Fixing formatting for above: if exp ~ ('mask_shl', int:size, int:offset, -offset, :e): ... vs if type(exp) == tuple and len(exp) == 5 and exp[0]=='ma

Fixing formatting for above: if exp ~ ('mask_shl', int:size, int:offset, -offset, :e): ... vs if type(exp) == tuple and len(exp) == 5 and exp[0]=='mask_shl' and type(exp[1])==int aand type(exp[2])==int and exp[3] == -exp[1]: size, offset, e = exp[1], exp[2], exp[4] ...