OK, this should be the last of my comments on the ASCII85 filter for now:
General:
* no checks if the memory allocation failed? Is this because
we expect the lib to simply fault and exit?
* Is the memory resizing really essential? Aren't we just
wasting time if it is only off by a small amount?
Encoder:
* ~ line 137: The calculation of line breaks does not take
the END-OF-DATA marker into account
* line 178: (*out)[pos_out] = '\n'; -- pos_out is not
incremented; \n will be overwritten later.
* No memory checking; this is only permissible if we are
absolutely sure that there will be no overflow.
- Cirilo
