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# truncate_text()
 -  does nothing on an empty string
 -  truncates to 30 characters by default
 -  adds ... to truncated text
 -  takes the max length as its second argument
 -  takes the ... text as its third argument
 -  accepts a truncate lastspace boolean as its fourth argument
 -  accepts a truncate lastspace boolean as its fourth argument
 -  handles unicode characters using mbstring if available
 -  sets back the internal encoding in case it changes it
# highlight_text()
 -  highlights a word given as its second argument
 -  highlights all occurrences of a word given as its second argument
 -  takes a pattern as its third argument
 -  returns an empty string if input is empty
 -  returns an empty string if input is empty
 -  does nothing is string to highlight is not present
 -  returns input if string to highlight is not present
 -  escapes search string to be safe in a regex
 -  escapes search string to be safe in a regex
 -  escapes search string to be safe in a regex
 -  escapes search string to be safe in a regex
# excerpt_text()
 -  return an empty string if argument is empty
 -  return an empty string if phrase is empty
 -  creates an excerpt of a text
 -  creates an excerpt of a text
 -  creates an excerpt of a text
 -  takes a fifth argument allowing excerpt on whitespace
 -  takes a fifth argument allowing excerpt on whitespace
 -  takes a fifth argument allowing excerpt on whitespace
 -  does nothing if the search string is not in input
# wrap_text()
 -  wraps long lines with a default of 80
 -  takes a line length as its second argument
 -  takes a line length as its second argument
# simple_format_text()
 -  replaces \n by <br />
 -  replaces \n\n by <p>
 -  replaces \n\n\n\n by <p>
 -  wrap all string with <p>
 -  Ticket #6824
# text_strip_links()
 -  strips all links in input
 -  strips all links in input
# auto_link_text()
 -  converts emails to links
 -  converts absolute URLs to links
 -  takes a second parameter
 -  converts emails and URLs if no second argument is given
 -  converts URLs to links
 -  converts URLs to links
 -  converts URLs to links even if link does not start with http://
 -  converts URLs to links
 -  converts URLs to links
 -  converts URLs to links
 -  converts URLs to links
 -  truncates URLs in links
 -  takes truncation parameters
 -  converts URLs with complex fragments to links
 -  converts URLs with complex fragments and trailing text to links
 -  does not double-link emails
 -  does not double-link emails
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