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

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

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

DESCRIPTION
     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  (pro-
     vided  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).

OPTIONS
     -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.

     --help
	    Show the usage message and exit.

     --version
	    Show the version and exit.

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

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

LIMITATIONS
     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.

INTEGRATION WITH GIT
     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/attrib-
     utes:

      debian/changelog merge=dpkg-mergechangelogs

1.19.8				   2022-05-24		 dpkg-mergechangelogs(1)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=dpkg-mergechangelogs&sektion=1&manpath=FreeBSD+Ports+15.1.quarterly>

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