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git-difftool(1)
===============
NAME
----
git-difftool - compare changes using common merge tools
SYNOPSIS
--------
'git difftool' [--tool=<tool>] [--no-prompt] ['git diff' options]
DESCRIPTION
-----------
'git-difftool' is a git command that allows you to compare and edit files
between revisions using common merge tools. At its most basic level,
'git-difftool' does what 'git-mergetool' does but its use is for non-merge
situations such as when preparing commits or comparing changes against
the index.
'git difftool' is a frontend to 'git diff' and accepts the same
arguments and options.
See linkgit:git-diff[1] for the full list of supported options.
OPTIONS
-------
-t <tool>::
--tool=<tool>::
Use the merge resolution program specified by <tool>.
Valid merge tools are:
kdiff3, kompare, tkdiff, meld, xxdiff, emerge,
vimdiff, gvimdiff, ecmerge, and opendiff
+
If a merge resolution program is not specified, 'git-difftool'
will use the configuration variable `merge.tool`. If the
configuration variable `merge.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 `mergetool.<tool>.path`. For example, you
can configure the absolute path to kdiff3 by setting
`mergetool.kdiff3.path`. Otherwise, 'git-difftool' assumes the
tool is available in PATH.
+
Instead of running one of the known merge tool programs,
'git-difftool' can be customized to run an alternative program
by specifying the command line to invoke in a configuration
variable `mergetool.<tool>.cmd`.
+
When 'git-difftool' is invoked with this tool (either through the
`-t` or `--tool` option or the `merge.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. `$BASE` is provided for compatibility
with custom merge tool commands and has the same value as `$LOCAL`.
--no-prompt::
Do not prompt before launching a diff tool.
CONFIG VARIABLES
----------------
merge.tool::
The default merge tool to use.
+
See the `--tool=<tool>` option above for more details.
merge.keepBackup::
The original, unedited file content can be saved to a file with
a `.orig` extension. Defaults to `true` (i.e. keep the backup files).
mergetool.<tool>.path::
Override the path for the given tool. This is useful in case
your tool is not in the PATH.
mergetool.<tool>.cmd::
Specify the command to invoke the specified merge tool.
+
See the `--tool=<tool>` option above for more details.
SEE ALSO
--------
linkgit:git-diff[1]::
Show changes between commits, commit and working tree, etc
linkgit:git-mergetool[1]::
Run merge conflict resolution tools to resolve merge conflicts
linkgit:git-config[1]::
Get and set repository or global options
AUTHOR
------
Written by David Aguilar <davvid@gmail.com>.
Documentation
--------------
Documentation by David Aguilar and the git-list <git@vger.kernel.org>.
GIT
---
Part of the linkgit:git[1] suite
|
