Implication of new configuration variable config_unzip_opts

Latest CVS code introduces another configuration variable config_unzip_opts, that enables user to use command line unzipping programs other than unzip as well.

A command line unzipping program that can silently extract single file from zip archive to console/standard output/pipe, is a mandatory requirement apart from Perl, for using docx2txt.

Some known programs that serve the purpose are listed below. You may explore Internet for more such programs.

Unzipping Program	Relevant Command/Options
unzip (Windows port)	-p
7z	e -so -tzip
pkzipc	-console -silent -translate=none -noarchiveextension
wzunzip	-c
CakeCmd	Current Status Not Known

• unzip and 7z are available on many non-Windows systems by default.
• CakeCmd no longer seems to be available at the site.