diff --git a/vendor/plugins/maruku/lib/maruku/input/parse_block.rb b/vendor/plugins/maruku/lib/maruku/input/parse_block.rb
index 6907f13c..88ebf573 100644
--- a/vendor/plugins/maruku/lib/maruku/input/parse_block.rb
+++ b/vendor/plugins/maruku/lib/maruku/input/parse_block.rb
@@ -482,12 +482,12 @@ module MaRuKu; module In; module Markdown; module BlockLevelParser
 			return
 		end
 		
-		id = match[1]; url = match[2]; title = match[3]; 
+		id = match[1]; url = match[2]; title = match[3] || match[4] || match[5]; 
 		id = sanitize_ref_id(id)
 		
 		hash = self.refs[id] = {:url=>url,:title=>title}
 		
-		stuff=match[4]
+		stuff=match[6]
 		
 		if stuff
 			stuff.split.each do |couple|
diff --git a/vendor/plugins/maruku/lib/maruku/input/type_detection.rb b/vendor/plugins/maruku/lib/maruku/input/type_detection.rb
index e52563a6..0769cff8 100644
--- a/vendor/plugins/maruku/lib/maruku/input/type_detection.rb
+++ b/vendor/plugins/maruku/lib/maruku/input/type_detection.rb
@@ -120,11 +120,9 @@ module MaRuKu; module Strings
 		  [ ]*
 		<?([^>\s]+)>?				# url = $2
 		  [ ]*
-		(?:# Titles are delimited by "quotes" or (parens).
-			["(']
-			(.+?)			# title = $3
-			[")']			# Matching ) or "
-			\s*(.+)?   # stuff = $4
+		(?: # Titles are delimited by "quotes" or (parens).
+			(?:(?:"([^"]+)")|(?:'([^']+)')|(?:\(([^\(\)]+)\))) # title = $3, $4, or $5
+			\s*(.+)? # stuff = $6
 		)?	# title is optional
 	  }x
 
diff --git a/vendor/plugins/maruku/spec/block_docs/links.md b/vendor/plugins/maruku/spec/block_docs/links.md
index 056d657d..0b6ecd5c 100644
--- a/vendor/plugins/maruku/spec/block_docs/links.md
+++ b/vendor/plugins/maruku/spec/block_docs/links.md
@@ -27,6 +27,8 @@ If all else fails, ask [Google](http://www.google.com)
 
 And now [reference-style link ID with spaces] [Google Images]
 
+And now [reference-style link ID (without spaces)][Google Search]
+
 [google]: http://www.google.com
 
 [google2]: http://www.google.com 'Single quotes'
@@ -36,7 +38,7 @@ And now [reference-style link ID with spaces] [Google Images]
 [google4]: http://www.google.com (Parenthesis)
 
 [Google Search]: 
- http://www.google.com "Google search"
+ http://www.google.com 'Google search'
 
 [Google Images]: 
  http://images.google.com  (Google images)
@@ -73,6 +75,10 @@ md_el(:document,[
 		"And now ",
 		md_link(["reference-style link ID with spaces"],"google_images")
 	]),
+	md_par([
+		"And now ",
+		md_link(["reference-style link ID (without spaces)"], "google_search")
+	]),
 	md_ref_def("google", "http://www.google.com", {:title=>nil}),
 	md_ref_def("google2", "http://www.google.com", {:title=>"Single quotes"}),
 	md_ref_def("google3", "http://www.google.com", {:title=>"Double quotes"}),
@@ -102,6 +108,8 @@ md_el(:document,[
 <p>If all else fails, ask <a href="http://www.google.com">Google</a></p>
 
 <p>And now <a href="http://images.google.com" title="Google images">reference-style link ID with spaces</a></p>
+
+<p>And now <a href="http://www.google.com" title="Google search">reference-style link ID (without spaces)</a></p>
 *** Output of to_latex ***
 Search on \href{http://www.google.com}{Google}
 
@@ -124,6 +132,8 @@ Search on \href{http://www.gogole.com}{http\char58\char47\char47www\char46gogole
 If all else fails, ask \href{http://www.google.com}{Google}
 
 And now \href{http://images.google.com}{reference-style link ID with spaces}
+
+And now \href{http://www.google.com}{reference-style link ID (without spaces)}
 *** Output of to_md ***
 Search on Google
 
@@ -148,5 +158,8 @@ If all else fails, ask Google
 
 And now
 reference-style link ID with spaces
+
+And now
+reference-style link ID (without spaces)
 *** Output of to_s ***
-Search on GoogleSearch on GoogleSearch on GoogleSearch on GoogleSearch on Google imagesInline: Google imagesInline with title: Google imagesInline with title: Google imagesSearch on  or  or ask  or you might ask bill@google.com.If all else fails, ask GoogleAnd now reference-style link ID with spaces
+Search on GoogleSearch on GoogleSearch on GoogleSearch on GoogleSearch on Google imagesInline: Google imagesInline with title: Google imagesInline with title: Google imagesSearch on  or  or ask  or you might ask bill@google.com.If all else fails, ask GoogleAnd now reference-style link ID with spacesAnd now reference-style link ID (without spaces)