This is a http://www.google.com URL and https://www.google.com This is a ftp://test.com And a email@toto.com And a +1555123456 And a plain www.google.com
```````````````````````````````` But incomplete links will not be matched: ```````````````````````````````` example This is not a http:/www.google.com URL and https:/www.google.com This is not a ftp:/test.com And not a mailto:emailtoto.com And not a plain www. or a www.x And not a tel: .This is not a http:/www.google.com URL and https:/www.google.com This is not a ftp:/test.com And not a mailto:emailtoto.com And not a plain www. or a www.x And not a tel:
```````````````````````````````` Previous character must be a punctuation or a valid space (tab, space, new line): ```````````````````````````````` example This is not a nhttp://www.google.com URL but this is (https://www.google.com) .This is not a nhttp://www.google.com URL but this is (https://www.google.com)
```````````````````````````````` An autolink should not interfere with an `` HTML inline: ```````````````````````````````` example This is an HTML http://www.google.com link .This is an HTML http://www.google.com link
```````````````````````````````` or even within emphasis: ```````````````````````````````` example This is an HTML **http://www.google.com** link .This is an HTML http://www.google.com link
```````````````````````````````` An autolink should not interfere with a markdown link: ```````````````````````````````` example This is an HTML [http://www.google.com](http://www.google.com) link .This is an HTML http://www.google.com link
```````````````````````````````` A link embraced by pending emphasis should let the emphasis takes precedence if characters are placed at the end of the matched link: ```````````````````````````````` example Check **http://www.a.com** or __http://www.b.com__ .Check http://www.a.com or http://www.b.com
```````````````````````````````` It is not mentioned by the spec, but empty emails won't be matched (only a subset of [RFC2368](https://tools.ietf.org/html/rfc2368) is supported by auto links): ```````````````````````````````` example mailto:email@test.com is okay, but mailto:@test.com is not .email@test.com is okay, but mailto:@test.com is not
```````````````````````````````` ### GFM Support Extract from [GFM Autolinks extensions specs](https://github.github.com/gfm/#autolinks-extension-) ```````````````````````````````` example www.commonmark.org . ```````````````````````````````` ```````````````````````````````` example Visit www.commonmark.org/help for more information. .Visit www.commonmark.org/help for more information.
```````````````````````````````` ```````````````````````````````` example Visit www.commonmark.org. Visit www.commonmark.org/a.b. .Visit www.commonmark.org.
Visit www.commonmark.org/a.b.
```````````````````````````````` ```````````````````````````````` example www.google.com/search?q=Markup+(business) (www.google.com/search?q=Markup+(business)) .www.google.com/search?q=Markup+(business)
(www.google.com/search?q=Markup+(business))
```````````````````````````````` ```````````````````````````````` example www.google.com/search?q=commonmark&hl=en www.google.com/search?q=commonmark&hl; .www.google.com/search?q=commonmark&hl=en
www.google.com/search?q=commonmark&hl;
```````````````````````````````` ```````````````````````````````` example www.commonmark.org/he(Visit https://encrypted.google.com/search?q=Markup+(business))
Anonymous FTP is available at ftp://foo.bar.baz.
```````````````````````````````` ### Valid Domain Tests Domain names that have empty segments won't be matched ```````````````````````````````` example www.. www..com http://test. http://.test http://. http://.. ftp://test. ftp://.test mailto:email@test. mailto:email@.test .www.. www..com http://test. http://.test http://. http://.. ftp://test. ftp://.test mailto:email@test. mailto:email@.test
```````````````````````````````` Domain names with too few segments won't be matched ```````````````````````````````` example www www.com http://test ftp://test mailto:email@test .www www.com http://test ftp://test mailto:email@test
```````````````````````````````` Domain names that contain an underscores in the last two segments won't be matched ```````````````````````````````` example www._test.foo.bar is okay, but www._test.foo is not http://te_st.foo.bar is okay, as is http://test.foo_.bar.foo But http://te_st.foo, http://test.foo_.bar and http://test._foo are not ftp://test_.foo.bar is okay, but ftp://test.fo_o is not mailto:email@_test.foo.bar is okay, but mailto:email@_test.foo is not .www._test.foo.bar is okay, but www._test.foo is not
http://te_st.foo.bar is okay, as is http://test.foo_.bar.foo
But http://te_st.foo, http://test.foo_.bar and http://test._foo are not
ftp://test_.foo.bar is okay, but ftp://test.fo_o is not
email@_test.foo.bar is okay, but mailto:email@_test.foo is not
```````````````````````````````` Domain names that contain invalid characters (not AlphaNumberic, -, _ or .) won't be matched ```````````````````````````````` example https://[your-domain]/api .https://[your-domain]/api
```````````````````````````````` Domain names followed by ?, : or # instead of / are matched ```````````````````````````````` example https://github.com? https://github.com?a https://github.com#a https://github.com: https://github.com:443 . ```````````````````````````````` ### Unicode support Links with unicode characters in the path / query / fragment are matched and url encoded ```````````````````````````````` example http://abc.net/☃ http://abc.net?☃ http://abc.net#☃ http://abc.net/foo#☃ . ```````````````````````````````` Unicode characters in the FQDN are matched and IDNA encoded ```````````````````````````````` example http://☃.net?☃ . ```````````````````````````````` Same goes for regular autolinks ```````````````````````````````` example