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require 'sanitize'
module Jekyll
module TruncateFilter
def truncate(html, num_characters = 1000, indicator = ' [...]')
'<p>' << Sanitize.clean(html).slice(Regexp.new(".{1,#{num_characters}}( |$)")).chomp(' ') << indicator << '</p>'
end
end
end
Liquid::Template.register_filter(Jekyll::TruncateFilter)
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