diff options
Diffstat (limited to 'NEWS')
| -rw-r--r-- | NEWS | 83 |
1 files changed, 19 insertions, 64 deletions
@@ -1,73 +1,28 @@ -Changes in version 1.22: +Changes in version 1.23: -The option '-e, --reproduce', which can recover a missing (zeroed) sector in -a lzip file, has been added. For it to work, two things are required: - - The same version of the lzip tool that created the file. - - A reference file containing the uncompressed data corresponding to the - missing compressed data of the zeroed sector, plus some context data - before and after them. -Thanks to Nissanka Gooneratne for his help in testing the reproduce mode. +Decompression time has been reduced by 5-12% depending on the file. -The options '--lzip-level', '--lzip-name', and '--reference-file', auxiliary -to '-e, --reproduce', have been added. +In case of error in a numerical argument to a command line option, lziprecover +now shows the name of the option and the range of valid values. -Option aliases '--dump-tdata', '--remove-tdata', and '--strip-tdata' have -been removed. +Options '--dump' and '--strip' now refuse to write compressed data to a +terminal except when dumping trailing data with '--dump=tdata'. -When decompressing or testing, lziprecover now reports an error if a file -name is empty (lziprecover -t ""). +The option '-U, --unzcrash' now requires an argument: '1' to test 1-bit +errors, or 'B<size>' to test zeroed blocks. -Option '-o, --output' now behaves like '-c, --stdout', but sending the -output unconditionally to a file instead of to standard output. See the new -description of '-o' in the manual. This change is backwards compatible only -when decompressing from standard input alone. Therefore commands like: - lziprecover -d -o foo - bar.lz < foo.lz -must now be split into: - lziprecover -d -o foo - < foo.lz - lziprecover -d bar.lz -or rewritten as: - lziprecover -d - bar.lz < foo.lz > foo +The memory tester now allocates the dictionary once per member instead of +doing it for each test. This makes '-U, --unzcrash' about two times faster +on my machine on files with an uncompressed size larger than about 30 MB. -When using '-c' or '-o', lziprecover now checks whether the output is a -terminal only once. +'-W, --debug-decompress' now continues decompressing the members following +the damaged member if it has been fully decompressed (just failed with a CRC +mismatch). -Lziprecover now does not even open the output file if the input file is a -terminal. +The tool unzcrash now uses execvp instead of popen to avoid invoking /bin/sh +and run faster. It also prints byte or block position in messages. -'--ignore-errors' now makes '--decompress' and '--test' ignore data errors -and continue decompressing the remaining members in the file, keeping input -files unchanged. +Several descriptions have been improved in manual, '--help', and man page. -'--ignore-errors --range-decompress' now decompresses a truncated last -member. It also returns 0 if only ignored errors (format errors or data -errors) are found. - -'--ignore-errors' now considers that any fragment of file starting with a -valid header and large enough to be a member is a (corrupt) member, not a -gap, even if it lacks a valid trailer. - -The words 'decompressed' and 'compressed' have been replaced with the -shorter 'out' and 'in' in the verbose output when decompressing or testing. - -Several compiler warnings have been fixed. (Reported by Nissanka Gooneratne). - -Option '--list' now reports corruption or truncation of the last header in a -multimenber file specifically instead of showing the generic message "Last -member in input file is truncated or corrupt." - -The debug options '-E, --debug-reproduce', '-M, --md5sum', and -'-U, --unzcrash' have been added. - -The commands needed to extract files from a tar.lz archive have been -documented in the manual, in the output of '--help', and in the man page. - -The new chapter 'Reproducing one sector' has been added to the manual. - -The new sections 'Merging with a backup' and 'Reproducing a mailbox' have -been added to the manual. - -The debug options for experts have been documented in the manual. - -Lzip 1.16 (or clzip 1.6) or newer is required to run the tests. - -9 new test files have been added to the testsuite. +The texinfo category of the manual has been changed from 'Data Compression' +to 'Compression' to match that of gzip. (Reported by Alfred M. Szmidt). |