lib/kramdown/parser/kramdown/emphasis.rb in kramdown-1.0.2 vs lib/kramdown/parser/kramdown/emphasis.rb in kramdown-1.1.0

@@ -18,11 +18,11 @@
         result = @src.scan(EMPHASIS_START)
         element = (result.length == 2 ? :strong : :em)
         type = result[0..0]
         reset_pos = @src.pos
 
-        if (type == '_' && @src.pre_match =~ /[[:alpha:]]\z/ && @src.check(/[[:alpha:]]/)) || @src.check(/\s/) ||
+        if (type == '_' && @src.pre_match =~ /[[:alnum:]]\z/ && @src.check(/[[:alnum:]]/)) || @src.check(/\s/) ||
             @tree.type == element || @stack.any? {|el, _| el.type == element}
           add_text(result)
           return
         end
 
@@ -30,10 +30,10 @@
           el = Element.new(elem)
           stop_re = /#{Regexp.escape(delim)}/
           found = parse_spans(el, stop_re) do
             (@src.pre_match[-1, 1] !~ /\s/) &&
               (elem != :em || !@src.match?(/#{Regexp.escape(delim*2)}(?!#{Regexp.escape(delim)})/)) &&
-              (type != '_' || !@src.match?(/#{Regexp.escape(delim)}[[:alpha:]]/)) && el.children.size > 0
+              (type != '_' || !@src.match?(/#{Regexp.escape(delim)}[[:alnum:]]/)) && el.children.size > 0
           end
           [found, el, stop_re]
         end
 
         found, el, stop_re = sub_parse.call(result, element)