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49bd56a5f7
It is an oversimplification to say that we can take "[<commit> [<commit>]]", as it really depends on what options have been given. Instead, let's list the major modes of operation separately, as we do in other manpages. This patch also adjusts the text immediately after the synopsis to match the lines given in the synopsis. For git-difftool, which has the same issue, let's refer the user to the git-diff manpage rather than spelling it all out again. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
121 lines
3.5 KiB
Text
121 lines
3.5 KiB
Text
git-difftool(1)
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===============
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NAME
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----
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git-difftool - Show changes using common diff tools
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SYNOPSIS
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--------
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'git difftool' [<options>] [<commit> [<commit>]] [--] [<path>...]
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DESCRIPTION
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-----------
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'git difftool' is a git command that allows you to compare and edit files
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between revisions using common diff tools. 'git difftool' is a frontend
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to 'git diff' and accepts the same options and arguments. See
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linkgit:git-diff[1].
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OPTIONS
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-------
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-y::
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--no-prompt::
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Do not prompt before launching a diff tool.
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--prompt::
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Prompt before each invocation of the diff tool.
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This is the default behaviour; the option is provided to
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override any configuration settings.
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-t <tool>::
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--tool=<tool>::
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Use the diff tool specified by <tool>.
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Valid merge tools are:
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kdiff3, kompare, tkdiff, meld, xxdiff, emerge, vimdiff, gvimdiff,
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ecmerge, diffuse, opendiff, p4merge and araxis.
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+
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If a diff tool is not specified, 'git difftool'
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will use the configuration variable `diff.tool`. If the
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configuration variable `diff.tool` is not set, 'git difftool'
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will pick a suitable default.
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+
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You can explicitly provide a full path to the tool by setting the
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configuration variable `difftool.<tool>.path`. For example, you
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can configure the absolute path to kdiff3 by setting
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`difftool.kdiff3.path`. Otherwise, 'git difftool' assumes the
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tool is available in PATH.
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+
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Instead of running one of the known diff tools,
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'git difftool' can be customized to run an alternative program
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by specifying the command line to invoke in a configuration
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variable `difftool.<tool>.cmd`.
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+
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When 'git difftool' is invoked with this tool (either through the
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`-t` or `--tool` option or the `diff.tool` configuration variable)
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the configured command line will be invoked with the following
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variables available: `$LOCAL` is set to the name of the temporary
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file containing the contents of the diff pre-image and `$REMOTE`
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is set to the name of the temporary file containing the contents
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of the diff post-image. `$BASE` is provided for compatibility
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with custom merge tool commands and has the same value as `$LOCAL`.
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-x <command>::
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--extcmd=<command>::
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Specify a custom command for viewing diffs.
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'git-difftool' ignores the configured defaults and runs
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`$command $LOCAL $REMOTE` when this option is specified.
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-g::
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--gui::
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When 'git-difftool' is invoked with the `-g` or `--gui` option
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the default diff tool will be read from the configured
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`diff.guitool` variable instead of `diff.tool`.
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See linkgit:git-diff[1] for the full list of supported options.
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CONFIG VARIABLES
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----------------
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'git difftool' falls back to 'git mergetool' config variables when the
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difftool equivalents have not been defined.
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diff.tool::
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The default diff tool to use.
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diff.guitool::
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The default diff tool to use when `--gui` is specified.
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difftool.<tool>.path::
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Override the path for the given tool. This is useful in case
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your tool is not in the PATH.
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difftool.<tool>.cmd::
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Specify the command to invoke the specified diff tool.
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+
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See the `--tool=<tool>` option above for more details.
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difftool.prompt::
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Prompt before each invocation of the diff tool.
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SEE ALSO
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--------
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linkgit:git-diff[1]::
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Show changes between commits, commit and working tree, etc
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linkgit:git-mergetool[1]::
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Run merge conflict resolution tools to resolve merge conflicts
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linkgit:git-config[1]::
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Get and set repository or global options
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AUTHOR
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------
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Written by David Aguilar <davvid@gmail.com>.
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Documentation
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--------------
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Documentation by David Aguilar and the git-list <git@vger.kernel.org>.
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GIT
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---
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Part of the linkgit:git[1] suite
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