Allow NULL to specify no formatting for pop-scope.
Allow NULL to specify no formatting for pop-scope.

idealedge/bigcode,rizard/bigcode,rizard/bigcode,jnealtowns/bigcode,rizard/bigcode,jnealtowns/bigcode,jnealtowns/bigcode,jnealtowns/bigcode,idealedge/bigcode,idealedge/bigcode,idealedge/bigcode,idealedge/bigcode,jnealtowns/bigcode,rizard/bigcode,rizard/bigcode