NAME

       debdiff-apply - apply a debdiff to a Debian source package

SYNOPSIS

       debdiff-apply [options] [orig_dsc_or_dir] [patch_file]
       debdiff-apply [options] < [patch_file]

DESCRIPTION

       debdiff-apply  takes  a patchfile that describes the differences between two Debian source
       packages old and new, and applies it to a target Debian source package orig.

       orig could either be the same as old or it could be different.  patchfile is  expected  to
       be a unified diff between two Debian source trees, as what debdiff(1) normally generates.

       Any  changes  to  debian/changelog  are  dealt with specially, to avoid the conflicts that
       changelog diffs typically produce when applied naively. The exact behaviour may be tweaked
       in the future, so one should not rely on it.

       If patchfile does not apply to orig, even after the special-casing of debian/changelog, no
       changes are made and debdiff-apply(1) will exit with a non-zero error code.

ARGUMENTS

       orig_dsc_or_dir
              Target to apply the patch to. This can either be an unpacked source tree, or a .dsc
              file. In the former case, the directory is modified in-place; in the latter case, a
              second .dsc is created. Default: .

       patch_file
              Patch file to apply, in the format output by debdiff(1).  Default: /dev/stdin

OPTIONS

       -h, --help
              show this help message and exit

       -v, --verbose
              Output more information

       -c CHANGELOG, --changelog CHANGELOG
              Path to debian/changelog; default: debian/changelog

       -D DISTRIBUTION, --distribution DISTRIBUTION
              Distribution to use, if the patch doesn't already  contain  a  changelog;  default:
              experimental

       --repl Run the python REPL after processing.

       --source-version
              Don't  apply  the  patch;  instead  print out the version of the package that it is
              supposed to be applied to, or nothing if  the  patch  does  not  specify  a  source
              version.

       --target-version
              Don't  apply  the  patch; instead print out the new version of the package debdiff-
              apply(1) would generate, when the patch is applied to the the given target package,
              as specified by the other arguments.

   For .dsc patch targets:
       --no-clean
              Don't clean temporary directories after a failure, so you can examine what failed.

       --quilt-refresh
              If  the  building  of  the  new  source package fails, try to refresh patches using
              quilt(1) then try building it again.

       -d DIRECTORY, --directory DIRECTORY
              Extract the .dsc into this directory, which won't  be  cleaned  up  after  debdiff-
              apply(1) exits. If not given, then it will be extracted to a temporary directory.

AUTHORS

       debdiff-apply and this manual page were written by Ximin Luo <infinity0@debian.org>

       Both are released under the GNU General Public License, version 3 or later.

SEE ALSO

       debdiff(1)