KisBufferStream classes should have a deterministic way of settings the "undefined" bits. For instance, when the flow is 6bits. upermask = 0b11111100 lowermask = 0b11 value = (value & upermask) + ( value >> 6 & lowermask); Or something like that.
These files are exceedingly rare, outside test suites, but Dmitry wants to add a warning _if_ the user loads it.
Sorry, we will not in the near future get down to this. WISHGROUP: Out of scope