Redmine

    h(

      # Limit input to avoid regex performance issues

      text.to_s.slice(0, 10240)

      # Abbreviate consecutive quoted lines as '> ...'

      .gsub(%r{(^>.*?(?:\r?\n))(?:>.*?(?:\r?\n)+)+}m, "\\1> ...\n")

      # Remove all content following the first <pre> or <code> tag

      .sub(%r{[\r\n]*<(pre|code)>.*$}m, '')

      # Truncate the description to a specified length and append '...'

      .truncate(240)

    ).gsub(/[\r\n]+/, "<br>").html_safe

  def test_format_activity_description_should_strip_quoted_text

    text = <<~TEXT

      John Smith wrote in #note-1:

      > The quick brown fox

      > jumps over the lazy dog.

      Brick quiz whangs jumpy veldt fox.

      > The five

      > boxing wizards

      > jump quickly.

      The quick onyx goblin jumps over the lazy dwarf.

    TEXT

    expected =

      'John Smith wrote in #note-1:<br>' \

      '&gt; The quick brown fox<br>' \

      '&gt; ...<br>' \

      'Brick quiz whangs jumpy veldt fox.<br>' \

      '&gt; The five<br>' \

      '&gt; ...<br>' \

      'The quick onyx goblin jumps over the lazy dwarf.<br>'

    assert_equal expected, format_activity_description(text)

  end