Function: Returns the regexp for common whitespace characters.

Function: Prints the important emoji-related styles.

Function: Callback to add a target attribute to all links in passed content.

Function: Normalizes EOL characters and strips duplicate whitespace.

Function: Properly strips all HTML tags including script and style

Function: Sanitizes a string from user input or from the database.

Function: Sanitizes a multiline string from user input or from the database.

Function: Localizes list items before the rest of the content.

Function: Safely extracts not more than the first $count characters from HTML string.

Function: Adds a base URL to relative links in passed content.