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-rw-r--r--lib/asciidoctor/parser.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/asciidoctor/parser.rb b/lib/asciidoctor/parser.rb
index bd1abad1..c8b6f86b 100644
--- a/lib/asciidoctor/parser.rb
+++ b/lib/asciidoctor/parser.rb
@@ -819,7 +819,7 @@ class Parser
unless block
case block_context
when :listing, :source
- if block_context == :source || (!attributes[1] && (language = attributes[2] || doc_attrs['source-language']))
+ if block_context == :source || (language = attributes[1] ? nil : language = attributes[2] || doc_attrs['source-language'])
if language
attributes['style'] = 'source'
attributes['language'] = language