add missing scenario when parsing revision info line

2 files changed, 16 insertions, 1 deletions

diff --git a/lib/asciidoctor.rb b/lib/asciidoctor.rb
index 77c305b6..f6812b3e 100644
--- a/lib/asciidoctor.rb
+++ b/lib/asciidoctor.rb
@@ -434,7 +434,7 @@ module Asciidoctor
     #   v1.0, 2013-01-01: Ring in the new year release
     #   1.0, Jan 01, 2013
     #
-    RevisionInfoLineRx = /^(?:\D*(.*?),)? *(?!:)(.*?)(?: *(?!^): *(.*))?$/
+    RevisionInfoLineRx = /^(?:\D*(.*?),)? *(?!:)(.*?)(?: *(?!^),?: *(.*))?$/
 
     # Matches the title and volnum in the manpage doctype.
     #
diff --git a/test/document_test.rb b/test/document_test.rb
index eaebf2be..07a9d0df 100644
--- a/test/document_test.rb
+++ b/test/document_test.rb
@@ -1434,6 +1434,21 @@ more info...
       assert_xpath '//*[@id="header"]/*[@class="details"]/span[@id="revremark"][text() = "See changelog."]', output, 1
     end
 
+    test 'should parse revision line if date is empty' do
+      input = <<-EOS
+= Document Title
+Author Name
+v1.0.0,:remark
+
+content
+      EOS
+
+      doc = document_from_string input
+      assert_equal '1.0.0', doc.attributes['revnumber']
+      assert_nil doc.attributes['revdate']
+      assert_equal 'remark', doc.attributes['revremark']
+    end
+
     test 'should include revision history if revdate and revnumber is set' do
       input = <<-EOS
 = Document Title