92241 - Nested "optgroup" sections do not display correctly

Status: VERIFIED DUPLICATE of bug 79431

(Core :: Layout: Form Controls, defect)

Description

[Jerry]

From Bugzilla Helper:
User-Agent: Mozilla/4.78 [en] (Windows NT 5.0; U)
BuildID:    2001072403

Using nested "optgroup" (HTML 4.0) within a form select statement does not 
display data (select lists - options) correctly.

Reproducible: Always
Steps to Reproduce:
1.Create a select statement using:
<form>
  <select>
    <optgroup label="blah group">
      <option>blah1a</option>
      <option>blah1b</option>
      <optgroup label="level 2">
        <option>blah2a</option>
        <option>blah2b</option>
      </optgroup>
</optgroup>
</select>
</form>
2. click on form select button
3. list is displayed incorrectly

Actual Results:  nested optgroups do not work
Embassy Suites
   Burlingame
   Irvine
Los Angeles
   Covina   
   Downey
Napa Valley
Holiday Inn

Expected Results:  nest optgroups to display as such
Embassy Suites
   Burlingame
   Irvine
   Los Angeles
      Covina   
      Downey
   Napa Valley
Holiday Inn

Comment 1

[Madhur Bhatia]

According to http://www.w3.org/TR/html401/interact/forms.html#h-17.6 -

"In HTML 4, all OPTGROUP elements must be specified directly within a SELECT 
element (i.e., groups may not be nested)."

Comment 2

[Boris Zbarsky [:bzbarsky]]

Duplicate of "Nested OPTGROUP outdents too much"

And yes, the page is invalid per spec.  

*** This bug has been marked as a duplicate of 79431 ***

Comment 3

[Skewer]

v