This needs a partner application, a userspace tool that queries the installed package list, checks for new translations and offers the user either a list or a direct install.
I struggled with doing this in dash yesterday (bash can almost do it, but dash fails to scope variables sufficiently and has *zero* documentation), so I've written a C&C++ app to do the job.
Why C and C++? Because there's no direct hook into apt-get upgrade and no easy way of reading the apt-cache from C without forking a call to apt-cache itself. So I use libapt-pkg which is a C++ library. The rest of the code is C because I prefer to use the memory management of glib2.
langupdate parses apt-cache to get a list of all possible packages. Then it parses /var/lib/dpkg/status to get a list of installed packages. It generates a package name for the translation file from each installed package and checks to see if this package name exists in the apt-cache. If it's not already installed, it selects that as a choice.
Currently, it's configured to check for -doc packages (because they already exist upstream) but it would check for -locale-$lang.
It's in SVN : http://buildd.emdebian.org/repos/emdebian/trunk/langupdate/trunk and a test package in my repository: http://www.linux.codehelp.co.uk/packages/pool/main/l/langupdate/(but please note, v0.0.1 looks for -doc packages, not -locale-$lang! - now this might be useful but it is only temporary!)
:-) -- Neil Williams ============= http://www.data-freedom.org/ http://www.nosoftwarepatents.com/ http://www.linux.codehelp.co.uk/
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