lib/kramdown/parser/kramdown/codeblock.rb in kramdown-1.6.0 vs lib/kramdown/parser/kramdown/codeblock.rb in kramdown-1.7.0

@@ -30,10 +30,10 @@
       end
       define_parser(:codeblock, CODEBLOCK_START)
 
 
       FENCED_CODEBLOCK_START = /^~{3,}/
-      FENCED_CODEBLOCK_MATCH = /^((~){3,})\s*?(\w+)?\s*?\n(.*?)^\1\2*\s*?\n/m
+      FENCED_CODEBLOCK_MATCH = /^((~){3,})\s*?(\w[\w-]*)?\s*?\n(.*?)^\1\2*\s*?\n/m
 
       # Parse the fenced codeblock at the current location.
       def parse_codeblock_fenced
         if @src.check(self.class::FENCED_CODEBLOCK_MATCH)
           start_line_number = @src.current_line_number