(...Option)
 }
 
@@ -499,7 +498,7 @@ type BlockParser interface {
 	//
 	// If Open has not been able to parse the current line, Open should returns
 	// (nil, NoChildren). If Open has been able to parse the current line, Open
-	// should returns a new Block node and returns HasChildren or NoChildren.
+	// should return a new Block node and returns HasChildren or NoChildren.
 	Open(parent ast.Node, reader text.Reader, pc Context) (ast.Node, State)
 
 	// Continue parses the current line and returns a result of parsing.
@@ -509,9 +508,8 @@ type BlockParser interface {
 	// a reader position by consumed byte length.
 	//
 	// If Continue has not been able to parse the current line, Continue should
-	// returns Close. If Continue has been able to parse the current line,
-	// Continue should returns (Continue | NoChildren) or
-	// (Continue | HasChildren)
+	// return Close. If Continue has been able to parse the current line,
+	// Continue should return (Continue | NoChildren) or (Continue | HasChildren)
 	Continue(node ast.Node, reader text.Reader, pc Context) State
 
 	// Close will be called when the parser returns Close.
@@ -535,7 +533,7 @@ type InlineParser interface {
 	// a head of line
 	Trigger() []byte
 
-	// Parse parse the given block into an inline node.
+	// Parse parses the given block into an inline node.
 	//
 	// Parse can parse beyond the current line.
 	// If Parse has been able to parse the current line, it must advance a reader
@@ -907,7 +905,7 @@ const (
 )
 
 func (p *parser) openBlocks(parent ast.Node, blankLine bool, reader text.Reader, pc Context) blockOpenResult {
-	result := blockOpenResult(noBlocksOpened)
+	result := noBlocksOpened
 	continuable := false
 	lastBlock := pc.LastOpenedBlock()
 	if lastBlock.Node != nil {

parser/raw_html.go

@@ -14,8 +14,7 @@ type rawHTMLParser struct {
 
 var defaultRawHTMLParser = &rawHTMLParser{}
 
-// NewRawHTMLParser return a new InlineParser that can parse
-// inline htmls
+// NewRawHTMLParser return a new InlineParser that can parse inline htmls
 func NewRawHTMLParser() InlineParser {
 	return defaultRawHTMLParser
 }
@@ -153,9 +152,8 @@ func (s *rawHTMLParser) parseMultiLineRegexp(reg *regexp.Regexp, block text.Read
 			if l == eline {
 				block.Advance(end - start)
 				break
-			} else {
-				block.AdvanceLine()
 			}
+			block.AdvanceLine()
 		}
 		return node
 	}

parser/thematic_break.go

@@ -6,15 +6,13 @@ import (
 	"github.com/yuin/goldmark/util"
 )
 
-type thematicBreakPraser struct {
-}
+type thematicBreakParser struct{}
 
-var defaultThematicBreakPraser = &thematicBreakPraser{}
+var defaultThematicBreakParser = &thematicBreakParser{}
 
-// NewThematicBreakParser returns a new BlockParser that
-// parses thematic breaks.
+// NewThematicBreakParser returns a new BlockParser that parses thematic breaks.
 func NewThematicBreakParser() BlockParser {
-	return defaultThematicBreakPraser
+	return defaultThematicBreakParser
 }
 
 func isThematicBreak(line []byte, offset int) bool {
@@ -45,11 +43,11 @@ func isThematicBreak(line []byte, offset int) bool {
 	return count > 2
 }
 
-func (b *thematicBreakPraser) Trigger() []byte {
+func (b *thematicBreakParser) Trigger() []byte {
 	return []byte{'-', '*', '_'}
 }
 
-func (b *thematicBreakPraser) Open(parent ast.Node, reader text.Reader, pc Context) (ast.Node, State) {
+func (b *thematicBreakParser) Open(parent ast.Node, reader text.Reader, pc Context) (ast.Node, State) {
 	line, segment := reader.PeekLine()
 	if isThematicBreak(line, reader.LineOffset()) {
 		reader.Advance(segment.Len() - 1)
@@ -58,18 +56,18 @@ func (b *thematicBreakPraser) Open(parent ast.Node, reader text.Reader, pc Conte
 	return nil, NoChildren
 }
 
-func (b *thematicBreakPraser) Continue(node ast.Node, reader text.Reader, pc Context) State {
+func (b *thematicBreakParser) Continue(node ast.Node, reader text.Reader, pc Context) State {
 	return Close
 }
 
-func (b *thematicBreakPraser) Close(node ast.Node, reader text.Reader, pc Context) {
+func (b *thematicBreakParser) Close(node ast.Node, reader text.Reader, pc Context) {
 	// nothing to do
 }
 
-func (b *thematicBreakPraser) CanInterruptParagraph() bool {
+func (b *thematicBreakParser) CanInterruptParagraph() bool {
 	return true
 }
 
-func (b *thematicBreakPraser) CanAcceptIndentedLine() bool {
+func (b *thematicBreakParser) CanAcceptIndentedLine() bool {
 	return false
 }

renderer/html/html.go

@@ -97,8 +97,7 @@ func WithHardWraps() interface {
 // XHTML is an option name used in WithXHTML.
 const optXHTML renderer.OptionName = "XHTML"
 
-type withXHTML struct {
-}
+type withXHTML struct{}
 
 func (o *withXHTML) SetConfig(c *renderer.Config) {
 	c.Options[optXHTML] = true
@@ -683,8 +682,7 @@ type Writer interface {
 
 var replacementCharacter = []byte("\ufffd")
 
-type defaultWriter struct {
-}
+type defaultWriter struct{}
 
 func escapeRune(writer util.BufWriter, r rune) {
 	if r < 256 {

renderer/renderer.go

@@ -74,7 +74,7 @@ type NodeRendererFunc func(writer util.BufWriter, source []byte, n ast.Node, ent
 
 // A NodeRenderer interface offers NodeRendererFuncs.
 type NodeRenderer interface {
-	// RendererFuncs registers NodeRendererFuncs to given NodeRendererFuncRegisterer.
+	// RegisterFuncs registers NodeRendererFuncs to given NodeRendererFuncRegisterer.
 	RegisterFuncs(NodeRendererFuncRegisterer)
 }
 

testutil/testutil.go

@@ -65,11 +65,11 @@ type MarkdownTestCaseOptions struct {
 const attributeSeparator = "//- - - - - - - - -//"
 const caseSeparator = "//= = = = = = = = = = = = = = = = = = = = = = = =//"
 
-var optionsRegexp *regexp.Regexp = regexp.MustCompile(`(?i)\s*options:(.*)`)
+var optionsRegexp = regexp.MustCompile(`(?i)\s*options:(.*)`)
 
 // ParseCliCaseArg parses -case command line args.
 func ParseCliCaseArg() []int {
-	ret := []int{}
+	var ret []int
 	for _, a := range os.Args {
 		if strings.HasPrefix(a, "case=") {
 			parts := strings.Split(a, "=")
@@ -100,7 +100,7 @@ func DoTestCaseFile(m goldmark.Markdown, filename string, t TestingT, no ...int)
 		Markdown:    "",
 		Expected:    "",
 	}
-	cases := []MarkdownTestCase{}
+	var cases []MarkdownTestCase
 	line := 0
 	for scanner.Scan() {
 		line++
@@ -135,7 +135,7 @@ func DoTestCaseFile(m goldmark.Markdown, filename string, t TestingT, no ...int)
 		if scanner.Text() != attributeSeparator {
 			panic(fmt.Sprintf("%s: invalid separator '%s' at line %d", filename, scanner.Text(), line))
 		}
-		buf := []string{}
+		var buf []string
 		for scanner.Scan() {
 			line++
 			text := scanner.Text()
@@ -290,7 +290,7 @@ func simpleDiffAux(v1lines, v2lines [][]byte) []diff {
 		overlap = newOverlap
 	}
 	if length == 0 {
-		diffs := []diff{}
+		var diffs []diff
 		if len(v1lines) != 0 {
 			diffs = append(diffs, diff{diffRemoved, v1lines})
 		}
@@ -377,7 +377,7 @@ func applyEscapeSequence(b []byte) []byte {
 				}
 			case 'u', 'U':
 				if len(b) > i+2 {
-					num := []byte{}
+					var num []byte
 					for j := i + 2; j < len(b); j++ {
 						if util.IsHexDecimal(b[j]) {
 							num = append(num, b[j])

text/reader.go

@@ -61,14 +61,14 @@ type Reader interface {
 	// If it reaches EOF, returns false.
 	SkipSpaces() (Segment, int, bool)
 
-	// SkipSpaces skips blank lines and returns a non-blank line.
+	// SkipBlankLines skips blank lines and returns a non-blank line.
 	// If it reaches EOF, returns false.
 	SkipBlankLines() (Segment, int, bool)
 
 	// Match performs regular expression matching to current line.
 	Match(reg *regexp.Regexp) bool
 
-	// Match performs regular expression searching to current line.
+	// FindSubMatch performs regular expression searching to current line.
 	FindSubMatch(reg *regexp.Regexp) [][]byte
 
 	// FindClosure finds corresponding closure.
@@ -94,6 +94,7 @@ type FindClosureOptions struct {
 	Advance bool
 }
 
+// reader implements io.RuneReader interface
 type reader struct {
 	source       []byte
 	sourceLength int
@@ -153,7 +154,6 @@ func (r *reader) PeekLine() ([]byte, Segment) {
 	return nil, r.pos
 }
 
-// io.RuneReader interface
 func (r *reader) ReadRune() (rune, int, error) {
 	return readRuneReader(r)
 }
@@ -276,6 +276,7 @@ type BlockReader interface {
 	Reset(segment *Segments)
 }
 
+// blockReader implements io.RuneReader interface
 type blockReader struct {
 	source         []byte
 	segments       *Segments
@@ -353,21 +354,20 @@ func (r *blockReader) Value(seg Segment) []byte {
 	return ret
 }
 
-// io.RuneReader interface
 func (r *blockReader) ReadRune() (rune, int, error) {
 	return readRuneReader(r)
 }
 
 func (r *blockReader) PrecendingCharacter() rune {
 	if r.pos.Padding != 0 {
-		return rune(' ')
+		return ' '
 	}
 	if r.segments.Len() < 1 {
-		return rune('\n')
+		return '\n'
 	}
 	firstSegment := r.segments.At(0)
 	if r.line == 0 && r.pos.Start <= firstSegment.Start {
-		return rune('\n')
+		return '\n'
 	}
 	l := len(r.source)
 	i := r.pos.Start - 1
@@ -377,7 +377,7 @@ func (r *blockReader) PrecendingCharacter() rune {
 		}
 	}
 	if i < 0 || i >= l {
-		return rune('\n')
+		return '\n'
 	}
 	rn, _ := utf8.DecodeRune(r.source[i:])
 	return rn
@@ -549,7 +549,7 @@ func findSubMatchReader(r Reader, reg *regexp.Regexp) [][]byte {
 		i += size
 		runes = append(runes, r)
 	}
-	result := [][]byte{}
+	var result [][]byte
 	for i := 0; i < len(match); i += 2 {
 		result = append(result, []byte(string(runes[match[i]:match[i+1]])))
 	}

text/segment.go

@@ -2,6 +2,7 @@ package text
 
 import (
 	"bytes"
+
 	"github.com/yuin/goldmark/util"
 )
 

util/html5entities.go

@@ -1,6 +1,6 @@
 package util
 
-// An HTML5Entity struct represents HTML5 entitites.
+// An HTML5Entity struct represents HTML5 entities.
 type HTML5Entity struct {
 	Name       string
 	CodePoints []int

util/util.go

@@ -13,7 +13,7 @@ import (
 )
 
 // A CopyOnWriteBuffer is a byte buffer that copies buffer when
-// it need to be changed.
+// it needs to be changed.
 type CopyOnWriteBuffer struct {
 	buffer []byte
 	copied bool