wp_extract_urls recognize a date as a url

[sergej.mueller]

wp_extract_urls("Today's Date: 05.12.2014")

has the following array as output

Array ( [0] => 05.12.2014 )

A date is not an IP address.

[SergeyBiryukov]

Introduced in [25313].

[sergej.mueller]

URL scheme-less check

[hinnerk]

Added test cases, more readable regexp

[hinnerk]

The function still will not extract "​http://localhost/" as a "." is mandatory.
#WCHH14

[wonderboymusic]

In 28882:

wp_extract_urls() should not match dates.

Updates unit tests.

Props hinnerk, sergej.mueller.
Fixes #28222.

[kovshenin]

In r28882 since you're doing concatenation in PHP, you don't really need the x preg pattern modifier.

[SergeyBiryukov]

Replying to kovshenin:

In r28882 since you're doing concatenation in PHP, you don't really need the x preg pattern modifier.

There are some new spaces in the regex itself, perhaps for better readability. I don't think they're necessary though.

[hinnerk]

I've added the /x modifier for better readability, only. I prefer doing this in longer regular expressions.
All whitespaces in the pattern are totally ignored (see ​http://www.php.net/manual/en/reference.pcre.pattern.modifiers.php).

If you don't like, I will strip it.

[kovshenin]

Replying to SergeyBiryukov:

I don't think they're necessary though.

You're right, I missed those. I agree re necessity, I spotted 6 of them. The x modifier would be more useful if the regex was indeed a single string. So either concatenate with PHP and remove whitespace and the x modifier, or keep the x modifier and remove PHP newline concatenation, but not both.

[SergeyBiryukov]

In 28933:

Remove free-spacing modifier and extra spaces from wp_extract_urls() pattern.

fixes #28222.