local p = {}
local args = {}
local origArgs = {}
local root
local empty_row_categories = {}
local category_in_empty_row_pattern = '%[%[%s*[Cc][Aa][Tt][Ee][Gg][Oo][Rr][Yy]%s*:[^]]*]]'
local has_rows = false
local function fixChildBoxes(sval, tt)
local function notempty( s ) return s and s:match( '%S' ) end
if notempty(sval) then
local marker = '<span class=special_infobox_marker>'
local s = sval
s = mw.ustring.gsub(s, '(<%s*[Tt][Rr])', marker .. '%1')
s = mw.ustring.gsub(s, '(</[Tt][Rr]%s*>)', '%1' .. marker)
if s:match(marker) then
s = mw.ustring.gsub(s, marker .. '%s*' .. marker, '')
s = mw.ustring.gsub(s, '([\r\n]|-[^\r\n]*[\r\n])%s*' .. marker, '%1')
s = mw.ustring.gsub(s, marker .. '%s*([\r\n]|-)', '%1')
s = mw.ustring.gsub(s, '(</[Cc][Aa][Pp][Tt][Ii][Oo][Nn]%s*>%s*)' .. marker, '%1')
s = mw.ustring.gsub(s, '(<%s*[Tt][Aa][Bb][Ll][Ee][^<>]*>%s*)' .. marker, '%1')