Changelog parser for comparing packages in derivatives.
I have a script on the raspbian server which generates debdiffs between
our modified packages and the debian packages they are based on.
The tricky bit is deciding what to compare them to. At the moment the
script assumes that the source package name has not changed and that it
can get the version to compare with by stripping "+rpi<n>" out of the
version number. This works in most cases but in a few cases we have
derived source packages with changed names.
So i'm wondering does anyone know of an easy way to extract the
changelog from a source package, search it for the most recent entry
that does NOT have a given string (in our case +rpi) in the version
number and then return the source package name and version number from
that changelog entry.
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