Clickable actions for bbp_make_clickable are broken

[GDragoN]

So, I have found that clickable functions are very wrong in some cases. The first screenshot shows the content of the topic, including email as a plain text, and the second one includes email inside the [email] shortcode that takes that email and turns it into the clickable link with mailto: included. Second screenshot shows the rendered content, and thrid one is actual HTML produced after all this.

The problem here is that forum has a user with username 'dev4press', so the @dev4press triggers the clickable action for mentions.

None of these clickable filters should be triggered when dealing with HTML tags, they only should work with the plain text. And, when running one after the other, they need to be aware that the content is changed: 'bbp_make_emails_clickable is run first, and it turns email into HTML tag after that 'bbp_make_mentions_clickable' is run, and now the content is with HTML tag, but the 'bbp_make_mentions_clickable' doesn't check for that, and it messes everything up.

[johnjamesjacoby]

Initial patch attached:

• Updates the regular expression to use an approach similar to WordPress _make_ callbacks
• Adds some preliminary safeguarding against malformed values
• Separates classes from filter
• Adds user object to filter
• Avoids a potentially empty class="" attribute if filters remove all classes
• Adds a bit more inline documentation

[johnjamesjacoby]

In 7082:

Formatting: tweak regular expression for @ mentions.

This commit fixes a bug causing usernames to be made clickable even after they were already made clickable previously by the email address filter.

In 2.6 branch, for 2.6.5.

See #3371.

[johnjamesjacoby]

In 7083:

Formatting: tweak regular expression for @ mentions.

This commit fixes a bug causing usernames to be made clickable even after they were already made clickable previously by the email address filter.

In trunk, for 2.7.0.

See #3371.

[johnjamesjacoby]

Committed my patch so that we could more easily see it in action, specifically across WordPress.org.

@GDragoN I'd love your eyes on this, especially with your [email] shortcode use case. And thank you for reporting this and for the screenshots! 👍