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	diff --git a/lib/auto_linker.ex b/lib/auto_linker.ex
	index b4b98a7..b843a8d 100644
	--- a/lib/auto_linker.ex
	+++ b/lib/auto_linker.ex
	@@ -1,62 +1,61 @@
	defmodule AutoLinker do
	@moduledoc """
	Create url links from text containing urls.

	Turns an input string like `"Check out google.com"` into
	`Check out "<a href=\"http://google.com\" target=\"_blank\" rel=\"noopener noreferrer\">google.com</a>"`

	## Examples

	iex> AutoLinker.link("google.com")
	~s(<a href="http://google.com" class="auto-linker" target="_blank" rel="noopener noreferrer">google.com</a>)

	iex> AutoLinker.link("google.com", new_window: false, rel: false)
	~s(<a href="http://google.com" class="auto-linker">google.com</a>)

	iex> AutoLinker.link("google.com", new_window: false, rel: false, class: false)
	~s(<a href="http://google.com">google.com</a>)
	"""

	import AutoLinker.Parser

	@doc """
	Auto link a string.

	Options:

	* `class: "auto-linker"` - specify the class to be added to the generated link. false to clear
	* `rel: "noopener noreferrer"` - override the rel attribute. false to clear
	* `new_window: true` - set to false to remove `target='_blank'` attribute
	- * `scheme: false` - Set to true to link urls with schema `http://google`
	* `truncate: false` - Set to a number to truncate urls longer then the number. Truncated urls will end in `..`
	* `strip_prefix: true` - Strip the scheme prefix
	* `exclude_class: false` - Set to a class name when you don't want urls auto linked in the html of the give class
	* `exclude_id: false` - Set to an element id when you don't want urls auto linked in the html of the give element
	* `exclude_patterns: ["```"]` - Don't link anything between the the pattern
	* `email: false` - link email links
	* `mention: false` - link @mentions (when `true`, requires `mention_prefix` or `mention_handler` options to be set)
	* `mention_prefix: nil` - a prefix to build a link for a mention (example: `https://example.com/user/`)
	* `mention_handler: nil` - a custom handler to validate and formart a mention
	* `hashtag: false` - link #hashtags (when `true`, requires `hashtag_prefix` or `hashtag_handler` options to be set)
	* `hashtag_prefix: nil` - a prefix to build a link for a hashtag (example: `https://example.com/tag/`)
	* `hashtag_handler: nil` - a custom handler to validate and formart a hashtag
	* `extra: false` - link urls with rarely used schemes (magnet, ipfs, irc, etc.)
	* `validate_tld: true` - Set to false to disable TLD validation for urls/emails, also can be set to :no_scheme to validate TLDs only for urls without a scheme (e.g `example.com` will be validated, but `http://example.loki` won't)

	Each of the above options can be specified when calling `link(text, opts)`
	or can be set in the `:auto_linker`'s configuration. For example:

	config :auto_linker,
	class: false,
	new_window: false

	Note that passing opts to `link/2` will override the configuration settings.
	"""
	def link(text, opts \\ []) do
	parse(text, opts)
	end

	def link_map(text, acc, opts \\ []) do
	parse({text, acc}, opts)
	end
	end
	diff --git a/lib/auto_linker/parser.ex b/lib/auto_linker/parser.ex
	index eba051a..006258d 100644
	--- a/lib/auto_linker/parser.ex
	+++ b/lib/auto_linker/parser.ex
	@@ -1,438 +1,424 @@
	defmodule AutoLinker.Parser do
	@moduledoc """
	Module to handle parsing the the input string.
	"""

	alias AutoLinker.Builder

	@invalid_url ~r/(\.\.+)\|(^(\d+\.){1,2}\d+$)/

	- @match_url ~r{^[\w\.-]+(?:\.[\w\.-]+)+[\w\-\._~%:/?#[\]@!\$&'\*\+,;=.]+$}
	-
	- @match_scheme ~r{^(?:\W)?(?<url>(?:https?:\/\/)?[\w.-]+(?:\.[\w\.-]+)+[\w\-\._~%:\/?#[\]@!\$&'\\+,;=.]+$)}u
	+ @match_url ~r{^(?:\W)?(?<url>(?:https?:\/\/)?[\w.-]+(?:\.[\w\.-]+)+[\w\-\._~%:\/?#[\]@!\$&'\\+,;=.]+$)}u

	@match_phone ~r"((?:x\d{2,7})\|(?:(?:\+?1\s?(?:[.-]\s?)?)?(?:$\s?(?:[2-9]1[02-9]\|[2-9][02-8]1\|[2-9][02-8][02-9])\s?$\|(?:[2-9]1[02-9]\|[2-9][02-8]1\|[2-9][02-8][02-9]))\s?(?:[.-]\s?)?)(?:[2-9]1[02-9]\|[2-9][02-9]1\|[2-9][02-9]{2})\s?(?:[.-]\s?)?(?:[0-9]{4}))"

	- @match_hostname ~r{^(?:\W*https?:\/\/)?(?:[^@\n]+\\w@)?(?<host>[^:#~\/\n?]+)}u
	+ @match_hostname ~r{^\W*(?<scheme>https?:\/\/)?(?:[^@\n]+\\w@)?(?<host>[^:#~\/\n?]+)}u

	@match_ip ~r"^(([0-9]\|[1-9][0-9]\|1[0-9]{2}\|2[0-4][0-9]\|25[0-5])\.){3}([0-9]\|[1-9][0-9]\|1[0-9]{2}\|2[0-4][0-9]\|25[0-5])$"

	# @user
	# @user@example.com
	@match_mention ~r"^@[a-zA-Z\d_-]+@[a-zA-Z0-9_-](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*\|@[a-zA-Z\d_-]+"u

	# https://www.w3.org/TR/html5/forms.html#valid-e-mail-address
	@match_email ~r"^[a-zA-Z0-9.!#$%&'+\/=?^_`{\|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)$"u

	@match_hashtag ~r/^(?<tag>\#[[:word:]_][[:alpha:]_·][[:word:]_·\p{M}])/u

	@prefix_extra [
	"magnet:?",
	"dweb://",
	"dat://",
	"gopher://",
	"ipfs://",
	"ipns://",
	"irc://",
	"ircs://",
	"irc6://",
	"mumble://",
	"ssb://"
	]

	@tlds "./priv/tlds.txt" \|> File.read!() \|> String.split("\n", trim: true) \|> MapSet.new()

	@default_opts ~w(url validate_tld)a

	@doc """
	Parse the given string, identifying items to link.

	Parses the string, replacing the matching urls and phone numbers with an html link.

	## Examples

	iex> AutoLinker.Parser.parse("Check out google.com")
	~s{Check out <a href="http://google.com" class="auto-linker" target="_blank" rel="noopener noreferrer">google.com</a>}

	iex> AutoLinker.Parser.parse("call me at x9999", phone: true)
	~s{call me at <a href="#" class="phone-number" data-phone="9999">x9999</a>}

	iex> AutoLinker.Parser.parse("or at home on 555.555.5555", phone: true)
	~s{or at home on <a href="#" class="phone-number" data-phone="5555555555">555.555.5555</a>}

	iex> AutoLinker.Parser.parse(", work (555) 555-5555", phone: true)
	~s{, work <a href="#" class="phone-number" data-phone="5555555555">(555) 555-5555</a>}
	"""

	def parse(input, opts \\ %{})
	def parse(input, opts) when is_binary(input), do: {input, nil} \|> parse(opts) \|> elem(0)
	def parse(input, list) when is_list(list), do: parse(input, Enum.into(list, %{}))

	def parse(input, opts) do
	config =
	:auto_linker
	\|> Application.get_env(:opts, [])
	\|> Enum.into(%{})
	\|> Map.put(
	:attributes,
	Application.get_env(:auto_linker, :attributes, [])
	)

	opts =
	Enum.reduce(@default_opts, opts, fn opt, acc ->
	if is_nil(opts[opt]) and is_nil(config[opt]) do
	Map.put(acc, opt, true)
	else
	acc
	end
	end)

	do_parse(input, Map.merge(config, opts))
	end

	defp do_parse(input, %{phone: false} = opts), do: do_parse(input, Map.delete(opts, :phone))
	defp do_parse(input, %{url: false} = opts), do: do_parse(input, Map.delete(opts, :url))

	defp do_parse(input, %{phone: _} = opts) do
	input
	\|> do_parse(opts, {"", "", :parsing}, &check_and_link_phone/3)
	\|> do_parse(Map.delete(opts, :phone))
	end

	defp do_parse(input, %{hashtag: true} = opts) do
	input
	\|> do_parse(opts, {"", "", :parsing}, &check_and_link_hashtag/3)
	\|> do_parse(Map.delete(opts, :hashtag))
	end

	defp do_parse(input, %{extra: true} = opts) do
	input
	\|> do_parse(opts, {"", "", :parsing}, &check_and_link_extra/3)
	\|> do_parse(Map.delete(opts, :extra))
	end

	defp do_parse(input, %{email: true} = opts) do
	input
	\|> do_parse(opts, {"", "", :parsing}, &check_and_link_email/3)
	\|> do_parse(Map.delete(opts, :email))
	end

	defp do_parse({text, user_acc}, %{url: _} = opts) do
	input =
	with exclude <- Map.get(opts, :exclude_patterns),
	true <- is_list(exclude),
	true <- String.starts_with?(text, exclude) do
	{text, user_acc}
	else
	_ ->
	do_parse(
	{text, user_acc},
	opts,
	{"", "", :parsing},
	&check_and_link/3
	)
	end

	do_parse(input, Map.delete(opts, :url))
	end

	defp do_parse(input, %{mention: true} = opts) do
	input
	\|> do_parse(opts, {"", "", :parsing}, &check_and_link_mention/3)
	\|> do_parse(Map.delete(opts, :mention))
	end

	defp do_parse(input, _), do: input

	defp do_parse({"", user_acc}, _opts, {"", acc, _}, _handler),
	do: {acc, user_acc}

	defp do_parse({"<a" <> text, user_acc}, opts, {buffer, acc, :parsing}, handler),
	do: do_parse({text, user_acc}, opts, {"", acc <> buffer <> "<a", :skip}, handler)

	defp do_parse({"<pre" <> text, user_acc}, opts, {buffer, acc, :parsing}, handler),
	do: do_parse({text, user_acc}, opts, {"", acc <> buffer <> "<pre", :skip}, handler)

	defp do_parse({"<code" <> text, user_acc}, opts, {buffer, acc, :parsing}, handler),
	do: do_parse({text, user_acc}, opts, {"", acc <> buffer <> "<code", :skip}, handler)

	defp do_parse({"</a>" <> text, user_acc}, opts, {buffer, acc, :skip}, handler),
	do: do_parse({text, user_acc}, opts, {"", acc <> buffer <> "</a>", :parsing}, handler)

	defp do_parse({"</pre>" <> text, user_acc}, opts, {buffer, acc, :skip}, handler),
	do: do_parse({text, user_acc}, opts, {"", acc <> buffer <> "</pre>", :parsing}, handler)

	defp do_parse({"</code>" <> text, user_acc}, opts, {buffer, acc, :skip}, handler),
	do: do_parse({text, user_acc}, opts, {"", acc <> buffer <> "</code>", :parsing}, handler)

	defp do_parse({"<" <> text, user_acc}, opts, {"", acc, :parsing}, handler),
	do: do_parse({text, user_acc}, opts, {"<", acc, {:open, 1}}, handler)

	defp do_parse({"<" <> text, user_acc}, opts, {"", acc, {:html, level}}, handler) do
	do_parse({text, user_acc}, opts, {"<", acc, {:open, level + 1}}, handler)
	end

	defp do_parse({">" <> text, user_acc}, opts, {buffer, acc, {:attrs, level}}, handler),
	do:
	do_parse(
	{text, user_acc},
	opts,
	{"", acc <> buffer <> ">", {:html, level}},
	handler
	)

	defp do_parse({<<ch::8>> <> text, user_acc}, opts, {"", acc, {:attrs, level}}, handler) do
	do_parse({text, user_acc}, opts, {"", acc <> <<ch::8>>, {:attrs, level}}, handler)
	end

	defp do_parse({"</" <> text, user_acc}, opts, {buffer, acc, {:html, level}}, handler) do
	{buffer, user_acc} = run_handler(handler, buffer, opts, user_acc)

	do_parse(
	{text, user_acc},
	opts,
	{"", acc <> buffer <> "</", {:close, level}},
	handler
	)
	end

	defp do_parse({">" <> text, user_acc}, opts, {buffer, acc, {:close, 1}}, handler),
	do: do_parse({text, user_acc}, opts, {"", acc <> buffer <> ">", :parsing}, handler)

	defp do_parse({">" <> text, user_acc}, opts, {buffer, acc, {:close, level}}, handler),
	do:
	do_parse(
	{text, user_acc},
	opts,
	{"", acc <> buffer <> ">", {:html, level - 1}},
	handler
	)

	defp do_parse({text, user_acc}, opts, {buffer, acc, {:open, level}}, handler) do
	do_parse({text, user_acc}, opts, {"", acc <> buffer, {:attrs, level}}, handler)
	end

	# default cases where state is not important
	defp do_parse(
	{" " <> text, user_acc},
	%{phone: _} = opts,
	{buffer, acc, state},
	handler
	),
	do: do_parse({text, user_acc}, opts, {buffer <> " ", acc, state}, handler)

	defp do_parse(
	{<<char::bytes-size(1), text::binary>>, user_acc},
	opts,
	{buffer, acc, state},
	handler
	)
	when char in [" ", "\r", "\n"] do
	{buffer, user_acc} = run_handler(handler, buffer, opts, user_acc)

	do_parse(
	{text, user_acc},
	opts,
	{"", acc <> buffer <> char, state},
	handler
	)
	end

	defp do_parse({<<ch::8>>, user_acc}, opts, {buffer, acc, state}, handler) do
	{buffer, user_acc} = run_handler(handler, buffer <> <<ch::8>>, opts, user_acc)

	do_parse(
	{"", user_acc},
	opts,
	{"", acc <> buffer, state},
	handler
	)
	end

	defp do_parse({<<ch::8>> <> text, user_acc}, opts, {buffer, acc, state}, handler),
	do: do_parse({text, user_acc}, opts, {buffer <> <<ch::8>>, acc, state}, handler)

	def check_and_link(buffer, opts, _user_acc) do
	str = strip_parens(buffer)

	if url?(str, opts) do
	- case parse_link(str, opts) do
	+ case @match_url \|> Regex.run(str, capture: [:url]) \|> hd() do
	^buffer -> link_url(buffer, opts)
	url -> String.replace(buffer, url, link_url(url, opts))
	end
	else
	buffer
	end
	end

	- defp parse_link(str, %{scheme: true}) do
	- @match_scheme \|> Regex.run(str, capture: [:url]) \|> hd()
	- end
	-
	- defp parse_link(str, _), do: str
	-
	defp strip_parens("(" <> buffer) do
	~r/[^\)]*/ \|> Regex.run(buffer) \|> hd()
	end

	defp strip_parens(buffer), do: buffer

	def check_and_link_email(buffer, opts, _user_acc) do
	if email?(buffer, opts), do: link_email(buffer, opts), else: buffer
	end

	def check_and_link_phone(buffer, opts, _user_acc) do
	buffer
	\|> match_phone
	\|> link_phone(buffer, opts)
	end

	def check_and_link_mention(buffer, opts, user_acc) do
	buffer
	\|> match_mention
	\|> link_mention(buffer, opts, user_acc)
	end

	def check_and_link_hashtag(buffer, opts, user_acc) do
	buffer
	\|> match_hashtag
	\|> link_hashtag(buffer, opts, user_acc)
	end

	def check_and_link_extra("xmpp:" <> handle, opts, _user_acc) do
	if email?(handle, opts), do: link_extra("xmpp:" <> handle, opts), else: handle
	end

	def check_and_link_extra(buffer, opts, _user_acc) do
	if String.starts_with?(buffer, @prefix_extra), do: link_extra(buffer, opts), else: buffer
	end

	# @doc false

	def url?(buffer, opts) do
	- if opts[:scheme] do
	- valid_url?(buffer) && Regex.match?(@match_scheme, buffer) && valid_tld?(buffer, opts)
	- else
	- valid_url?(buffer) && Regex.match?(@match_url, buffer) && valid_tld?(buffer, opts)
	- end
	+ valid_url?(buffer) && Regex.match?(@match_url, buffer) && valid_tld?(buffer, opts)
	end

	def email?(buffer, opts) do
	valid_url?(buffer) && Regex.match?(@match_email, buffer) && valid_tld?(buffer, opts)
	end

	defp valid_url?(url), do: !Regex.match?(@invalid_url, url)

	def valid_tld?(buffer, opts) do
	+ [scheme, host] = Regex.run(@match_hostname, buffer, capture: [:scheme, :host])
	+
	cond do
	opts[:validate_tld] == false ->
	true

	- opts[:validate_tld] == :no_scheme && opts[:scheme] ->
	+ ip?(host) ->
	+ true
	+
	+ # don't validate if scheme is present
	+ opts[:validate_tld] == :no_scheme and scheme != "" ->
	true

	true ->
	- with [host] <- Regex.run(@match_hostname, buffer, capture: [:host]) do
	- if ip?(host) do
	- true
	- else
	- tld = host \|> String.split(".") \|> List.last()
	- MapSet.member?(@tlds, tld)
	- end
	- else
	- _ -> false
	- end
	+ tld = host \|> String.split(".") \|> List.last()
	+ MapSet.member?(@tlds, tld)
	end
	end

	def ip?(buffer), do: Regex.match?(@match_ip, buffer)

	@doc false
	def match_phone(buffer) do
	case Regex.scan(@match_phone, buffer) do
	[] -> nil
	other -> other
	end
	end

	def match_mention(buffer) do
	case Regex.run(@match_mention, buffer) do
	[mention] -> mention
	_ -> nil
	end
	end

	def match_hashtag(buffer) do
	case Regex.run(@match_hashtag, buffer, capture: [:tag]) do
	[hashtag] -> hashtag
	_ -> nil
	end
	end

	def link_hashtag(nil, buffer, _, _user_acc), do: buffer

	def link_hashtag(hashtag, buffer, %{hashtag_handler: hashtag_handler} = opts, user_acc) do
	hashtag
	\|> hashtag_handler.(buffer, opts, user_acc)
	\|> maybe_update_buffer(hashtag, buffer)
	end

	def link_hashtag(hashtag, buffer, opts, _user_acc) do
	hashtag
	\|> Builder.create_hashtag_link(buffer, opts)
	\|> maybe_update_buffer(hashtag, buffer)
	end

	def link_mention(nil, buffer, _, user_acc), do: {buffer, user_acc}

	def link_mention(mention, buffer, %{mention_handler: mention_handler} = opts, user_acc) do
	mention
	\|> mention_handler.(buffer, opts, user_acc)
	\|> maybe_update_buffer(mention, buffer)
	end

	def link_mention(mention, buffer, opts, _user_acc) do
	mention
	\|> Builder.create_mention_link(buffer, opts)
	\|> maybe_update_buffer(mention, buffer)
	end

	defp maybe_update_buffer(out, match, buffer) when is_binary(out) do
	maybe_update_buffer({out, nil}, match, buffer)
	end

	defp maybe_update_buffer({out, user_acc}, match, buffer)
	when match != buffer and out != buffer do
	out = String.replace(buffer, match, out)
	{out, user_acc}
	end

	defp maybe_update_buffer(out, _match, _buffer), do: out

	def link_phone(nil, buffer, _), do: buffer

	def link_phone(list, buffer, opts) do
	Builder.create_phone_link(list, buffer, opts)
	end

	@doc false
	def link_url(buffer, opts) do
	Builder.create_link(buffer, opts)
	end

	@doc false
	def link_email(buffer, opts) do
	Builder.create_email_link(buffer, opts)
	end

	def link_extra(buffer, opts) do
	Builder.create_extra_link(buffer, opts)
	end

	defp run_handler(handler, buffer, opts, user_acc) do
	case handler.(buffer, opts, user_acc) do
	{buffer, user_acc} -> {buffer, user_acc}
	buffer -> {buffer, user_acc}
	end
	end
	end
	diff --git a/test/auto_linker_test.exs b/test/auto_linker_test.exs
	index 9baf243..a21f009 100644
	--- a/test/auto_linker_test.exs
	+++ b/test/auto_linker_test.exs
	@@ -1,435 +1,430 @@
	defmodule AutoLinkerTest do
	use ExUnit.Case, async: true
	doctest AutoLinker

	test "phone number" do
	assert AutoLinker.link(", work (555) 555-5555", phone: true) ==
	~s{, work <a href="#" class="phone-number" data-phone="5555555555">(555) 555-5555</a>}
	end

	test "default link" do
	assert AutoLinker.link("google.com") ==
	"<a href=\"http://google.com\" class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\">google.com</a>"
	end

	test "does on link existing links" do
	text = ~s(<a href="http://google.com">google.com</a>)
	assert AutoLinker.link(text) == text
	end

	test "all kinds of links" do
	text = "hello google.com https://ddg.com 888 888-8888 user@email.com irc:///mIRC"

	expected =
	"hello <a href=\"http://google.com\">google.com</a> <a href=\"https://ddg.com\">ddg.com</a> <a href=\"#\" class=\"phone-number\" data-phone=\"8888888888\">888 888-8888</a> <a href=\"mailto:user@email.com\">user@email.com</a> <a href=\"irc:///mIRC\">irc:///mIRC</a>"

	assert AutoLinker.link(text,
	phone: true,
	email: true,
	- scheme: true,
	extra: true,
	class: false,
	new_window: false,
	rel: false
	) == expected
	end

	test "rel as function" do
	text = "google.com"

	expected = "<a href=\"http://google.com\" rel=\"com\">google.com</a>"

	custom_rel = fn url ->
	url \|> String.split(".") \|> List.last()
	end

	assert AutoLinker.link(text,
	class: false,
	new_window: false,
	rel: custom_rel
	) == expected

	text = "google.com"

	expected = "<a href=\"http://google.com\">google.com</a>"

	custom_rel = fn _ -> nil end

	assert AutoLinker.link(text,
	class: false,
	new_window: false,
	rel: custom_rel
	) == expected
	end

	test "link_map/2" do
	assert AutoLinker.link_map("google.com", []) ==
	{"<a href=\"http://google.com\" class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\">google.com</a>",
	[]}
	end

	describe "custom handlers" do
	test "mentions handler" do
	text = "hello @user, @valid_user and @invalid_user"
	valid_users = ["user", "valid_user"]

	handler = fn "@" <> user = mention, buffer, _opts, acc ->
	if Enum.member?(valid_users, user) do
	link = ~s(<a href="https://example.com/user/#{user}" data-user="#{user}">#{mention}</a>)
	{link, %{acc \| mentions: MapSet.put(acc.mentions, {mention, user})}}
	else
	{buffer, acc}
	end
	end

	{result_text, %{mentions: mentions}} =
	AutoLinker.link_map(text, %{mentions: MapSet.new()},
	mention: true,
	mention_handler: handler
	)

	assert result_text ==
	"hello <a href=\"https://example.com/user/user\" data-user=\"user\">@user</a>, <a href=\"https://example.com/user/valid_user\" data-user=\"valid_user\">@valid_user</a> and @invalid_user"

	assert mentions \|> MapSet.to_list() \|> Enum.map(&elem(&1, 1)) == valid_users
	end

	test "hashtags handler" do
	text = "#hello #world"

	handler = fn hashtag, buffer, opts, acc ->
	link = AutoLinker.Builder.create_hashtag_link(hashtag, buffer, opts)
	{link, %{acc \| tags: MapSet.put(acc.tags, hashtag)}}
	end

	{result_text, %{tags: tags}} =
	AutoLinker.link_map(text, %{tags: MapSet.new()},
	hashtag: true,
	hashtag_handler: handler,
	hashtag_prefix: "https://example.com/user/",
	class: false,
	new_window: false,
	rel: false
	)

	assert result_text ==
	"<a href=\"https://example.com/user/hello\">#hello</a> <a href=\"https://example.com/user/world\">#world</a>"

	assert MapSet.to_list(tags) == ["#hello", "#world"]
	end

	test "mention handler and hashtag prefix" do
	text =
	"Hello again, @user.<script></script>\nThis is on another :moominmamma: line. #2hu #epic #phantasmagoric"

	handler = fn "@" <> user = mention, _, _, _ ->
	~s(<span class="h-card"><a href="#/user/#{user}">@<span>#{mention}</span></a></span>)
	end

	expected =
	~s(Hello again, <span class="h-card"><a href="#/user/user">@<span>@user</span></a></span>.<script></script>\nThis is on another :moominmamma: line. <a href="/tag/2hu" class="auto-linker" target="_blank" rel="noopener noreferrer">#2hu</a> <a href="/tag/epic" class="auto-linker" target="_blank" rel="noopener noreferrer">#epic</a> <a href="/tag/phantasmagoric" class="auto-linker" target="_blank" rel="noopener noreferrer">#phantasmagoric</a>)

	assert AutoLinker.link(text,
	mention: true,
	mention_handler: handler,
	hashtag: true,
	hashtag_prefix: "/tag/"
	) == expected
	end
	end

	describe "mentions" do
	test "simple mentions" do
	expected =
	~s{hello <a href="https://example.com/user/user" class="auto-linker" target="_blank" rel="noopener noreferrer">@user</a> and <a href="https://example.com/user/anotherUser" class="auto-linker" target="_blank" rel="noopener noreferrer">@anotherUser</a>.}

	assert AutoLinker.link("hello @user and @anotherUser.",
	mention: true,
	mention_prefix: "https://example.com/user/"
	) == expected
	end

	test "mentions inside html tags" do
	text =
	"<p><strong>hello world</strong></p>\n<p><`em>another @user__test and @user__test google.com paragraph</em></p>\n"

	expected =
	"<p><strong>hello world</strong></p>\n<p><`em>another <a href=\"u/user__test\">@user__test</a> and <a href=\"u/user__test\">@user__test</a> <a href=\"http://google.com\">google.com</a> paragraph</em></p>\n"

	assert AutoLinker.link(text,
	mention: true,
	mention_prefix: "u/",
	class: false,
	rel: false,
	new_window: false
	) == expected
	end

	test "metion @user@example.com" do
	text = "hey @user@example.com"

	expected =
	"hey <a href=\"https://example.com/user/user@example.com\" class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\">@user@example.com</a>"

	assert AutoLinker.link(text,
	mention: true,
	mention_prefix: "https://example.com/user/"
	) == expected
	end
	end

	describe "hashtag links" do
	test "hashtag" do
	expected =
	" one <a href=\"https://example.com/tag/2two\" class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\">#2two</a> three <a href=\"https://example.com/tag/four\" class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\">#four</a>."

	assert AutoLinker.link(" one #2two three #four.",
	hashtag: true,
	hashtag_prefix: "https://example.com/tag/"
	) == expected
	end

	test "must have non-numbers" do
	expected = "<a href=\"/t/1ok\">#1ok</a> #42 #7"

	assert AutoLinker.link("#1ok #42 #7",
	hashtag: true,
	hashtag_prefix: "/t/",
	class: false,
	rel: false,
	new_window: false
	) == expected
	end

	test "support French" do
	text = "#administrateur·rice·s #ingénieur·e·s"

	expected =
	"<a href=\"/t/administrateur·rice·s\">#administrateur·rice·s</a> <a href=\"/t/ingénieur·e·s\">#ingénieur·e·s</a>"

	assert AutoLinker.link(text,
	hashtag: true,
	hashtag_prefix: "/t/",
	class: false,
	rel: false,
	new_window: false
	) == expected
	end

	test "support Telugu" do
	text = "#చక్రం #కకకకక్ #కకకకాక #కకకక్రకకకక"

	expected =
	"<a href=\"/t/చక్రం\">#చక్రం</a> <a href=\"/t/కకకకక్\">#కకకకక్</a> <a href=\"/t/కకకకాక\">#కకకకాక</a> <a href=\"/t/కకకక్రకకకక\">#కకకక్రకకకక</a>"

	assert AutoLinker.link(text,
	hashtag: true,
	hashtag_prefix: "/t/",
	class: false,
	rel: false,
	new_window: false
	) == expected
	end

	test "do not turn urls with hashes into hashtags" do
	text = "google.com#test #test google.com/#test #tag"

	expected =
	"<a href=\"http://google.com#test\">google.com#test</a> <a href=\"https://example.com/tag/test\">#test</a> <a href=\"http://google.com/#test\">google.com/#test</a> <a href=\"https://example.com/tag/tag\">#tag</a>"

	assert AutoLinker.link(text,
	- scheme: true,
	hashtag: true,
	class: false,
	new_window: false,
	rel: false,
	hashtag_prefix: "https://example.com/tag/"
	) == expected
	end

	test "works with non-latin characters" do
	text = "#漢字 #は #тест #ทดสอบ"

	expected =
	"<a href=\"https://example.com/tag/漢字\">#漢字</a> <a href=\"https://example.com/tag/は\">#は</a> <a href=\"https://example.com/tag/тест\">#тест</a> <a href=\"https://example.com/tag/ทดสอบ\">#ทดสอบ</a>"

	assert AutoLinker.link(text,
	- scheme: true,
	class: false,
	new_window: false,
	rel: false,
	hashtag: true,
	hashtag_prefix: "https://example.com/tag/"
	) == expected
	end
	end

	describe "links" do
	test "turning urls into links" do
	text = "Hey, check out http://www.youtube.com/watch?v=8Zg1-TufF%20zY?x=1&y=2#blabla ."

	expected =
	"Hey, check out <a href=\"http://www.youtube.com/watch?v=8Zg1-TufF%20zY?x=1&y=2#blabla\" class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\">youtube.com/watch?v=8Zg1-TufF%20zY?x=1&y=2#blabla</a> ."

	- assert AutoLinker.link(text, scheme: true) == expected
	+ assert AutoLinker.link(text) == expected

	# no scheme
	text = "Hey, check out www.youtube.com/watch?v=8Zg1-TufF%20zY?x=1&y=2#blabla ."
	- assert AutoLinker.link(text, scheme: true) == expected
	+ assert AutoLinker.link(text) == expected
	end

	test "turn urls with schema into urls" do
	text = "📌https://google.com"
	expected = "📌<a href=\"https://google.com\">google.com</a>"

	- assert AutoLinker.link(text, scheme: true, class: false, new_window: false, rel: false) ==
	- expected
	+ assert AutoLinker.link(text, class: false, new_window: false, rel: false) == expected
	end

	test "hostname/@user" do
	text = "https://example.com/@user"

	expected =
	"<a href=\"https://example.com/@user\" class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\">example.com/@user</a>"

	- assert AutoLinker.link(text, scheme: true) == expected
	+ assert AutoLinker.link(text) == expected

	text = "https://example.com:4000/@user"

	expected =
	"<a href=\"https://example.com:4000/@user\" class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\">example.com:4000/@user</a>"

	- assert AutoLinker.link(text, scheme: true) == expected
	+ assert AutoLinker.link(text) == expected

	text = "https://example.com:4000/@user"

	expected =
	"<a href=\"https://example.com:4000/@user\" class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\">example.com:4000/@user</a>"

	- assert AutoLinker.link(text, scheme: true) == expected
	+ assert AutoLinker.link(text) == expected

	text = "@username"
	expected = "@username"
	- assert AutoLinker.link(text, scheme: true) == expected
	+ assert AutoLinker.link(text) == expected

	text = "http://www.cs.vu.nl/~ast/intel/"

	expected =
	"<a href=\"http://www.cs.vu.nl/~ast/intel/\" class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\">cs.vu.nl/~ast/intel/</a>"

	- assert AutoLinker.link(text, scheme: true) == expected
	+ assert AutoLinker.link(text) == expected

	text = "https://forum.zdoom.org/viewtopic.php?f=44&t=57087"

	expected =
	"<a href=\"https://forum.zdoom.org/viewtopic.php?f=44&t=57087\" class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\">forum.zdoom.org/viewtopic.php?f=44&t=57087</a>"

	- assert AutoLinker.link(text, scheme: true) == expected
	+ assert AutoLinker.link(text) == expected

	text = "https://en.wikipedia.org/wiki/Sophia_(Gnosticism)#Mythos_of_the_soul"

	expected =
	"<a href=\"https://en.wikipedia.org/wiki/Sophia_(Gnosticism)#Mythos_of_the_soul\" class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\">en.wikipedia.org/wiki/Sophia_(Gnosticism)#Mythos_of_the_soul</a>"

	- assert AutoLinker.link(text, scheme: true) == expected
	+ assert AutoLinker.link(text) == expected

	text = "https://en.wikipedia.org/wiki/Duff's_device"

	expected =
	"<a href=\"https://en.wikipedia.org/wiki/Duff's_device\" class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\">en.wikipedia.org/wiki/Duff's_device</a>"

	- assert AutoLinker.link(text, scheme: true) == expected
	+ assert AutoLinker.link(text) == expected
	end
	end

	describe "non http links" do
	test "xmpp" do
	text = "xmpp:user@example.com"

	expected =
	"<a href=\"xmpp:user@example.com\" class=\"auto-linker\">xmpp:user@example.com</a>"

	assert AutoLinker.link(text, extra: true, new_window: false, rel: false) == expected
	end

	test "email" do
	text = "user@example.com"
	expected = "<a href=\"mailto:user@example.com\" class=\"auto-linker\">user@example.com</a>"
	assert AutoLinker.link(text, email: true) == expected
	end

	test "magnet" do
	text =
	"magnet:?xt=urn:btih:a4104a9d2f5615601c429fe8bab8177c47c05c84&dn=ubuntu-18.04.1.0-live-server-amd64.iso&tr=http%3A%2F%2Ftorrent.ubuntu.com%3A6969%2Fannounce&tr=http%3A%2F%2Fipv6.torrent.ubuntu.com%3A6969%2Fannounce"

	expected =
	"<a href=\"magnet:?xt=urn:btih:a4104a9d2f5615601c429fe8bab8177c47c05c84&dn=ubuntu-18.04.1.0-live-server-amd64.iso&tr=http%3A%2F%2Ftorrent.ubuntu.com%3A6969%2Fannounce&tr=http%3A%2F%2Fipv6.torrent.ubuntu.com%3A6969%2Fannounce\" class=\"auto-linker\">magnet:?xt=urn:btih:a4104a9d2f5615601c429fe8bab8177c47c05c84&dn=ubuntu-18.04.1.0-live-server-amd64.iso&tr=http%3A%2F%2Ftorrent.ubuntu.com%3A6969%2Fannounce&tr=http%3A%2F%2Fipv6.torrent.ubuntu.com%3A6969%2Fannounce</a>"

	assert AutoLinker.link(text, extra: true, new_window: false, rel: false) == expected
	end

	test "dweb" do
	text =
	"dweb://584faa05d394190ab1a3f0240607f9bf2b7e2bd9968830a11cf77db0cea36a21+v1.0.0/path/to/file.txt"

	expected =
	"<a href=\"dweb://584faa05d394190ab1a3f0240607f9bf2b7e2bd9968830a11cf77db0cea36a21+v1.0.0/path/to/file.txt\" class=\"auto-linker\">dweb://584faa05d394190ab1a3f0240607f9bf2b7e2bd9968830a11cf77db0cea36a21+v1.0.0/path/to/file.txt</a>"

	assert AutoLinker.link(text, extra: true, new_window: false, rel: false) == expected
	end
	end

	describe "TLDs" do
	test "parse with scheme" do
	text = "https://google.com"

	expected =
	"<a href=\"https://google.com\" class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\">google.com</a>"

	- assert AutoLinker.link(text, scheme: true) == expected
	+ assert AutoLinker.link(text) == expected
	end

	test "only existing TLDs with scheme" do
	text = "this url https://google.foobar.blah11blah/ has invalid TLD"

	expected = "this url https://google.foobar.blah11blah/ has invalid TLD"
	- assert AutoLinker.link(text, scheme: true) == expected
	+ assert AutoLinker.link(text) == expected

	text = "this url https://google.foobar.com/ has valid TLD"

	expected =
	"this url <a href=\"https://google.foobar.com/\" class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\">google.foobar.com/</a> has valid TLD"

	- assert AutoLinker.link(text, scheme: true) == expected
	+ assert AutoLinker.link(text) == expected
	end

	test "only existing TLDs without scheme" do
	text = "this url google.foobar.blah11blah/ has invalid TLD"
	- expected = "this url google.foobar.blah11blah/ has invalid TLD"
	- assert AutoLinker.link(text, scheme: false) == expected
	+ assert AutoLinker.link(text) == text

	text = "this url google.foobar.com/ has valid TLD"

	expected =
	"this url <a href=\"http://google.foobar.com/\" class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\">google.foobar.com/</a> has valid TLD"

	- assert AutoLinker.link(text, scheme: false) == expected
	+ assert AutoLinker.link(text) == expected
	end

	test "only existing TLDs with and without scheme" do
	text = "this url http://google.foobar.com/ has valid TLD"

	expected =
	"this url <a href=\"http://google.foobar.com/\" class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\">google.foobar.com/</a> has valid TLD"

	- assert AutoLinker.link(text, scheme: true) == expected
	+ assert AutoLinker.link(text) == expected

	text = "this url google.foobar.com/ has valid TLD"

	expected =
	"this url <a href=\"http://google.foobar.com/\" class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\">google.foobar.com/</a> has valid TLD"

	- assert AutoLinker.link(text, scheme: true) == expected
	+ assert AutoLinker.link(text) == expected
	end
	end
	end

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