added latex filter by default

#1

features/bibtex.feature

@@ -39,3 +39,19 @@ Feature: BibTeX
 			"""
 	  When I run jekyll
 	  Then I should see "<h1[^>]*>References</h1>" in "_site/references.html"
+
+  @latex
+	Scenario: Simple Bibliography with LaTeX directives
+		Given I have a configuration file with "citation_style" set to "apa"
+	  And I have a page "references.bib":
+			"""
+			---
+			---
+			@misc{umlaut,
+			  title     = {Look, an umlaut: \"u!},
+			}
+			"""
+	  When I run jekyll
+	  Then the _site directory should exist
+		And the "_site/references.html" file should exist
+	  And I should see "Look, an umlaut: ü!" in "_site/references.html"

features/sorting.feature

@@ -3,7 +3,8 @@ Feature: Sorting BibTeX Bibliographies
   I want to sort my bibliographies according to configurable parameters
 
 	Scenario Outline: Sort Bibliography
-		Given I have a configuration file with "citation_sort_order" set to "<sort-by>"
+		Given I have a configuration file with "citation_sort_by" set to "<sort-by>"
+		And I have a configuration file with "citation_sort_order" set to "<sort-order>"
 	  And I have a page "references.bib":
 			"""
 			---
@@ -25,7 +26,9 @@ Feature: Sorting BibTeX Bibliographies
     Then "<pattern-1>" should come before "<pattern-2>" in "_site/references.html"
 
   Scenarios: Various Sort Orders
-    | sort-by    | pattern-1 | pattern-2 |
-    | none       | 2008      | 2007      |
-    | year       | 2007      | 2008      |
+    | sort_order | sort-by    | pattern-1 | pattern-2 |
+    | ascending  | none       | 2008      | 2007      |
+    | descending | none       | 2008      | 2007      |
+    | ascending  | year       | 2007      | 2008      |
+    | descending | year       | 2008      | 2007      |
       
\ No newline at end of file

lib/jekyll/scholar/converters/bibtex.rb

@@ -11,6 +11,7 @@ module Jekyll
       DEFAULTS = Hash[*%w{
         citation_style  apa
         citation_locale en
+        citation_sort_by none
       }].freeze
       
       PATTERN = (/bib(tex)?$/i).freeze
@@ -27,7 +28,7 @@ module Jekyll
       def output_ext (extension); EXTENSION; end
     
       def convert (content)
-        content = BibTeX.parse(content, :include => [:meta_content]).map do |b|
+        content = BibTeX.parse(content, :include => [:meta_content], :filter => [:latex]).map do |b|
           if b.respond_to?(:to_citeproc)
             CiteProc.process b.to_citeproc, :style => @config['citation_style'],
               :locale => @config['citation_locale'], :format => 'html'