Add plugin for automatic hyphenation

_plugins/hyphenate.rb

@@ -0,0 +1,41 @@
+# adapted from
+# - https://raw.githubusercontent.com/aucor/jekyll-plugins/master/hyphenate.rb
+
+require 'nokogiri'
+require 'text/hyphen'
+      
+module Jekyll
+    module HyphenateFilter
+        def hyphenate(content)
+            # Initialize Hyphen 
+            hh = Text::Hyphen.new(:language => @context.registers[:site].config['language'], :left => 2, :right => 2)
+
+            # Parse html with Nokogiri
+            fragment = Nokogiri::HTML::DocumentFragment.parse(content)     
+
+            # Grab the html as it is
+            html = fragment.inner_html
+
+            # Loop through every paragraph
+            fragment.css('p').each do |p|
+                h = p.content
+
+                # Loop through every word
+                p.content.split.each do |w|
+                    # Replace original word with a hyphenated one unless it is the last word in a paragraph
+                    if w != p.content.split.last
+                        h = h.gsub(w, hh.visualize(w, '­'))
+                    end
+                end
+
+                # Replace original paragraph with a hyphenated one
+                html = html.gsub(p, h)
+            end
+
+            # Return hyphenated html
+            html
+        end    
+    end
+end
+
+Liquid::Template.register_filter(Jekyll::HyphenateFilter)