Regenerating text fields is easy. The templates say

  <input type=text name=foo
                   value='<TMPL_VAR NAME="foo">'>
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and as long as I've given the template a parameter binding for "foo", things work fine. A major plus is that I can view the template in a browser to verify formatting.

Radio buttons are a messier. I want to leave as much clean HTML in the template as possible. But how to regenerate them such that I don't lose the selection? I could do violence to the HTML, and write something like:

  <input type=radio name=bar value="bar1"
         <TMPL_VAR NAME="bar1_checked">>
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where "bar1_checked" will either be "" or "checked". But this screws up the HTML in the template, rendering it unviewable.

The other approach is to do something like

  <TMPL_IF NAME="bar1_checked">
  <input type=radio name=bar value="bar1" checked>
  <TMPL_ELSE>
  <input type=radio name=bar value="bar1">
  </TMPL_IF>
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around each radio box. The template is then viewable as HTML, though each box appears twice, which screws up formatting. To keep tables from getting screwed up, I resorted to writing

  <TMPL_IF NAME="bar1_checked">
  <tr>
  <td><input type=radio name=bar value="bar1" checked></td>
  <td>$47</td>
  </tr>
  <TMPL_ELSE>
  <tr>
  <td><input type=radio name=bar value="bar1"></td>
  <td>$47</td>
  </tr>
  </TMPL_IF>
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but this bloated my templates something aweful, and requires that I invent a new template parameter per radio box. With a dozen radio boxes, the space ads up.

Does anyone know of a clean approach that will let me generate a page with arbitrary radio buttons checked, without having to break or bloat the HTML? Or am I S.O.L.?

P.S. JavaScript is not on option.