This program will use the 3 provided versions of the Debian changelog
to generate a merged changelog file. The resulting changelog is
stored in the file out or output to the standard output if that
parameter is not given.
Each entry is identified by its version number and they are assumed
to be not conflicting, they are simply merged in the right order (by
decreasing version number). When --merge-prereleases is used, the
part of the version number after the last tilde is dropped so that
1.0-1~exp1 and 1.0-1~exp5 are considered to be the same entry. When
the same version is available in both new-a and new-b, a standard
line-based 3-way merge is attempted (provided that the module
Algorithm::Merge is available — it's part of the package
libalgorithm-merge-perl — otherwise you get a global conflict on the
content of the entry).
Drop the part after the last tilde in the version number when
doing version comparison to identify if two entries are
supposed to be the same or not.
This is useful when you keep using the same changelog entry
but you increase its version number regularly. For instance,
you might have 2.3-1~exp1, 2.3-1~exp2, ... until the official
release 2.3-1 and they are all the same changelog entry that
has evolved over time.
--help Show the usage message and exit.
Show the version and exit.
If you want to use this program to merge Debian changelog files in a
git repository, you have first to register a new merge driver in
.git/config or ~/.gitconfig:
name = debian/changelog merge driver
driver = dpkg-mergechangelogs -m %O %A %B %A
Then you have to setup the merge attribute for the debian/changelog
file either in .gitattributes in the repository itself, or in
This page is part of the dpkg (Debian Package Manager) project.
Information about the project can be found at
⟨https://wiki.debian.org/Teams/Dpkg/⟩. If you have a bug report for
this manual page, see
⟨http://bugs.debian.org/cgi-bin/pkgreport.cgi?src=dpkg⟩. This page
was obtained from the project's upstream Git repository
⟨git://git.debian.org/git/dpkg/dpkg.git⟩ on 2017-03-13. If you dis‐
cover any rendering problems in this HTML version of the page, or you
believe there is a better or more up-to-date source for the page, or
you have corrections or improvements to the information in this
COLOPHON (which is not part of the original manual page), send a mail
1.18.15-3-ga2ef 1970-01-01 dpkg-mergechangelogs(1)