6.5 Autolinks (mdx 不支持了）

以下是一些有效的自动链接：

Example 594Try It
示例594试一试
http://foo.bar.baz

http://foo.bar.baz

Example 595Try It 例如：试试看

https://foo.bar.baz/test?q=hello&id=22&boolean

Example 596Try It 例如：试试看

irc://foo.bar:2233/baz

Uppercase is also fine: 大写字母也可以：

Example 597Try It
例句：试试看
MAILTO:FOO@BAR.BAZ

MAILTO:FOO@BAR.BAZ

Note that many strings that count as absolute URIs for purposes of this spec are not valid URIs, because their schemes are not registered or because of other problems with their syntax: 请注意，对于本规范而言，许多被视为绝对URI的字符串都不是有效的URI，因为它们的方案没有注册，或者因为它们的语法存在其他问题：

Example 598Try It
例如：试试看
a+b+c:d

a+b+c:d

Example 599Try It 例句599试一下

made-up-scheme://foo,bar

Example 600Try It 第600章试一试

https://../

Example 601Try It 例601试一试

localhost:5001/foo

Spaces are not allowed in autolinks: 自动链接中不允许使用空格：

Example 602Try It
例602试一试
<https://foo.bar/baz bim>

<https://foo.bar/baz bim>

Backslash-escapes do not work inside autolinks: 反斜杠-转义在自动链接中不起作用：

Example 603Try It
例句603试一下
https://example.com/\[\

https://example.com/\[\

An email autolink consists of <, followed by an email address, followed by >. The link’s label is the email address, and the URL is mailto: followed by the email address. 电子邮件自动链接由 < 、电子邮件地址和 > 组成。链接的标签是电子邮件地址，URL是 mailto: ，后跟电子邮件地址。

An email address, for these purposes, is anything that matches the non-normative regex from the HTML5 spec:
对于这些目的，电子邮件地址是与HTML5规范中的非标准化正则表达式匹配的任何内容：

/^[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])?)*/
Examples of email autolinks:
电子邮件自动链接的示例：

Example 604Try It
例句604试试看
foo@bar.example.com

foo@bar.example.com

Example 605Try It 例句605试一试

foo+special@Bar.baz-bar0.com

Backslash-escapes do not work inside email autolinks: 反斜杠-转义在电子邮件自动链接中不起作用：

Example 606Try It
例句606试一试
<foo+@bar.example.com>

<foo+@bar.example.com>

These are not autolinks: 这些不是自动链接：

Example 607Try It
例句607试一下
<>

<>

Example 608Try It 例句608试一试 < https://foo.bar >

< https://foo.bar >

Example 609Try It 例609试一试

<m:abc>

Example 610Try It 例句：试一下

<foo.bar.baz>

Example 611Try It 例句：试一下 https://example.com

https://example.com

Example 612Try It 试试看 foo@bar.example.com

foo@bar.example.com