pub fn push_column_class(out: &mut String, column: &Column<'_>, opts: &Emit)Expand description
The class a cell of this column carries, written into a buffer the caller already has.
column_class’s streaming form. It is the one that runs per cell per row,
and it used to allocate twice to get there: once for col-<name> and once
for the prefix in front of it.