When doing, for example, <option tal:attributes="selected ''" />, the resulting element will be <option selected>. The reference implementation in zope.pagetemplate will omit the element in this case, <option>.
When doing, for example, <option tal:attributes= "selected ''" />, the resulting element will be <option selected>. The reference implementation in zope.pagetemplate will omit the element in this case, <option>.