21.02

21.02 alpha 2021-05-06

7-Zip now writes additional field for filename in UTF-8 encoding to zip archives. It allows to extract correct file name from zip archives on different systems.
The command line version of 7-Zip for macOS was released.
The speed for LZMA and LZMA2 decompression in arm64 versions for macOS and Linux was increased by 20%-60%.
Some changes and improvements in ZIP, TAR and NSIS code.

The command line version of 7-Zip for Linux was released.
The improvements for speed of ARM64 version using hardware CPU instructions for AES, CRC-32, SHA-1 and SHA-256.
The bug in versions 18.02 - 21.00 was fixed: 7-Zip could not correctly extract some ZIP archives created with xz compression method.
Some bugs were fixed.

The default number of LZMA2 chunks per solid block in 7z archive was increased to 64. It allows to increase the compression speed for big 7z archives, if there is a big number of CPU cores and threads.
The speed of PPMd compressing/decompressing was increased for 7z/ZIP/RAR archives.
The new -ssp switch. If the switch -ssp is specified, 7-Zip doesn't allow the system to modify "Last Access Time" property of source files for archiving and hashing operations.

7-Zip now writes additional field for filename in UTF-8 encoding to zip archives. It allows to extract correct file name from zip archives on different systems.
The command line version of 7-Zip for macOS was released.
The speed for LZMA and LZMA2 decompression in arm64 versions for macOS and Linux was increased by 20%-60%.
Some changes and improvements in ZIP, TAR and NSIS code.

The command line version of 7-Zip for Linux was released.
The improvements for speed of ARM64 version using hardware CPU instructions for AES, CRC-32, SHA-1 and SHA-256.
The bug in versions 18.02 - 21.00 was fixed: 7-Zip could not correctly extract some ZIP archives created with xz compression method.
Some bugs were fixed.

The default number of LZMA2 chunks per solid block in 7z archive was increased to 64. It allows to increase the compression speed for big 7z archives, if there is a big number of CPU cores and threads.
The speed of PPMd compressing/decompressing was increased for 7z/ZIP/RAR archives.
The new -ssp switch. If the switch -ssp is specified, 7-Zip doesn't allow the system to modify "Last Access Time" property of source files for archiving and hashing operations.