Index: includes/form.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/form.inc,v
retrieving revision 1.36
diff -r1.36 form.inc
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<   if (function_exists('theme_' . $form_id)) {
---
>   if (theme_get_function($form_id)) {
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<   elseif (function_exists('theme_' . $callback)) {
---
>   elseif (theme_get_function($callback)) {
Index: includes/theme.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/theme.inc,v
retrieving revision 1.267
diff -r1.267 theme.inc
2c2
< // $Id: theme.inc,v 1.267 2005/12/10 19:26:47 dries Exp $
---
> // $Id: theme.inc,v 1.267 2005-12-10 19:26:47 dries Exp $
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>   $args = func_get_args();
>   $function = array_shift($args);
> 
>   if ($func = theme_get_function($function)) {
>     return call_user_func_array($func, $args);
>   }
> }
> 
> /**
>  * Determine if a theme function exists, and if so return which one was found.
>  *
>  * @param $function
>  *   The name of the theme function to test.
>  * @return
>  *   An HTML string represents the function found.
>  */
> function theme_get_function($function) {
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<   $args = func_get_args();
<   $function = array_shift($args);
< 
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<     return call_user_func_array($theme .'_'. $function, $args);
---
>     return $theme .'_'. $function;
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<     return call_user_func_array($theme_engine .'_'. $function, $args);
---
>     return $theme_engine .'_'. $function;
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<     return call_user_func_array('theme_'. $function, $args);
---
>     return 'theme_'. $function;
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>   return false;