ruby.git/lib/uri/mailto.rb, branch v4.0.4

[ruby/uri] Re-allow consecutive, leading and trailing dots in EMAIL_REGEXP

2025-11-04T06:45:16+00:00

Effectively reverts commit https://github.com/ruby/uri/commit/788274b180d6 and
https://github.com/ruby/uri/commit/0abac721d8fe.

EMAIL_REGEXP was mostly drawn from WHATWG HTML LS. This spec states that
it intentionally violates RFC 5322 to provide a practical regex for
validation.

> This requirement is a willful violation of RFC 5322, which defines a
> syntax for email addresses that is simultaneously too strict (before the
> "@" character), too vague (after the "@" character), and too lax
> (allowing comments, whitespace characters, and quoted strings in manners
> unfamiliar to most users) to be of practical use here.

The allowing of consecutive dot s(`a..a@`) and leading/trailing dots
(`.a@`, `a.@`) is not the only derivation from RFC 5322. If a truly RFC
5322-compliant regexp is needed, tt should be organized under a
different name, since too much departure from the original EMAIL_REGEXP
must be introduced.

https://github.com/ruby/uri/commit/c551d7020b

[ruby/uri] Improve performance of `URI::MailTo::EMAIL_REGEXP`

2025-07-12T10:32:48+00:00

Fix the performance regression at #172 for valid emails.

``` yml
prelude: |
  require 'uri/mailto'
  n = 1000
  re = URI::MailTo::EMAIL_REGEXP
benchmark:
  n.t..t.: re.match?("n.t..t.@docomo.ne.jp")
  example: re.match?("example@example.info")
```

|         |released| 788274b| c5974f0|    this|
|:--------|-------:|-------:|-------:|-------:|
|n.t..t.  |  3.795M|  4.864M|  4.993M|  8.739M|
|         |       -|   1.28x|   1.32x|   2.30x|
|example  |  3.911M|  3.740M|  2.838M|  3.880M|
|         |   1.38x|   1.32x|       -|   1.37x|

https://github.com/ruby/uri/commit/7363a134ac

[ruby/uri] Prohibit successive dots in email

2025-07-12T07:07:05+00:00

https://github.com/ruby/uri/commit/32335923bf

[ruby/uri] lib/uri/mailto.rb (EMAIL_REGEXP): use assertions surrounding the local part instead of a character class

2025-07-12T03:31:54+00:00

https://github.com/ruby/uri/commit/2d7d2d9988

[ruby/uri] lib/uri/mailto.rb (EMAIL_REGEXP): the local part should not contain leading or trailing dots

2025-07-12T03:31:53+00:00

https://github.com/ruby/uri/commit/618e2bb640

[ruby/uri] Include RFC2396_REGEXP module directly

2022-04-22T03:00:14+00:00

REGEXP is defined as RFC2396_REGEXP in lib/uri/common.rb. If we include
REGEXP then a broken URL is generated in rdoc for URI and URI::MailTo.

https://github.com/ruby/uri/commit/ed6ded9c80

[ruby/uri] Add proper Ractor support to URI

2021-07-27T07:54:27+00:00

* Using a module to map scheme name to scheme class, which also works with Ractor.
* No constant redefinition, no ObjectSpace, still fast lookup for initial schemes.

https://github.com/ruby/uri/commit/883567fd81

[ruby/uri] Revert "Fix to support Ruby 3.0 Ractor"

2021-07-27T07:54:26+00:00

* This reverts commit 1faa4fdc161d7aeebdb5de0c407b923beaecf898.
* It has too many problems, see https://github.com/ruby/uri/pull/22 for discussion.

https://github.com/ruby/uri/commit/b959da2dc9

[ruby/uri] Fix to support Ruby 3.0 Ractor

2021-07-27T07:54:26+00:00

https://github.com/ruby/uri/commit/1faa4fdc16

[ruby/uri] Remove RCS keywords

2020-03-26T09:06:14+00:00

https://github.com/ruby/uri/commit/1bcb1203ad