Rewrite markdown rendering to blackfriday v2 and rewrite orgmode rendering to go-org (#8560)

* Rewrite markdown rendering to blackfriday v2.0

* Fix style

* Fix go mod with golang 1.13

* Fix blackfriday v2 import

* Inital orgmode renderer migration to go-org

* Vendor go-org dependency

* Ignore errors :/

* Update go-org to latest version

* Update test

* Fix go-org test

* Remove unneeded code

* Fix comments

* Fix markdown test

* Fix blackfriday regression rendering HTML block

1 files changed, 0 insertions, 803 deletions

diff --git a/vendor/github.com/chaseadamsio/goorgeous/goorgeous.go b/vendor/github.com/chaseadamsio/goorgeous/goorgeous.go
deleted file mode 100644
index f1b2671d65..0000000000
--- a/vendor/github.com/chaseadamsio/goorgeous/goorgeous.go
+++ /dev/null
@@ -1,803 +0,0 @@
-package goorgeous
-
-import (
-	"bufio"
-	"bytes"
-	"regexp"
-
-	"github.com/russross/blackfriday"
-	"github.com/shurcooL/sanitized_anchor_name"
-)
-
-type inlineParser func(p *parser, out *bytes.Buffer, data []byte, offset int) int
-
-type footnotes struct {
-	id  string
-	def string
-}
-
-type parser struct {
-	r              blackfriday.Renderer
-	inlineCallback [256]inlineParser
-	notes          []footnotes
-}
-
-// NewParser returns a new parser with the inlineCallbacks required for org content
-func NewParser(renderer blackfriday.Renderer) *parser {
-	p := new(parser)
-	p.r = renderer
-
-	p.inlineCallback['='] = generateVerbatim
-	p.inlineCallback['~'] = generateCode
-	p.inlineCallback['/'] = generateEmphasis
-	p.inlineCallback['_'] = generateUnderline
-	p.inlineCallback['*'] = generateBold
-	p.inlineCallback['+'] = generateStrikethrough
-	p.inlineCallback['['] = generateLinkOrImg
-
-	return p
-}
-
-// OrgCommon is the easiest way to parse a byte slice of org content and makes assumptions
-// that the caller wants to use blackfriday's HTMLRenderer with XHTML
-func OrgCommon(input []byte) []byte {
-	renderer := blackfriday.HtmlRenderer(blackfriday.HTML_USE_XHTML, "", "")
-	return OrgOptions(input, renderer)
-}
-
-// Org is a convenience name for OrgOptions
-func Org(input []byte, renderer blackfriday.Renderer) []byte {
-	return OrgOptions(input, renderer)
-}
-
-// OrgOptions takes an org content byte slice and a renderer to use
-func OrgOptions(input []byte, renderer blackfriday.Renderer) []byte {
-	// in the case that we need to render something in isEmpty but there isn't a new line char
-	input = append(input, '\n')
-	var output bytes.Buffer
-
-	p := NewParser(renderer)
-
-	scanner := bufio.NewScanner(bytes.NewReader(input))
-	// used to capture code blocks
-	marker := ""
-	syntax := ""
-	listType := ""
-	inParagraph := false
-	inList := false
-	inTable := false
-	inFixedWidthArea := false
-	var tmpBlock bytes.Buffer
-
-	for scanner.Scan() {
-		data := scanner.Bytes()
-
-		if !isEmpty(data) && isComment(data) || IsKeyword(data) {
-			switch {
-			case inList:
-				if tmpBlock.Len() > 0 {
-					p.generateList(&output, tmpBlock.Bytes(), listType)
-				}
-				inList = false
-				listType = ""
-				tmpBlock.Reset()
-			case inTable:
-				if tmpBlock.Len() > 0 {
-					p.generateTable(&output, tmpBlock.Bytes())
-				}
-				inTable = false
-				tmpBlock.Reset()
-			case inParagraph:
-				if tmpBlock.Len() > 0 {
-					p.generateParagraph(&output, tmpBlock.Bytes()[:len(tmpBlock.Bytes())-1])
-				}
-				inParagraph = false
-				tmpBlock.Reset()
-			case inFixedWidthArea:
-				if tmpBlock.Len() > 0 {
-					tmpBlock.WriteString("</pre>\n")
-					output.Write(tmpBlock.Bytes())
-				}
-				inFixedWidthArea = false
-				tmpBlock.Reset()
-			}
-
-		}
-
-		switch {
-		case isEmpty(data):
-			switch {
-			case inList:
-				if tmpBlock.Len() > 0 {
-					p.generateList(&output, tmpBlock.Bytes(), listType)
-				}
-				inList = false
-				listType = ""
-				tmpBlock.Reset()
-			case inTable:
-				if tmpBlock.Len() > 0 {
-					p.generateTable(&output, tmpBlock.Bytes())
-				}
-				inTable = false
-				tmpBlock.Reset()
-			case inParagraph:
-				if tmpBlock.Len() > 0 {
-					p.generateParagraph(&output, tmpBlock.Bytes()[:len(tmpBlock.Bytes())-1])
-				}
-				inParagraph = false
-				tmpBlock.Reset()
-			case inFixedWidthArea:
-				if tmpBlock.Len() > 0 {
-					tmpBlock.WriteString("</pre>\n")
-					output.Write(tmpBlock.Bytes())
-				}
-				inFixedWidthArea = false
-				tmpBlock.Reset()
-			case marker != "":
-				tmpBlock.WriteByte('\n')
-			default:
-				continue
-			}
-		case isPropertyDrawer(data) || marker == "PROPERTIES":
-			if marker == "" {
-				marker = "PROPERTIES"
-			}
-			if bytes.Equal(data, []byte(":END:")) {
-				marker = ""
-			}
-			continue
-		case isBlock(data) || marker != "":
-			matches := reBlock.FindSubmatch(data)
-			if len(matches) > 0 {
-				if string(matches[1]) == "END" {
-					switch marker {
-					case "QUOTE":
-						var tmpBuf bytes.Buffer
-						p.inline(&tmpBuf, tmpBlock.Bytes())
-						p.r.BlockQuote(&output, tmpBuf.Bytes())
-					case "CENTER":
-						var tmpBuf bytes.Buffer
-						output.WriteString("<center>\n")
-						p.inline(&tmpBuf, tmpBlock.Bytes())
-						output.Write(tmpBuf.Bytes())
-						output.WriteString("</center>\n")
-					default:
-						tmpBlock.WriteByte('\n')
-						p.r.BlockCode(&output, tmpBlock.Bytes(), syntax)
-					}
-					marker = ""
-					tmpBlock.Reset()
-					continue
-				}
-
-			}
-			if marker != "" {
-				if marker != "SRC" && marker != "EXAMPLE" {
-					var tmpBuf bytes.Buffer
-					tmpBuf.Write([]byte("<p>\n"))
-					p.inline(&tmpBuf, data)
-					tmpBuf.WriteByte('\n')
-					tmpBuf.Write([]byte("</p>\n"))
-					tmpBlock.Write(tmpBuf.Bytes())
-
-				} else {
-					tmpBlock.WriteByte('\n')
-					tmpBlock.Write(data)
-				}
-
-			} else {
-				marker = string(matches[2])
-				syntax = string(matches[3])
-			}
-		case isFootnoteDef(data):
-			matches := reFootnoteDef.FindSubmatch(data)
-			for i := range p.notes {
-				if p.notes[i].id == string(matches[1]) {
-					p.notes[i].def = string(matches[2])
-				}
-			}
-		case isTable(data):
-			if inTable != true {
-				inTable = true
-			}
-			tmpBlock.Write(data)
-			tmpBlock.WriteByte('\n')
-		case IsKeyword(data):
-			continue
-		case isComment(data):
-			p.generateComment(&output, data)
-		case isHeadline(data):
-			p.generateHeadline(&output, data)
-		case isDefinitionList(data):
-			if inList != true {
-				listType = "dl"
-				inList = true
-			}
-			var work bytes.Buffer
-			flags := blackfriday.LIST_TYPE_DEFINITION
-			matches := reDefinitionList.FindSubmatch(data)
-			flags |= blackfriday.LIST_TYPE_TERM
-			p.inline(&work, matches[1])
-			p.r.ListItem(&tmpBlock, work.Bytes(), flags)
-			work.Reset()
-			flags &= ^blackfriday.LIST_TYPE_TERM
-			p.inline(&work, matches[2])
-			p.r.ListItem(&tmpBlock, work.Bytes(), flags)
-		case isUnorderedList(data):
-			if inList != true {
-				listType = "ul"
-				inList = true
-			}
-			matches := reUnorderedList.FindSubmatch(data)
-			var work bytes.Buffer
-			p.inline(&work, matches[2])
-			p.r.ListItem(&tmpBlock, work.Bytes(), 0)
-		case isOrderedList(data):
-			if inList != true {
-				listType = "ol"
-				inList = true
-			}
-			matches := reOrderedList.FindSubmatch(data)
-			var work bytes.Buffer
-			tmpBlock.WriteString("<li")
-			if len(matches[2]) > 0 {
-				tmpBlock.WriteString(" value=\"")
-				tmpBlock.Write(matches[2])
-				tmpBlock.WriteString("\"")
-				matches[3] = matches[3][1:]
-			}
-			p.inline(&work, matches[3])
-			tmpBlock.WriteString(">")
-			tmpBlock.Write(work.Bytes())
-			tmpBlock.WriteString("</li>\n")
-		case isHorizontalRule(data):
-			p.r.HRule(&output)
-		case isExampleLine(data):
-			if inParagraph == true {
-				if len(tmpBlock.Bytes()) > 0 {
-					p.generateParagraph(&output, tmpBlock.Bytes()[:len(tmpBlock.Bytes())-1])
-					inParagraph = false
-				}
-				tmpBlock.Reset()
-			}
-			if inFixedWidthArea != true {
-				tmpBlock.WriteString("<pre class=\"example\">\n")
-				inFixedWidthArea = true
-			}
-			matches := reExampleLine.FindSubmatch(data)
-			tmpBlock.Write(matches[1])
-			tmpBlock.WriteString("\n")
-			break
-		default:
-			if inParagraph == false {
-				inParagraph = true
-				if inFixedWidthArea == true {
-					if tmpBlock.Len() > 0 {
-						tmpBlock.WriteString("</pre>")
-						output.Write(tmpBlock.Bytes())
-					}
-					inFixedWidthArea = false
-					tmpBlock.Reset()
-				}
-			}
-			tmpBlock.Write(data)
-			tmpBlock.WriteByte('\n')
-		}
-	}
-
-	if len(tmpBlock.Bytes()) > 0 {
-		if inParagraph == true {
-			p.generateParagraph(&output, tmpBlock.Bytes()[:len(tmpBlock.Bytes())-1])
-		} else if inFixedWidthArea == true {
-			tmpBlock.WriteString("</pre>\n")
-			output.Write(tmpBlock.Bytes())
-		}
-	}
-
-	// Writing footnote def. list
-	if len(p.notes) > 0 {
-		flags := blackfriday.LIST_ITEM_BEGINNING_OF_LIST
-		p.r.Footnotes(&output, func() bool {
-			for i := range p.notes {
-				p.r.FootnoteItem(&output, []byte(p.notes[i].id), []byte(p.notes[i].def), flags)
-			}
-			return true
-		})
-	}
-
-	return output.Bytes()
-}
-
-// Org Syntax has been broken up into 4 distinct sections based on
-// the org-syntax draft (http://orgmode.org/worg/dev/org-syntax.html):
-// - Headlines
-// - Greater Elements
-// - Elements
-// - Objects
-
-// Headlines
-func isHeadline(data []byte) bool {
-	if !charMatches(data[0], '*') {
-		return false
-	}
-	level := 0
-	for level < 6 && charMatches(data[level], '*') {
-		level++
-	}
-	return charMatches(data[level], ' ')
-}
-
-func (p *parser) generateHeadline(out *bytes.Buffer, data []byte) {
-	level := 1
-	status := ""
-	priority := ""
-
-	for level < 6 && data[level] == '*' {
-		level++
-	}
-
-	start := skipChar(data, level, ' ')
-
-	data = data[start:]
-	i := 0
-
-	// Check if has a status so it can be rendered as a separate span that can be hidden or
-	// modified with CSS classes
-	if hasStatus(data[i:4]) {
-		status = string(data[i:4])
-		i += 5 // one extra character for the next whitespace
-	}
-
-	// Check if the next byte is a priority marker
-	if data[i] == '[' && hasPriority(data[i+1]) {
-		priority = string(data[i+1])
-		i += 4 // for "[c]" + ' '
-	}
-
-	tags, tagsFound := findTags(data, i)
-
-	headlineID := sanitized_anchor_name.Create(string(data[i:]))
-
-	generate := func() bool {
-		dataEnd := len(data)
-		if tagsFound > 0 {
-			dataEnd = tagsFound
-		}
-
-		headline := bytes.TrimRight(data[i:dataEnd], " \t")
-
-		if status != "" {
-			out.WriteString("<span class=\"todo " + status + "\">" + status + "</span>")
-			out.WriteByte(' ')
-		}
-
-		if priority != "" {
-			out.WriteString("<span class=\"priority " + priority + "\">[" + priority + "]</span>")
-			out.WriteByte(' ')
-		}
-
-		p.inline(out, headline)
-
-		if tagsFound > 0 {
-			for _, tag := range tags {
-				out.WriteByte(' ')
-				out.WriteString("<span class=\"tags " + tag + "\">" + tag + "</span>")
-				out.WriteByte(' ')
-			}
-		}
-		return true
-	}
-
-	p.r.Header(out, generate, level, headlineID)
-}
-
-func hasStatus(data []byte) bool {
-	return bytes.Contains(data, []byte("TODO")) || bytes.Contains(data, []byte("DONE"))
-}
-
-func hasPriority(char byte) bool {
-	return (charMatches(char, 'A') || charMatches(char, 'B') || charMatches(char, 'C'))
-}
-
-func findTags(data []byte, start int) ([]string, int) {
-	tags := []string{}
-	tagOpener := 0
-	tagMarker := tagOpener
-	for tIdx := start; tIdx < len(data); tIdx++ {
-		if tagMarker > 0 && data[tIdx] == ':' {
-			tags = append(tags, string(data[tagMarker+1:tIdx]))
-			tagMarker = tIdx
-		}
-		if data[tIdx] == ':' && tagOpener == 0 && data[tIdx-1] == ' ' {
-			tagMarker = tIdx
-			tagOpener = tIdx
-		}
-	}
-	return tags, tagOpener
-}
-
-// Greater Elements
-// ~~ Definition Lists
-var reDefinitionList = regexp.MustCompile(`^\s*-\s+(.+?)\s+::\s+(.*)`)
-
-func isDefinitionList(data []byte) bool {
-	return reDefinitionList.Match(data)
-}
-
-// ~~ Example lines
-var reExampleLine = regexp.MustCompile(`^\s*:\s(\s*.*)|^\s*:$`)
-
-func isExampleLine(data []byte) bool {
-	return reExampleLine.Match(data)
-}
-
-// ~~ Ordered Lists
-var reOrderedList = regexp.MustCompile(`^(\s*)\d+\.\s+\[?@?(\d*)\]?(.+)`)
-
-func isOrderedList(data []byte) bool {
-	return reOrderedList.Match(data)
-}
-
-// ~~ Unordered Lists
-var reUnorderedList = regexp.MustCompile(`^(\s*)[-\+]\s+(.+)`)
-
-func isUnorderedList(data []byte) bool {
-	return reUnorderedList.Match(data)
-}
-
-// ~~ Tables
-var reTableHeaders = regexp.MustCompile(`^[|+-]*$`)
-
-func isTable(data []byte) bool {
-	return charMatches(data[0], '|')
-}
-
-func (p *parser) generateTable(output *bytes.Buffer, data []byte) {
-	var table bytes.Buffer
-	rows := bytes.Split(bytes.Trim(data, "\n"), []byte("\n"))
-	hasTableHeaders := len(rows) > 1
-	if len(rows) > 1 {
-		hasTableHeaders = reTableHeaders.Match(rows[1])
-	}
-	tbodySet := false
-
-	for idx, row := range rows {
-		var rowBuff bytes.Buffer
-		if hasTableHeaders && idx == 0 {
-			table.WriteString("<thead>")
-			for _, cell := range bytes.Split(row[1:len(row)-1], []byte("|")) {
-				p.r.TableHeaderCell(&rowBuff, bytes.Trim(cell, " \t"), 0)
-			}
-			p.r.TableRow(&table, rowBuff.Bytes())
-			table.WriteString("</thead>\n")
-		} else if hasTableHeaders && idx == 1 {
-			continue
-		} else {
-			if !tbodySet {
-				table.WriteString("<tbody>")
-				tbodySet = true
-			}
-			if !reTableHeaders.Match(row) {
-				for _, cell := range bytes.Split(row[1:len(row)-1], []byte("|")) {
-					var cellBuff bytes.Buffer
-					p.inline(&cellBuff, bytes.Trim(cell, " \t"))
-					p.r.TableCell(&rowBuff, cellBuff.Bytes(), 0)
-				}
-				p.r.TableRow(&table, rowBuff.Bytes())
-			}
-			if tbodySet && idx == len(rows)-1 {
-				table.WriteString("</tbody>\n")
-				tbodySet = false
-			}
-		}
-	}
-
-	output.WriteString("\n<table>\n")
-	output.Write(table.Bytes())
-	output.WriteString("</table>\n")
-}
-
-// ~~ Property Drawers
-
-func isPropertyDrawer(data []byte) bool {
-	return bytes.Equal(data, []byte(":PROPERTIES:"))
-}
-
-// ~~ Dynamic Blocks
-var reBlock = regexp.MustCompile(`^#\+(BEGIN|END)_(\w+)\s*([0-9A-Za-z_\-]*)?`)
-
-func isBlock(data []byte) bool {
-	return reBlock.Match(data)
-}
-
-// ~~ Footnotes
-var reFootnoteDef = regexp.MustCompile(`^\[fn:([\w]+)\] +(.+)`)
-
-func isFootnoteDef(data []byte) bool {
-	return reFootnoteDef.Match(data)
-}
-
-// Elements
-// ~~ Keywords
-func IsKeyword(data []byte) bool {
-	return len(data) > 2 && charMatches(data[0], '#') && charMatches(data[1], '+') && !charMatches(data[2], ' ')
-}
-
-// ~~ Comments
-func isComment(data []byte) bool {
-	return charMatches(data[0], '#') && charMatches(data[1], ' ')
-}
-
-func (p *parser) generateComment(out *bytes.Buffer, data []byte) {
-	var work bytes.Buffer
-	work.WriteString("<!-- ")
-	work.Write(data[2:])
-	work.WriteString(" -->")
-	work.WriteByte('\n')
-	out.Write(work.Bytes())
-}
-
-// ~~ Horizontal Rules
-var reHorizontalRule = regexp.MustCompile(`^\s*?-----\s?$`)
-
-func isHorizontalRule(data []byte) bool {
-	return reHorizontalRule.Match(data)
-}
-
-// ~~ Paragraphs
-func (p *parser) generateParagraph(out *bytes.Buffer, data []byte) {
-	generate := func() bool {
-		p.inline(out, bytes.Trim(data, " "))
-		return true
-	}
-	p.r.Paragraph(out, generate)
-}
-
-func (p *parser) generateList(output *bytes.Buffer, data []byte, listType string) {
-	generateList := func() bool {
-		output.WriteByte('\n')
-		p.inline(output, bytes.Trim(data, " "))
-		return true
-	}
-	switch listType {
-	case "ul":
-		p.r.List(output, generateList, 0)
-	case "ol":
-		p.r.List(output, generateList, blackfriday.LIST_TYPE_ORDERED)
-	case "dl":
-		p.r.List(output, generateList, blackfriday.LIST_TYPE_DEFINITION)
-	}
-}
-
-// Objects
-
-func (p *parser) inline(out *bytes.Buffer, data []byte) {
-	i, end := 0, 0
-
-	for i < len(data) {
-		for end < len(data) && p.inlineCallback[data[end]] == nil {
-			end++
-		}
-
-		p.r.Entity(out, data[i:end])
-
-		if end >= len(data) {
-			break
-		}
-		i = end
-
-		handler := p.inlineCallback[data[i]]
-
-		if consumed := handler(p, out, data, i); consumed > 0 {
-			i += consumed
-			end = i
-			continue
-		}
-
-		end = i + 1
-	}
-}
-
-func isAcceptablePreOpeningChar(dataIn, data []byte, offset int) bool {
-	if len(dataIn) == len(data) {
-		return true
-	}
-
-	char := dataIn[offset-1]
-	return charMatches(char, ' ') || isPreChar(char)
-}
-
-func isPreChar(char byte) bool {
-	return charMatches(char, '>') || charMatches(char, '(') || charMatches(char, '{') || charMatches(char, '[')
-}
-
-func isAcceptablePostClosingChar(char byte) bool {
-	return charMatches(char, ' ') || isTerminatingChar(char)
-}
-
-func isTerminatingChar(char byte) bool {
-	return charMatches(char, '.') || charMatches(char, ',') || charMatches(char, '?') || charMatches(char, '!') || charMatches(char, ')') || charMatches(char, '}') || charMatches(char, ']')
-}
-
-func findLastCharInInline(data []byte, char byte) int {
-	timesFound := 0
-	last := 0
-	// Start from character after the inline indicator
-	for i := 1; i < len(data); i++ {
-		if timesFound == 1 {
-			break
-		}
-		if data[i] == char {
-			if len(data) == i+1 || (len(data) > i+1 && isAcceptablePostClosingChar(data[i+1])) {
-				last = i
-				timesFound += 1
-			}
-		}
-	}
-	return last
-}
-
-func generator(p *parser, out *bytes.Buffer, dataIn []byte, offset int, char byte, doInline bool, renderer func(*bytes.Buffer, []byte)) int {
-	data := dataIn[offset:]
-	c := byte(char)
-	start := 1
-	i := start
-	if len(data) <= 1 {
-		return 0
-	}
-
-	lastCharInside := findLastCharInInline(data, c)
-
-	// Org mode spec says a non-whitespace character must immediately follow.
-	// if the current char is the marker, then there's no text between, not a candidate
-	if isSpace(data[i]) || lastCharInside == i || !isAcceptablePreOpeningChar(dataIn, data, offset) {
-		return 0
-	}
-
-	if lastCharInside > 0 {
-		var work bytes.Buffer
-		if doInline {
-			p.inline(&work, data[start:lastCharInside])
-			renderer(out, work.Bytes())
-		} else {
-			renderer(out, data[start:lastCharInside])
-		}
-		next := lastCharInside + 1
-		return next
-	}
-
-	return 0
-}
-
-// ~~ Text Markup
-func generateVerbatim(p *parser, out *bytes.Buffer, data []byte, offset int) int {
-	return generator(p, out, data, offset, '=', false, p.r.CodeSpan)
-}
-
-func generateCode(p *parser, out *bytes.Buffer, data []byte, offset int) int {
-	return generator(p, out, data, offset, '~', false, p.r.CodeSpan)
-}
-
-func generateEmphasis(p *parser, out *bytes.Buffer, data []byte, offset int) int {
-	return generator(p, out, data, offset, '/', true, p.r.Emphasis)
-}
-
-func generateUnderline(p *parser, out *bytes.Buffer, data []byte, offset int) int {
-	underline := func(out *bytes.Buffer, text []byte) {
-		out.WriteString("<span style=\"text-decoration: underline;\">")
-		out.Write(text)
-		out.WriteString("</span>")
-	}
-
-	return generator(p, out, data, offset, '_', true, underline)
-}
-
-func generateBold(p *parser, out *bytes.Buffer, data []byte, offset int) int {
-	return generator(p, out, data, offset, '*', true, p.r.DoubleEmphasis)
-}
-
-func generateStrikethrough(p *parser, out *bytes.Buffer, data []byte, offset int) int {
-	return generator(p, out, data, offset, '+', true, p.r.StrikeThrough)
-}
-
-// ~~ Images and Links (inc. Footnote)
-var reLinkOrImg = regexp.MustCompile(`\[\[(.+?)\]\[?(.*?)\]?\]`)
-
-func generateLinkOrImg(p *parser, out *bytes.Buffer, data []byte, offset int) int {
-	data = data[offset+1:]
-	start := 1
-	i := start
-	var hyperlink []byte
-	isImage := false
-	isFootnote := false
-	closedLink := false
-	hasContent := false
-
-	if bytes.Equal(data[0:3], []byte("fn:")) {
-		isFootnote = true
-	} else if data[0] != '[' {
-		return 0
-	}
-
-	if bytes.Equal(data[1:6], []byte("file:")) {
-		isImage = true
-	}
-
-	for i < len(data) {
-		currChar := data[i]
-		switch {
-		case charMatches(currChar, ']') && closedLink == false:
-			if isImage {
-				hyperlink = data[start+5 : i]
-			} else if isFootnote {
-				refid := data[start+2 : i]
-				if bytes.Equal(refid, bytes.Trim(refid, " ")) {
-					p.notes = append(p.notes, footnotes{string(refid), "DEFINITION NOT FOUND"})
-					p.r.FootnoteRef(out, refid, len(p.notes))
-					return i + 2
-				} else {
-					return 0
-				}
-			} else if bytes.Equal(data[i-4:i], []byte(".org")) {
-				orgStart := start
-				if bytes.Equal(data[orgStart:orgStart+2], []byte("./")) {
-					orgStart = orgStart + 1
-				}
-				hyperlink = data[orgStart : i-4]
-			} else {
-				hyperlink = data[start:i]
-			}
-			closedLink = true
-		case charMatches(currChar, '['):
-			start = i + 1
-			hasContent = true
-		case charMatches(currChar, ']') && closedLink == true && hasContent == true && isImage == true:
-			p.r.Image(out, hyperlink, data[start:i], data[start:i])
-			return i + 3
-		case charMatches(currChar, ']') && closedLink == true && hasContent == true:
-			var tmpBuf bytes.Buffer
-			p.inline(&tmpBuf, data[start:i])
-			p.r.Link(out, hyperlink, tmpBuf.Bytes(), tmpBuf.Bytes())
-			return i + 3
-		case charMatches(currChar, ']') && closedLink == true && hasContent == false && isImage == true:
-			p.r.Image(out, hyperlink, hyperlink, hyperlink)
-			return i + 2
-		case charMatches(currChar, ']') && closedLink == true && hasContent == false:
-			p.r.Link(out, hyperlink, hyperlink, hyperlink)
-			return i + 2
-		}
-		i++
-	}
-
-	return 0
-}
-
-// Helpers
-func skipChar(data []byte, start int, char byte) int {
-	i := start
-	for i < len(data) && charMatches(data[i], char) {
-		i++
-	}
-	return i
-}
-
-func isSpace(char byte) bool {
-	return charMatches(char, ' ')
-}
-
-func isEmpty(data []byte) bool {
-	if len(data) == 0 {
-		return true
-	}
-
-	for i := 0; i < len(data) && !charMatches(data[i], '\n'); i++ {
-		if !charMatches(data[i], ' ') && !charMatches(data[i], '\t') {
-			return false
-		}
-	}
-	return true
-}
-
-func charMatches(a byte, b byte) bool {
-	return a == b
-}