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permissive-email-autolinks.txt (1511B)
1
2 # Permissive E-mail Autolinks
3
4 With the flag `MD_FLAG_PERMISSIVEEMAILAUTOLINKS`, MD4C enables more permissive
5 recognition of e-mail addresses and transforms them to autolinks, even if they
6 do not exactly follow the syntax of autolink as specified in CommonMark
7 specification.
8
9 This is standard CommonMark e-mail autolink:
10
11 ```````````````````````````````` example
12 E-mail: <mailto:john.doe@gmail.com>
13 .
14 <p>E-mail: <a href="mailto:john.doe@gmail.com">mailto:john.doe@gmail.com</a></p>
15 ````````````````````````````````
16
17 With the permissive autolinks enabled, this is sufficient:
18
19 ```````````````````````````````` example
20 E-mail: john.doe@gmail.com
21 .
22 <p>E-mail: <a href="mailto:john.doe@gmail.com">john.doe@gmail.com</a></p>
23 ````````````````````````````````
24
25 `+` can occur before the `@`, but not after.
26
27 ```````````````````````````````` example
28 hello@mail+xyz.example isn't valid, but hello+xyz@mail.example is.
29 .
30 <p>hello@mail+xyz.example isn't valid, but <a href="mailto:hello+xyz@mail.example">hello+xyz@mail.example</a> is.</p>
31 ````````````````````````````````
32
33 `.`, `-`, and `_` can occur on both sides of the `@`, but only `.` may occur at
34 the end of the email address, in which case it will not be considered part of
35 the address:
36
37 ```````````````````````````````` example
38 a.b-c_d@a.b
39
40 a.b-c_d@a.b.
41
42 a.b-c_d@a.b-
43
44 a.b-c_d@a.b_
45 .
46 <p><a href="mailto:a.b-c_d@a.b">a.b-c_d@a.b</a></p>
47 <p><a href="mailto:a.b-c_d@a.b">a.b-c_d@a.b</a>.</p>
48 <p>a.b-c_d@a.b-</p>
49 <p>a.b-c_d@a.b_</p>
50 ````````````````````````````````