dpkg-mergechangelogs(1) — Linux manual page


dpkg-mergechangelogs(1)        dpkg suite        dpkg-mergechangelogs(1)

NAME         top

       dpkg-mergechangelogs - 3-way merge of debian/changelog files

SYNOPSIS         top

       dpkg-mergechangelogs [option...] old new-a new-b [out]

DESCRIPTION         top

       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).

       This program was introduced in dpkg 1.15.7.

OPTIONS         top

           Ignore the version number when the entries are marked as
           UNRELEASED (since dpkg 1.21.0).

           This is useful when you have diverging development for
           versions that have not yet been released. For instance 2.1-1
           is released, then development happens for the new 2.2-1 and
           then for 2.3-1, where it makes sense to just end with a
           coalesced entry for 2.3-1 including all the development done
           in 2.2-1.

       -m, --merge-prereleases
           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.

           Show the usage message and exit.

           Show the version and exit.

ENVIRONMENT         top

           Sets the color mode (since dpkg 1.18.5).  The currently
           accepted values are: auto (default), always and never.

           If set, it will be used to decide whether to activate Native
           Language Support, also known as internationalization (or
           i18n) support (since dpkg 1.19.0).  The accepted values are:
           0 and 1 (default).

LIMITATIONS         top

       Anything that is not parsed by Dpkg::Changelog is lost during the
       merge.  This might include stuff like comments which were not
       supposed to be there, etc.


       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:

        [merge "dpkg-mergechangelogs"]
           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 .git/info/attributes:

        debian/changelog merge=dpkg-mergechangelogs

COLOPHON         top

       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
       clone https://git.dpkg.org/git/dpkg/dpkg.git⟩ on 2023-12-22.  (At
       that time, the date of the most recent commit that was found in
       the repository was 2023-12-18.)  If you discover 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 to

1.22.0-52-g1af0                2023-08-30        dpkg-mergechangelogs(1)