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Some users have different mergetool and difftool settings, so teach difftool to read config vars from the difftool.* namespace. This allows having distinct configurations for the diff and merge scenarios. We don't want to force existing users to set new values for no reason so difftool falls back to existing mergetool config variables when the difftool equivalents are not defined. Signed-off-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
106 lines
3.2 KiB
Plaintext
106 lines
3.2 KiB
Plaintext
git-difftool(1)
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===============
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NAME
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----
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git-difftool - compare changes using common merge tools
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SYNOPSIS
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--------
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'git difftool' [--tool=<tool>] [--no-prompt] ['git diff' options]
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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 merge tools. At its most basic level,
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'git-difftool' does what 'git-mergetool' does but its use is for non-merge
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situations such as when preparing commits or comparing changes against
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the index.
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'git difftool' is a frontend to 'git diff' and accepts the same
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arguments and options.
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See linkgit:git-diff[1] for the full list of supported options.
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OPTIONS
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-------
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-t <tool>::
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--tool=<tool>::
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Use the merge resolution program specified by <tool>.
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Valid merge tools are:
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kdiff3, kompare, tkdiff, meld, xxdiff, emerge,
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vimdiff, gvimdiff, ecmerge, and opendiff
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+
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If a merge resolution program 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 merge tool programs,
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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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--no-prompt::
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Do not prompt before launching a diff tool.
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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 merge tool to use.
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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 merge tool.
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+
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See the `--tool=<tool>` option above for more details.
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merge.keepBackup::
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The original, unedited file content can be saved to a file with
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a `.orig` extension. Defaults to `true` (i.e. keep the backup files).
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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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