need to produce *and* conditions in selecting publications

lib/jekyll/scholar/extras.rb

 require 'jekyll/scholar'
 require 'jekyll/scholar/extras/extra_utils'
 require 'jekyll/scholar/extras/bibliography_hdp'
+require 'jekyll/scholar/extras/bibliography_bytype'
 require 'jekyll/scholar/extras/details_hdp'

lib/jekyll/scholar/extras/bibliography_bytype.rb

+module Jekyll
+  class Scholar
+
+    class BibliographyHDPByTypeTag < Liquid::Tag
+      include Scholar::Utilities
+      include ScholarExtras::Utilities
+  
+      def initialize(tag_name, arguments, tokens)
+        super
+
+        @config = Scholar.defaults.dup
+        @bibtex_file = arguments.strip
+      end
+
+      def render(context)
+        set_context_to context
+
+         year_section = ''
+         opts = ['@article','@*[public!=no]']
+#references = public_journal_entries.map do |entry|
+        references = get_entries(opts).map do |entry|
+          reference = ''
+          ref = ''
+
+          ref = CiteProc.process entry.to_citeproc, :style => config['style'],
+            :locale => config['locale'], :format => 'html'
+          content_tag :span, ref, :id => entry.key
+
+          if entry.field?(:year)
+            if (year_section != entry[:year])
+              reference << "<h1>"
+              reference << entry[:year].to_s
+              reference << "</h1>"
+              year_section = entry[:year]
+            end
+          end 
+
+          reference << ref
+          if generate_details?
+           reference << "<br />"
+           reference << link_to(details_link_for(entry), config['details_link'])
+           reference << "."
+          end
+
+          if entry.field?(:pdflink1) or entry.field?(:pptlink1)
+            reference << "<b> Downloads: </b>" 
+          end 
+
+          if entry.field?(:pdflink1)
+            reference << "<a href=\"" + entry[:pdflink1].to_s + "\">PDF</a>"
+
+          end
+          
+          if entry.field?(:pptlink1)
+            reference << "<a href=\"" + entry[:pptlink1].to_s + "\">PPT</a>"
+
+          end
+
+          content_tag :br, reference
+        end
+
+        references.join("\n")
+#content_tag :ul, references.join("\n")
+#content_tag :li, reference
+      end
+      
+    end
+    
+  end
+end
+
+Liquid::Template.register_tag('bibliography_bytype', Jekyll::Scholar::BibliographyHDPByTypeTag)

lib/jekyll/scholar/extras/extra_utils.rb

@@ -16,10 +16,41 @@ module Jekyll
     def bibliography
       @bibliography ||= BibTeX.open(bibtex_path, bibtex_options)
     end          
+
+    def get_entries(and_list)
+      b = bibliography['@*']
+      and_list.each { |t|
+        b = bibliography[t] & b
+      }
+      puts b.length
+
+      unless config['sort_by'] == 'none'
+        b.sort_by! { |e| e[config['sort_by']].to_s }
+        b.reverse! if config['order'] =~ /^(desc|reverse)/i
+      end
+       
+        b
+     end
+    
+   def public_journal_entries
+      bart = bibliography['@article']
+      bpub = bibliography['@*[public!=no]']
+      b = bart & bpub 
+      puts b.class
+      puts bart.length 
+      puts bpub.length
+      puts b.length
+
+      unless config['sort_by'] == 'none'
+        b.sort_by! { |e| e[config['sort_by']].to_s }
+        b.reverse! if config['order'] =~ /^(desc|reverse)/i
+      end
+       
+        b
+     end
      
     def public_entries
       b = bibliography['@*[public!=no]']
-#      b = bibliography[config['query']]
 
       unless config['sort_by'] == 'none'
         b.sort_by! { |e| e[config['sort_by']].to_s }

samples/jekyll-template/_publications/custom-hdp.csl

@@ -98,7 +98,7 @@
         <number variable="number-of-volumes" form="numeric"/>
         <text term="volume" form="short" suffix="." plural="true" strip-periods="true"/>
       </group>
-      <group delimiter=" ">
+      <group delimiter=", ">
         <text term="issue" form="short" suffix="." strip-periods="true"/>
         <number variable="issue" form="numeric"/>
       </group>
@@ -240,7 +240,7 @@
             <text variable="genre"/>
             <text macro="publisher"/>
             <text macro="event" prefix="&lt;i&gt;" suffix="&lt;/i&gt;,"/>
-            <text macro="locators" prefix="Technical Report #" suffix=", "/>
+            <text variable="issue" prefix="Technical Report #" suffix=", " form="numeric"/>
             <text macro="issued"/>
           </group>
         </else-if>

samples/jekyll-template/_publications/test.bib

+@book{dragon,
+			Address = {Boston},
+			Author = {Aho, Alfred V., and Lam, Monica S., and Ullman, Jeffrey D.},
+			Booktitle = {Compilers: Principles, Techniques, and Tools},
+			Date-Added = {2010-08-05 09:57:15 +0200},
+			Date-Modified = {2010-08-05 10:06:32 +0200},
+			Edition = {second},
+			Keywords = {compiler, lex, yacc},
+			Publisher = {Addison Wesley},
+			Title = {Compilers: Principles, Techniques, and Tools},
+			Year = {2007},
+      public ={yes}
+}
+		
 @book{python,
   author={M. Lutz},
   year={2001},
@@ -43,6 +57,6 @@
     pages = {674-681},
     title = {commentary on action in perception},
     volume = {76},
-    public    = {no},
+    public    = {yes},
     year = {2008}}