Tags can take a function for their content.

spec/stdlib/template/builder-spec.coffee

@@ -14,3 +14,9 @@ fdescribe "Builder", ->
       builder.tag 'ol'
       expect(builder.toHtml()).toBe("<ol></ol>")
 
+    it "can generate tags with content", ->
+      builder.tag 'ol', ->
+        builder.tag 'li'
+        builder.tag 'li'
+
+      expect(builder.toHtml()).toBe("<ol><li></li><li></li></ol>")

src/stdlib/template/builder.coffee

@@ -10,10 +10,18 @@ class Builder
   toHtml: ->
     _.map(@document, (x) -> x.toHtml()).join('')
 
-  tag: (name) ->
+  tag: (name, args...) ->
+    options = @extractOptions(args)
     @openTag(name)
+    options.content?()
     @closeTag(name)
 
+  extractOptions: (args) ->
+    options = {}
+    for arg in args
+      options.content = arg if _.isFunction(arg)
+    options
+
   openTag: (name) ->
     @document.push(new OpenTag(name))