Just a quick hack to for <th> tags in your tables. Not vigorously tested. Please suggest any alternate arrangements that might be more inline with the wikiwikiway.

  1. Add the functions indicated below to parse/html.php.
  2. Update the function parse_table, whose source is below, in parse/transforms.php.

Return to TaviPatches.

NB! As a response to this patch and my own ideas, I suggest reading TaviPatches/TableFormatting.

parse/html.php

function html_table_header_start($span = 1){
  if($span == 1)
    { return '<th>'; }
  else
    { return '<th colspan="' . $span . '">'; }
}

function html_table_header_end()
  { return '</th>'; 
}

parse/transforms.php

function parse_table($text)
{
  static $in_table = 0;

  $pre = '';
  $post = '';
  if(preg_match('/^(\|\|)+.*(\|\|)\s*$/', $text))  // Table.
  {
    if(!$in_table)
    {
      $pre = html_table_start();
      $in_table = 1;
    }
	// first look for headers (||~)
	$text = preg_replace('/^((\|\|)*\|\|\~)(.*)\|\|\s*$/e',
                         "new_entity(array('raw',html_table_row_start().html_table_header_start((strlen('\\1')-1)/2))).".
                         "q1('\\3').new_entity(array('raw',html_table_header_end().html_table_row_end()))",
                         $text, -1);

	$text = preg_replace('/^((\|\|)+)(.*)\|\|\s*$/e',
                         "new_entity(array('raw',html_table_row_start().html_table_cell_start(strlen('\\1')/2))).".
                         "q1('\\3').new_entity(array('raw',html_table_cell_end().html_table_row_end()))",
                         $text, -1);
	// first look for headers (||~)
    $text = preg_replace('/((\|\|\~)+)/e',
                         "new_entity(array('raw',html_table_header_end().html_table_header_start(strlen('\\1')/2)))",
                         $text, -1); 
	// regular cells
    $text = preg_replace('/((\|\|)+)/e',
                         "new_entity(array('raw',html_table_cell_end().html_table_cell_start(strlen('\\1')/2)))",
                         $text, -1);
  }
  else if($in_table)                    // Have exited table.
  {
    $in_table = 0;
    $pre = html_table_end();
  }

  if($pre != '')
    { $text = new_entity(array('raw', $pre)) . $text; }
  if($post != '')
    { $text = $text . new_entity(array('raw', $post)); }

  return $text;
}

Usage

Header cells begin with double-pipes and a tilde ('||~')

||~headers cells ||~ begin with a tilde ||  ('||~') ||
||||~ headers can span multiple columns by || starting each cell ||
|| with extra cell |||| separators ||