Define the list_indent option to make it generally usable

Author: gettalong

lib/kramdown/converter/kramdown.rb

@@ -27,7 +27,7 @@ def initialize(root, options)
         @footnotes = []
         @abbrevs = []
         @stack = []
-        @list_indent = options[:list_indent] || 2
+        @list_indent = @options[:list_indent]
         @list_spacing = ' ' * (@list_indent - 2)
       end
 

lib/kramdown/options.rb

@@ -605,6 +605,13 @@ def self.simple_hash_validator(val, name)
       simple_array_validator(val, :forbidden_inline_options)
     end
 
+    define(:list_indent, Integer, 2, <<~EOF)
+      Sets the number of spaces to use for list indentation
+
+      Default: 2
+      Used by: Kramdown converter
+    EOF
+
   end
 
 end