Allow using an IAL for definition terms

IALs are already allowed for normal list items as well as the
definitions of a definition list. Now they can also be used for the
definition terms.

doc/syntax.page

@@ -682,7 +682,8 @@ then the first part of the definition. The line with the definition marker may o
 separated from the preceding paragraph by a blank line. The leading tabs or spaces are stripped away
 from this first line of the definition to allow for a nice alignment with the following definition
 content. Each line of the preceding paragraph is taken to be a term and the lines separately parsed
-as span-level elements.
+as span-level elements. Each such term may optionally start with an [IAL](#inline-attribute-lists)
+that should be applied to the term.
 
 The following is a simple definition list:
 
@@ -737,6 +738,16 @@ paragraph otherwise:
 The rules about having any block-level element as first element in a list item also apply to a
 definition.
 
+As mentioned at the beginning, an optional IAL for applying attributes to a term or a definition can
+be used:
+
+    {:#term} Term with id="term"
+    : {:.cls} Definition with class "cls"
+
+    {:#term1} First term
+    {:#term2} Second term
+    : {:.cls} Definition
+
 
 ## Tables
 

lib/kramdown/converter/kramdown.rb

@@ -31,7 +31,7 @@ def initialize(root, options)
 
       def convert(el, opts = {:indent => 0})
         res = send("convert_#{el.type}", el, opts)
-        if ![:html_element, :li, :dd, :td].include?(el.type) && (ial = ial_for_element(el))
+        if ![:html_element, :li, :dt, :dd, :td].include?(el.type) && (ial = ial_for_element(el))
           res << ial
           res << "\n\n" if Element.category(el) == :block
         elsif [:ul, :dl, :ol, :codeblock].include?(el.type) && opts[:next] &&
@@ -174,7 +174,11 @@ def convert_dd(el, opts)
       end
 
       def convert_dt(el, opts)
-        inner(el, opts) << "\n"
+        result = ''
+        if ial = ial_for_element(el)
+          result << ial << " "
+        end
+        result << inner(el, opts) << "\n"
       end
 
       HTML_TAGS_WITH_BODY=['div', 'script', 'iframe', 'textarea']

lib/kramdown/parser/kramdown/list.rb

@@ -166,6 +166,11 @@ def parse_definition_list
         deflist.options[:location] = para.options[:location] # take location from preceding para which is the first definition term
         para.children.first.value.split(/\n/).each do |term|
           el = Element.new(:dt, nil, nil, :location => @src.current_line_number)
+          term.sub!(self.class::LIST_ITEM_IAL) do
+            parse_attribute_list($1, el.options[:ial] ||= {})
+            ''
+          end
+          el.options[:raw_text] = term
           el.children << Element.new(:raw_text, term)
           deflist.children << el
         end

test/testcases/block/13_definition_list/item_ial.html

@@ -9,4 +9,9 @@
   </dd>
   <dd class="cls">IAL at last
     no code bc of text</dd>
+  <dt class="class">term</dt>
+  <dd>definition</dd>
+  <dt class="class1">term1</dt>
+  <dt class="class2">term2</dt>
+  <dd>definition</dd>
 </dl>

test/testcases/block/13_definition_list/item_ial.text

@@ -6,3 +6,11 @@ item
         code
 : {:.cls} IAL at last
       no code bc of text
+
+
+{:.class} term
+: definition
+
+{:.class1} term1
+{:.class2} term2
+: definition