GIT-DIFFTOOL(1)           (08/17/2021)            GIT-DIFFTOOL(1)

     NAME
          git-difftool - Show changes using common diff tools

     SYNOPSIS
          git difftool [<options>] [<commit> [<commit>]] [--] [<path>...]

     DESCRIPTION
          git difftool is a Git command that allows you to compare and
          edit files between revisions using common diff tools. git
          difftool is a frontend to git diff and accepts the same
          options and arguments. See git-diff(1).

     OPTIONS
          -d, --dir-diff
              Copy the modified files to a temporary location and
              perform a directory diff on them. This mode never
              prompts before launching the diff tool.

          -y, --no-prompt
              Do not prompt before launching a diff tool.

          --prompt
              Prompt before each invocation of the diff tool. This is
              the default behaviour; the option is provided to
              override any configuration settings.

          --rotate-to=<file>
              Start showing the diff for the given path, the paths
              before it will move to end and output.

          --skip-to=<file>
              Start showing the diff for the given path, skipping all
              the paths before it.

          -t <tool>, --tool=<tool>
              Use the diff tool specified by <tool>. Valid values
              include emerge, kompare, meld, and vimdiff. Run git
              difftool --tool-help for the list of valid <tool>
              settings.

              If a diff tool is not specified, git difftool will use
              the configuration variable diff.tool. If the
              configuration variable diff.tool is not set, git
              difftool will pick a suitable default.

              You can explicitly provide a full path to the tool by
              setting the configuration variable difftool.<tool>.path.
              For example, you can configure the absolute path to
              kdiff3 by setting difftool.kdiff3.path. Otherwise, git

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              difftool assumes the tool is available in PATH.

              Instead of running one of the known diff tools, git
              difftool can be customized to run an alternative program
              by specifying the command line to invoke in a
              configuration variable difftool.<tool>.cmd.

              When git difftool is invoked with this tool (either
              through the -t or --tool option or the diff.tool
              configuration variable) the configured command line will
              be invoked with the following variables available:
              $LOCAL is set to the name of the temporary file
              containing the contents of the diff pre-image and
              $REMOTE is set to the name of the temporary file
              containing the contents of the diff post-image.  $MERGED
              is the name of the file which is being compared.  $BASE
              is provided for compatibility with custom merge tool
              commands and has the same value as $MERGED.

          --tool-help
              Print a list of diff tools that may be used with --tool.

          --[no-]symlinks
              git difftool's default behavior is create symlinks to
              the working tree when run in --dir-diff mode and the
              right-hand side of the comparison yields the same
              content as the file in the working tree.

              Specifying --no-symlinks instructs git difftool to
              create copies instead.  --no-symlinks is the default on
              Windows.

          -x <command>, --extcmd=<command>
              Specify a custom command for viewing diffs.
              git-difftool ignores the configured defaults and runs
              $command $LOCAL $REMOTE when this option is specified.
              Additionally, $BASE is set in the environment.

          -g, --[no-]gui
              When git-difftool is invoked with the -g or --gui option
              the default diff tool will be read from the configured
              diff.guitool variable instead of diff.tool. The --no-gui
              option can be used to override this setting. If
              diff.guitool is not set, we will fallback in the order
              of merge.guitool, diff.tool, merge.tool until a tool is
              found.

          --[no-]trust-exit-code
              git-difftool invokes a diff tool individually on each
              file. Errors reported by the diff tool are ignored by
              default. Use --trust-exit-code to make git-difftool exit
              when an invoked diff tool returns a non-zero exit code.

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              git-difftool will forward the exit code of the invoked
              tool when --trust-exit-code is used.

          See git-diff(1) for the full list of supported options.

     CONFIG VARIABLES
          git difftool falls back to git mergetool config variables
          when the difftool equivalents have not been defined.

          diff.tool
              The default diff tool to use.

          diff.guitool
              The default diff tool to use when --gui is specified.

          difftool.<tool>.path
              Override the path for the given tool. This is useful in
              case your tool is not in the PATH.

          difftool.<tool>.cmd
              Specify the command to invoke the specified diff tool.

              See the --tool=<tool> option above for more details.

          difftool.prompt
              Prompt before each invocation of the diff tool.

          difftool.trustExitCode
              Exit difftool if the invoked diff tool returns a
              non-zero exit status.

              See the --trust-exit-code option above for more details.

     SEE ALSO
          git-diff(1)
              Show changes between commits, commit and working tree,
              etc

          git-mergetool(1)
              Run merge conflict resolution tools to resolve merge
              conflicts

          git-config(1)
              Get and set repository or global options

     GIT
          Part of the git(1) suite

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