use GOPROXY

12 files changed, 0 insertions, 5844 deletions

diff --git a/vendor/github.com/russross/blackfriday/.gitignore b/vendor/github.com/russross/blackfriday/.gitignore
deleted file mode 100644
index 75623dc..0000000
--- a/vendor/github.com/russross/blackfriday/.gitignore
+++ /dev/null
@@ -1,8 +0,0 @@
-*.out
-*.swp
-*.8
-*.6
-_obj
-_test*
-markdown
-tags
diff --git a/vendor/github.com/russross/blackfriday/.travis.yml b/vendor/github.com/russross/blackfriday/.travis.yml
deleted file mode 100644
index a4eb257..0000000
--- a/vendor/github.com/russross/blackfriday/.travis.yml
+++ /dev/null
@@ -1,18 +0,0 @@
-# Travis CI (http://travis-ci.org/) is a continuous integration service for
-# open source projects. This file configures it to run unit tests for
-# blackfriday.
-
-language: go
-
-go:
-    - 1.5
-    - 1.6
-    - 1.7
-
-install:
-    - go get -d -t -v ./...
-    - go build -v ./...
-
-script:
-    - go test -v ./...
-    - go test -run=^$ -bench=BenchmarkReference -benchmem
diff --git a/vendor/github.com/russross/blackfriday/LICENSE.txt b/vendor/github.com/russross/blackfriday/LICENSE.txt
deleted file mode 100644
index 2885af3..0000000
--- a/vendor/github.com/russross/blackfriday/LICENSE.txt
+++ /dev/null
@@ -1,29 +0,0 @@
-Blackfriday is distributed under the Simplified BSD License:
-
-> Copyright © 2011 Russ Ross
-> All rights reserved.
->
-> Redistribution and use in source and binary forms, with or without
-> modification, are permitted provided that the following conditions
-> are met:
->
-> 1.  Redistributions of source code must retain the above copyright
->     notice, this list of conditions and the following disclaimer.
->
-> 2.  Redistributions in binary form must reproduce the above
->     copyright notice, this list of conditions and the following
->     disclaimer in the documentation and/or other materials provided with
->     the distribution.
->
-> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-> "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-> LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
-> FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-> COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-> INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-> BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-> LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-> CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-> LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
-> ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-> POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/github.com/russross/blackfriday/README.md b/vendor/github.com/russross/blackfriday/README.md
deleted file mode 100644
index 2e0db35..0000000
--- a/vendor/github.com/russross/blackfriday/README.md
+++ /dev/null
@@ -1,283 +0,0 @@
-Blackfriday [![Build Status](https://travis-ci.org/russross/blackfriday.svg?branch=master)](https://travis-ci.org/russross/blackfriday)
-===========
-
-Blackfriday is a [Markdown][1] processor implemented in [Go][2]. It
-is paranoid about its input (so you can safely feed it user-supplied
-data), it is fast, it supports common extensions (tables, smart
-punctuation substitutions, etc.), and it is safe for all utf-8
-(unicode) input.
-
-HTML output is currently supported, along with Smartypants
-extensions.
-
-It started as a translation from C of [Sundown][3].
-
-
-Installation
-------------
-
-Blackfriday is compatible with any modern Go release. With Go 1.7 and git
-installed:
-
-    go get gopkg.in/russross/blackfriday.v2
-
-will download, compile, and install the package into your `$GOPATH`
-directory hierarchy. Alternatively, you can achieve the same if you
-import it into a project:
-
-    import "gopkg.in/russross/blackfriday.v2"
-
-and `go get` without parameters.
-
-
-Versions
---------
-
-Currently maintained and recommended version of Blackfriday is `v2`. It's being
-developed on its own branch: https://github.com/russross/blackfriday/v2. You
-should install and import it via [gopkg.in][6] at
-`gopkg.in/russross/blackfriday.v2`.
-
-Version 2 offers a number of improvements over v1:
-
-* Cleaned up API
-* A separate call to [`Parse`][4], which produces an abstract syntax tree for
-  the document
-* Latest bug fixes
-* Flexibility to easily add your own rendering extensions
-
-Potential drawbacks:
-
-* Our benchmarks show v2 to be slightly slower than v1. Currently in the
-  ballpark of around 15%.
-* API breakage. If you can't afford modifying your code to adhere to the new API
-  and don't care too much about the new features, v2 is probably not for you.
-* Several bug fixes are trailing behind and still need to be forward-ported to
-  v2. See issue [#348](https://github.com/russross/blackfriday/issues/348) for
-  tracking.
-
-Usage
------
-
-For the most sensible markdown processing, it is as simple as getting your input
-into a byte slice and calling:
-
-```go
-output := blackfriday.Run(input)
-```
-
-Your input will be parsed and the output rendered with a set of most popular
-extensions enabled. If you want the most basic feature set, corresponding with
-the bare Markdown specification, use:
-
-```go
-output := blackfriday.Run(input, blackfriday.WithNoExtensions())
-```
-
-### Sanitize untrusted content
-
-Blackfriday itself does nothing to protect against malicious content. If you are
-dealing with user-supplied markdown, we recommend running Blackfriday's output
-through HTML sanitizer such as [Bluemonday][5].
-
-Here's an example of simple usage of Blackfriday together with Bluemonday:
-
-```go
-import (
-    "github.com/microcosm-cc/bluemonday"
-    "github.com/russross/blackfriday"
-)
-
-// ...
-unsafe := blackfriday.Run(input)
-html := bluemonday.UGCPolicy().SanitizeBytes(unsafe)
-```
-
-### Custom options
-
-If you want to customize the set of options, use `blackfriday.WithExtensions`,
-`blackfriday.WithRenderer` and `blackfriday.WithRefOverride`.
-
-You can also check out `blackfriday-tool` for a more complete example
-of how to use it. Download and install it using:
-
-    go get github.com/russross/blackfriday-tool
-
-This is a simple command-line tool that allows you to process a
-markdown file using a standalone program.  You can also browse the
-source directly on github if you are just looking for some example
-code:
-
-* <http://github.com/russross/blackfriday-tool>
-
-Note that if you have not already done so, installing
-`blackfriday-tool` will be sufficient to download and install
-blackfriday in addition to the tool itself. The tool binary will be
-installed in `$GOPATH/bin`.  This is a statically-linked binary that
-can be copied to wherever you need it without worrying about
-dependencies and library versions.
-
-
-Features
---------
-
-All features of Sundown are supported, including:
-
-*   **Compatibility**. The Markdown v1.0.3 test suite passes with
-    the `--tidy` option.  Without `--tidy`, the differences are
-    mostly in whitespace and entity escaping, where blackfriday is
-    more consistent and cleaner.
-
-*   **Common extensions**, including table support, fenced code
-    blocks, autolinks, strikethroughs, non-strict emphasis, etc.
-
-*   **Safety**. Blackfriday is paranoid when parsing, making it safe
-    to feed untrusted user input without fear of bad things
-    happening. The test suite stress tests this and there are no
-    known inputs that make it crash.  If you find one, please let me
-    know and send me the input that does it.
-
-    NOTE: "safety" in this context means *runtime safety only*. In order to
-    protect yourself against JavaScript injection in untrusted content, see
-    [this example](https://github.com/russross/blackfriday#sanitize-untrusted-content).
-
-*   **Fast processing**. It is fast enough to render on-demand in
-    most web applications without having to cache the output.
-
-*   **Thread safety**. You can run multiple parsers in different
-    goroutines without ill effect. There is no dependence on global
-    shared state.
-
-*   **Minimal dependencies**. Blackfriday only depends on standard
-    library packages in Go. The source code is pretty
-    self-contained, so it is easy to add to any project, including
-    Google App Engine projects.
-
-*   **Standards compliant**. Output successfully validates using the
-    W3C validation tool for HTML 4.01 and XHTML 1.0 Transitional.
-
-
-Extensions
-----------
-
-In addition to the standard markdown syntax, this package
-implements the following extensions:
-
-*   **Intra-word emphasis supression**. The `_` character is
-    commonly used inside words when discussing code, so having
-    markdown interpret it as an emphasis command is usually the
-    wrong thing. Blackfriday lets you treat all emphasis markers as
-    normal characters when they occur inside a word.
-
-*   **Tables**. Tables can be created by drawing them in the input
-    using a simple syntax:
-
-    ```
-    Name    | Age
-    --------|------
-    Bob     | 27
-    Alice   | 23
-    ```
-
-*   **Fenced code blocks**. In addition to the normal 4-space
-    indentation to mark code blocks, you can explicitly mark them
-    and supply a language (to make syntax highlighting simple). Just
-    mark it like this:
-
-        ```go
-        func getTrue() bool {
-            return true
-        }
-        ```
-
-    You can use 3 or more backticks to mark the beginning of the
-    block, and the same number to mark the end of the block.
-
-*   **Definition lists**. A simple definition list is made of a single-line
-    term followed by a colon and the definition for that term.
-
-        Cat
-        : Fluffy animal everyone likes
-        
-        Internet
-        : Vector of transmission for pictures of cats
-
-    Terms must be separated from the previous definition by a blank line.
-
-*   **Footnotes**. A marker in the text that will become a superscript number;
-    a footnote definition that will be placed in a list of footnotes at the
-    end of the document. A footnote looks like this:
-
-        This is a footnote.[^1]
-        
-        [^1]: the footnote text.
-
-*   **Autolinking**. Blackfriday can find URLs that have not been
-    explicitly marked as links and turn them into links.
-
-*   **Strikethrough**. Use two tildes (`~~`) to mark text that
-    should be crossed out.
-
-*   **Hard line breaks**. With this extension enabled newlines in the input
-    translate into line breaks in the output. This extension is off by default.
-
-*   **Smart quotes**. Smartypants-style punctuation substitution is
-    supported, turning normal double- and single-quote marks into
-    curly quotes, etc.
-
-*   **LaTeX-style dash parsing** is an additional option, where `--`
-    is translated into `&ndash;`, and `---` is translated into
-    `&mdash;`. This differs from most smartypants processors, which
-    turn a single hyphen into an ndash and a double hyphen into an
-    mdash.
-
-*   **Smart fractions**, where anything that looks like a fraction
-    is translated into suitable HTML (instead of just a few special
-    cases like most smartypant processors). For example, `4/5`
-    becomes `<sup>4</sup>&frasl;<sub>5</sub>`, which renders as
-    <sup>4</sup>&frasl;<sub>5</sub>.
-
-
-Other renderers
----------------
-
-Blackfriday is structured to allow alternative rendering engines. Here
-are a few of note:
-
-*   [github_flavored_markdown](https://godoc.org/github.com/shurcooL/github_flavored_markdown):
-    provides a GitHub Flavored Markdown renderer with fenced code block
-    highlighting, clickable heading anchor links.
-
-    It's not customizable, and its goal is to produce HTML output
-    equivalent to the [GitHub Markdown API endpoint](https://developer.github.com/v3/markdown/#render-a-markdown-document-in-raw-mode),
-    except the rendering is performed locally.
-
-*   [markdownfmt](https://github.com/shurcooL/markdownfmt): like gofmt,
-    but for markdown.
-
-*   [LaTeX output](https://bitbucket.org/ambrevar/blackfriday-latex):
-    renders output as LaTeX.
-
-
-Todo
-----
-
-*   More unit testing
-*   Improve unicode support. It does not understand all unicode
-    rules (about what constitutes a letter, a punctuation symbol,
-    etc.), so it may fail to detect word boundaries correctly in
-    some instances. It is safe on all utf-8 input.
-
-
-License
--------
-
-[Blackfriday is distributed under the Simplified BSD License](LICENSE.txt)
-
-
-   [1]: https://daringfireball.net/projects/markdown/ "Markdown"
-   [2]: https://golang.org/ "Go Language"
-   [3]: https://github.com/vmg/sundown "Sundown"
-   [4]: https://godoc.org/gopkg.in/russross/blackfriday.v2#Parse "Parse func"
-   [5]: https://github.com/microcosm-cc/bluemonday "Bluemonday"
-   [6]: https://labix.org/gopkg.in "gopkg.in"
diff --git a/vendor/github.com/russross/blackfriday/block.go b/vendor/github.com/russross/blackfriday/block.go
deleted file mode 100644
index d7da33f..0000000
--- a/vendor/github.com/russross/blackfriday/block.go
+++ /dev/null
@@ -1,1549 +0,0 @@
-//
-// Blackfriday Markdown Processor
-// Available at http://github.com/russross/blackfriday
-//
-// Copyright © 2011 Russ Ross <russ@russross.com>.
-// Distributed under the Simplified BSD License.
-// See README.md for details.
-//
-
-//
-// Functions to parse block-level elements.
-//
-
-package blackfriday
-
-import (
-	"bytes"
-	"html"
-	"regexp"
-
-	"github.com/shurcooL/sanitized_anchor_name"
-)
-
-const (
-	charEntity = "&(?:#x[a-f0-9]{1,8}|#[0-9]{1,8}|[a-z][a-z0-9]{1,31});"
-	escapable  = "[!\"#$%&'()*+,./:;<=>?@[\\\\\\]^_`{|}~-]"
-)
-
-var (
-	reBackslashOrAmp      = regexp.MustCompile("[\\&]")
-	reEntityOrEscapedChar = regexp.MustCompile("(?i)\\\\" + escapable + "|" + charEntity)
-)
-
-// Parse block-level data.
-// Note: this function and many that it calls assume that
-// the input buffer ends with a newline.
-func (p *Markdown) block(data []byte) {
-	// this is called recursively: enforce a maximum depth
-	if p.nesting >= p.maxNesting {
-		return
-	}
-	p.nesting++
-
-	// parse out one block-level construct at a time
-	for len(data) > 0 {
-		// prefixed heading:
-		//
-		// # Heading 1
-		// ## Heading 2
-		// ...
-		// ###### Heading 6
-		if p.isPrefixHeading(data) {
-			data = data[p.prefixHeading(data):]
-			continue
-		}
-
-		// block of preformatted HTML:
-		//
-		// <div>
-		//     ...
-		// </div>
-		if data[0] == '<' {
-			if i := p.html(data, true); i > 0 {
-				data = data[i:]
-				continue
-			}
-		}
-
-		// title block
-		//
-		// % stuff
-		// % more stuff
-		// % even more stuff
-		if p.extensions&Titleblock != 0 {
-			if data[0] == '%' {
-				if i := p.titleBlock(data, true); i > 0 {
-					data = data[i:]
-					continue
-				}
-			}
-		}
-
-		// blank lines.  note: returns the # of bytes to skip
-		if i := p.isEmpty(data); i > 0 {
-			data = data[i:]
-			continue
-		}
-
-		// indented code block:
-		//
-		//     func max(a, b int) int {
-		//         if a > b {
-		//             return a
-		//         }
-		//         return b
-		//      }
-		if p.codePrefix(data) > 0 {
-			data = data[p.code(data):]
-			continue
-		}
-
-		// fenced code block:
-		//
-		// ``` go
-		// func fact(n int) int {
-		//     if n <= 1 {
-		//         return n
-		//     }
-		//     return n * fact(n-1)
-		// }
-		// ```
-		if p.extensions&FencedCode != 0 {
-			if i := p.fencedCodeBlock(data, true); i > 0 {
-				data = data[i:]
-				continue
-			}
-		}
-
-		// horizontal rule:
-		//
-		// ------
-		// or
-		// ******
-		// or
-		// ______
-		if p.isHRule(data) {
-			p.addBlock(HorizontalRule, nil)
-			var i int
-			for i = 0; i < len(data) && data[i] != '\n'; i++ {
-			}
-			data = data[i:]
-			continue
-		}
-
-		// block quote:
-		//
-		// > A big quote I found somewhere
-		// > on the web
-		if p.quotePrefix(data) > 0 {
-			data = data[p.quote(data):]
-			continue
-		}
-
-		// table:
-		//
-		// Name  | Age | Phone
-		// ------|-----|---------
-		// Bob   | 31  | 555-1234
-		// Alice | 27  | 555-4321
-		if p.extensions&Tables != 0 {
-			if i := p.table(data); i > 0 {
-				data = data[i:]
-				continue
-			}
-		}
-
-		// an itemized/unordered list:
-		//
-		// * Item 1
-		// * Item 2
-		//
-		// also works with + or -
-		if p.uliPrefix(data) > 0 {
-			data = data[p.list(data, 0):]
-			continue
-		}
-
-		// a numbered/ordered list:
-		//
-		// 1. Item 1
-		// 2. Item 2
-		if p.oliPrefix(data) > 0 {
-			data = data[p.list(data, ListTypeOrdered):]
-			continue
-		}
-
-		// definition lists:
-		//
-		// Term 1
-		// :   Definition a
-		// :   Definition b
-		//
-		// Term 2
-		// :   Definition c
-		if p.extensions&DefinitionLists != 0 {
-			if p.dliPrefix(data) > 0 {
-				data = data[p.list(data, ListTypeDefinition):]
-				continue
-			}
-		}
-
-		// anything else must look like a normal paragraph
-		// note: this finds underlined headings, too
-		data = data[p.paragraph(data):]
-	}
-
-	p.nesting--
-}
-
-func (p *Markdown) addBlock(typ NodeType, content []byte) *Node {
-	p.closeUnmatchedBlocks()
-	container := p.addChild(typ, 0)
-	container.content = content
-	return container
-}
-
-func (p *Markdown) isPrefixHeading(data []byte) bool {
-	if data[0] != '#' {
-		return false
-	}
-
-	if p.extensions&SpaceHeadings != 0 {
-		level := 0
-		for level < 6 && level < len(data) && data[level] == '#' {
-			level++
-		}
-		if level == len(data) || data[level] != ' ' {
-			return false
-		}
-	}
-	return true
-}
-
-func (p *Markdown) prefixHeading(data []byte) int {
-	level := 0
-	for level < 6 && level < len(data) && data[level] == '#' {
-		level++
-	}
-	i := skipChar(data, level, ' ')
-	end := skipUntilChar(data, i, '\n')
-	skip := end
-	id := ""
-	if p.extensions&HeadingIDs != 0 {
-		j, k := 0, 0
-		// find start/end of heading id
-		for j = i; j < end-1 && (data[j] != '{' || data[j+1] != '#'); j++ {
-		}
-		for k = j + 1; k < end && data[k] != '}'; k++ {
-		}
-		// extract heading id iff found
-		if j < end && k < end {
-			id = string(data[j+2 : k])
-			end = j
-			skip = k + 1
-			for end > 0 && data[end-1] == ' ' {
-				end--
-			}
-		}
-	}
-	for end > 0 && data[end-1] == '#' {
-		if isBackslashEscaped(data, end-1) {
-			break
-		}
-		end--
-	}
-	for end > 0 && data[end-1] == ' ' {
-		end--
-	}
-	if end > i {
-		if id == "" && p.extensions&AutoHeadingIDs != 0 {
-			id = sanitized_anchor_name.Create(string(data[i:end]))
-		}
-		block := p.addBlock(Heading, data[i:end])
-		block.HeadingID = id
-		block.Level = level
-	}
-	return skip
-}
-
-func (p *Markdown) isUnderlinedHeading(data []byte) int {
-	// test of level 1 heading
-	if data[0] == '=' {
-		i := skipChar(data, 1, '=')
-		i = skipChar(data, i, ' ')
-		if i < len(data) && data[i] == '\n' {
-			return 1
-		}
-		return 0
-	}
-
-	// test of level 2 heading
-	if data[0] == '-' {
-		i := skipChar(data, 1, '-')
-		i = skipChar(data, i, ' ')
-		if i < len(data) && data[i] == '\n' {
-			return 2
-		}
-		return 0
-	}
-
-	return 0
-}
-
-func (p *Markdown) titleBlock(data []byte, doRender bool) int {
-	if data[0] != '%' {
-		return 0
-	}
-	splitData := bytes.Split(data, []byte("\n"))
-	var i int
-	for idx, b := range splitData {
-		if !bytes.HasPrefix(b, []byte("%")) {
-			i = idx // - 1
-			break
-		}
-	}
-
-	data = bytes.Join(splitData[0:i], []byte("\n"))
-	consumed := len(data)
-	data = bytes.TrimPrefix(data, []byte("% "))
-	data = bytes.Replace(data, []byte("\n% "), []byte("\n"), -1)
-	block := p.addBlock(Heading, data)
-	block.Level = 1
-	block.IsTitleblock = true
-
-	return consumed
-}
-
-func (p *Markdown) html(data []byte, doRender bool) int {
-	var i, j int
-
-	// identify the opening tag
-	if data[0] != '<' {
-		return 0
-	}
-	curtag, tagfound := p.htmlFindTag(data[1:])
-
-	// handle special cases
-	if !tagfound {
-		// check for an HTML comment
-		if size := p.htmlComment(data, doRender); size > 0 {
-			return size
-		}
-
-		// check for an <hr> tag
-		if size := p.htmlHr(data, doRender); size > 0 {
-			return size
-		}
-
-		// no special case recognized
-		return 0
-	}
-
-	// look for an unindented matching closing tag
-	// followed by a blank line
-	found := false
-	/*
-		closetag := []byte("\n</" + curtag + ">")
-		j = len(curtag) + 1
-		for !found {
-			// scan for a closing tag at the beginning of a line
-			if skip := bytes.Index(data[j:], closetag); skip >= 0 {
-				j += skip + len(closetag)
-			} else {
-				break
-			}
-
-			// see if it is the only thing on the line
-			if skip := p.isEmpty(data[j:]); skip > 0 {
-				// see if it is followed by a blank line/eof
-				j += skip
-				if j >= len(data) {
-					found = true
-					i = j
-				} else {
-					if skip := p.isEmpty(data[j:]); skip > 0 {
-						j += skip
-						found = true
-						i = j
-					}
-				}
-			}
-		}
-	*/
-
-	// if not found, try a second pass looking for indented match
-	// but not if tag is "ins" or "del" (following original Markdown.pl)
-	if !found && curtag != "ins" && curtag != "del" {
-		i = 1
-		for i < len(data) {
-			i++
-			for i < len(data) && !(data[i-1] == '<' && data[i] == '/') {
-				i++
-			}
-
-			if i+2+len(curtag) >= len(data) {
-				break
-			}
-
-			j = p.htmlFindEnd(curtag, data[i-1:])
-
-			if j > 0 {
-				i += j - 1
-				found = true
-				break
-			}
-		}
-	}
-
-	if !found {
-		return 0
-	}
-
-	// the end of the block has been found
-	if doRender {
-		// trim newlines
-		end := i
-		for end > 0 && data[end-1] == '\n' {
-			end--
-		}
-		finalizeHTMLBlock(p.addBlock(HTMLBlock, data[:end]))
-	}
-
-	return i
-}
-
-func finalizeHTMLBlock(block *Node) {
-	block.Literal = block.content
-	block.content = nil
-}
-
-// HTML comment, lax form
-func (p *Markdown) htmlComment(data []byte, doRender bool) int {
-	i := p.inlineHTMLComment(data)
-	// needs to end with a blank line
-	if j := p.isEmpty(data[i:]); j > 0 {
-		size := i + j
-		if doRender {
-			// trim trailing newlines
-			end := size
-			for end > 0 && data[end-1] == '\n' {
-				end--
-			}
-			block := p.addBlock(HTMLBlock, data[:end])
-			finalizeHTMLBlock(block)
-		}
-		return size
-	}
-	return 0
-}
-
-// HR, which is the only self-closing block tag considered
-func (p *Markdown) htmlHr(data []byte, doRender bool) int {
-	if len(data) < 4 {
-		return 0
-	}
-	if data[0] != '<' || (data[1] != 'h' && data[1] != 'H') || (data[2] != 'r' && data[2] != 'R') {
-		return 0
-	}
-	if data[3] != ' ' && data[3] != '/' && data[3] != '>' {
-		// not an <hr> tag after all; at least not a valid one
-		return 0
-	}
-	i := 3
-	for i < len(data) && data[i] != '>' && data[i] != '\n' {
-		i++
-	}
-	if i < len(data) && data[i] == '>' {
-		i++
-		if j := p.isEmpty(data[i:]); j > 0 {
-			size := i + j
-			if doRender {
-				// trim newlines
-				end := size
-				for end > 0 && data[end-1] == '\n' {
-					end--
-				}
-				finalizeHTMLBlock(p.addBlock(HTMLBlock, data[:end]))
-			}
-			return size
-		}
-	}
-	return 0
-}
-
-func (p *Markdown) htmlFindTag(data []byte) (string, bool) {
-	i := 0
-	for i < len(data) && isalnum(data[i]) {
-		i++
-	}
-	key := string(data[:i])
-	if _, ok := blockTags[key]; ok {
-		return key, true
-	}
-	return "", false
-}
-
-func (p *Markdown) htmlFindEnd(tag string, data []byte) int {
-	// assume data[0] == '<' && data[1] == '/' already tested
-	if tag == "hr" {
-		return 2
-	}
-	// check if tag is a match
-	closetag := []byte("</" + tag + ">")
-	if !bytes.HasPrefix(data, closetag) {
-		return 0
-	}
-	i := len(closetag)
-
-	// check that the rest of the line is blank
-	skip := 0
-	if skip = p.isEmpty(data[i:]); skip == 0 {
-		return 0
-	}
-	i += skip
-	skip = 0
-
-	if i >= len(data) {
-		return i
-	}
-
-	if p.extensions&LaxHTMLBlocks != 0 {
-		return i
-	}
-	if skip = p.isEmpty(data[i:]); skip == 0 {
-		// following line must be blank
-		return 0
-	}
-
-	return i + skip
-}
-
-func (*Markdown) isEmpty(data []byte) int {
-	// it is okay to call isEmpty on an empty buffer
-	if len(data) == 0 {
-		return 0
-	}
-
-	var i int
-	for i = 0; i < len(data) && data[i] != '\n'; i++ {
-		if data[i] != ' ' && data[i] != '\t' {
-			return 0
-		}
-	}
-	if i < len(data) && data[i] == '\n' {
-		i++
-	}
-	return i
-}
-
-func (*Markdown) isHRule(data []byte) bool {
-	i := 0
-
-	// skip up to three spaces
-	for i < 3 && data[i] == ' ' {
-		i++
-	}
-
-	// look at the hrule char
-	if data[i] != '*' && data[i] != '-' && data[i] != '_' {
-		return false
-	}
-	c := data[i]
-
-	// the whole line must be the char or whitespace
-	n := 0
-	for i < len(data) && data[i] != '\n' {
-		switch {
-		case data[i] == c:
-			n++
-		case data[i] != ' ':
-			return false
-		}
-		i++
-	}
-
-	return n >= 3
-}
-
-// isFenceLine checks if there's a fence line (e.g., ``` or ``` go) at the beginning of data,
-// and returns the end index if so, or 0 otherwise. It also returns the marker found.
-// If syntax is not nil, it gets set to the syntax specified in the fence line.
-func isFenceLine(data []byte, syntax *string, oldmarker string) (end int, marker string) {
-	i, size := 0, 0
-
-	// skip up to three spaces
-	for i < len(data) && i < 3 && data[i] == ' ' {
-		i++
-	}
-
-	// check for the marker characters: ~ or `
-	if i >= len(data) {
-		return 0, ""
-	}
-	if data[i] != '~' && data[i] != '`' {
-		return 0, ""
-	}
-
-	c := data[i]
-
-	// the whole line must be the same char or whitespace
-	for i < len(data) && data[i] == c {
-		size++
-		i++
-	}
-
-	// the marker char must occur at least 3 times
-	if size < 3 {
-		return 0, ""
-	}
-	marker = string(data[i-size : i])
-
-	// if this is the end marker, it must match the beginning marker
-	if oldmarker != "" && marker != oldmarker {
-		return 0, ""
-	}
-
-	// TODO(shurcooL): It's probably a good idea to simplify the 2 code paths here
-	// into one, always get the syntax, and discard it if the caller doesn't care.
-	if syntax != nil {
-		syn := 0
-		i = skipChar(data, i, ' ')
-
-		if i >= len(data) {
-			if i == len(data) {
-				return i, marker
-			}
-			return 0, ""
-		}
-
-		syntaxStart := i
-
-		if data[i] == '{' {
-			i++
-			syntaxStart++
-
-			for i < len(data) && data[i] != '}' && data[i] != '\n' {
-				syn++
-				i++
-			}
-
-			if i >= len(data) || data[i] != '}' {
-				return 0, ""
-			}
-
-			// strip all whitespace at the beginning and the end
-			// of the {} block
-			for syn > 0 && isspace(data[syntaxStart]) {
-				syntaxStart++
-				syn--
-			}
-
-			for syn > 0 && isspace(data[syntaxStart+syn-1]) {
-				syn--
-			}
-
-			i++
-		} else {
-			for i < len(data) && !isspace(data[i]) {
-				syn++
-				i++
-			}
-		}
-
-		*syntax = string(data[syntaxStart : syntaxStart+syn])
-	}
-
-	i = skipChar(data, i, ' ')
-	if i >= len(data) || data[i] != '\n' {
-		if i == len(data) {
-			return i, marker
-		}
-		return 0, ""
-	}
-	return i + 1, marker // Take newline into account.
-}
-
-// fencedCodeBlock returns the end index if data contains a fenced code block at the beginning,
-// or 0 otherwise. It writes to out if doRender is true, otherwise it has no side effects.
-// If doRender is true, a final newline is mandatory to recognize the fenced code block.
-func (p *Markdown) fencedCodeBlock(data []byte, doRender bool) int {
-	var syntax string
-	beg, marker := isFenceLine(data, &syntax, "")
-	if beg == 0 || beg >= len(data) {
-		return 0
-	}
-
-	var work bytes.Buffer
-	work.Write([]byte(syntax))
-	work.WriteByte('\n')
-
-	for {
-		// safe to assume beg < len(data)
-
-		// check for the end of the code block
-		fenceEnd, _ := isFenceLine(data[beg:], nil, marker)
-		if fenceEnd != 0 {
-			beg += fenceEnd
-			break
-		}
-
-		// copy the current line
-		end := skipUntilChar(data, beg, '\n') + 1
-
-		// did we reach the end of the buffer without a closing marker?
-		if end >= len(data) {