TODO revision 207753
1271609Savg 2271609SavgXZ Utils To-Do List 3271609Savg=================== 4271609Savg 5271609SavgKnown bugs 6271609Savg---------- 7271609Savg 8271609Savg The test suite is too incomplete. 9271609Savg 10271609Savg If the memory usage limit is less than about 13 MiB, xz is unable to 11271609Savg automatically scale down the compression settings enough even though 12271609Savg it would be possible by switching from BT2/BT3/BT4 match finder to 13271609Savg HC3/HC4. 14271609Savg 15271609Savg The code to detect number of CPU cores doesn't count hyperthreading 16271609Savg as multiple cores. In context of xz, it probably should. 17271609Savg Hyperthreading is good at least with p7zip. 18271609Savg 19271609Savg XZ Utils compress some files significantly worse than LZMA Utils. 20271609Savg This is due to faster compression presets used by XZ Utils, and 21271609Savg can be worked around by using "xz --extreme". However, the presets 22271609Savg need some tweaking and maybe this issue can be minimized without 23271609Savg making the typical case too much slower. 24271609Savg 25271609Savg xz doesn't quote unprintable characters when it displays file names 26271609Savg given on the command line. 27271609Savg 28271609Savg tuklib_exit() doesn't block signals => EINTR is possible. 29271609Savg 30271609Savg 31271609SavgMissing features 32271609Savg---------------- 33271609Savg 34271609Savg xz doesn't support copying extended attributes, access control 35271609Savg lists etc. from source to target file. 36271609Savg 37271609Savg Multithreaded compression 38271609Savg 39271609Savg Multithreaded decompression 40271609Savg 41271609Savg Buffer-to-buffer coding could use less RAM (especially when 42271609Savg decompressing LZMA1 or LZMA2). 43271609Savg 44271609Savg I/O library is not implemented. It will possibly be named libzzf. 45271609Savg 46271609Savg lzma_strerror() to convert lzma_ret to human readable form? 47271609Savg This is tricky, because the same error codes are used with 48271609Savg slightly different meanings. 49271609Savg 50271609Savg 51271609SavgDocumentation 52271609Savg------------- 53271609Savg 54271609Savg Some tutorial is needed for liblzma. I have planned to write some 55271609Savg extremely well commented example programs, which would work as 56271609Savg a tutorial. I suppose the Doxygen tags are quite OK as a quick 57271609Savg reference once one is familiar with the liblzma API. 58271609Savg 59273142Sschweikh Document the LZMA1 and LZMA2 algorithms. 60271609Savg 61271609Savg