s;(<input ([^>]+ )?type=(radio|"radio"|'radio')( [^>]+)?)>[ \t]*checked;\1 checked="checked">;g;
s;(<input ([^>]+ )?type=(checkbox|"checkbox"|'checkbox')( [^>]+)?)>[ \t]*checked;\1 checked="checked">;g;
s;(<option( [^>]+)?)>[ \t]*(checked|selected);\1 selected="selected">;g;
s;(<input ([^>]+ )?type=(radio|"radio"|'radio')( [^>]+)?)>[ \t]*checked;\1 checked="checked">;g;
s;(<input ([^>]+ )?type=(checkbox|"checkbox"|'checkbox')( [^>]+)?)>[ \t]*checked;\1 checked="checked">;g;
s;(<option( [^>]+)?)>[ \t]*(checked|selected);\1 selected="selected">;g;