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diff.tool::
Controls which diff tool is used by linkgit:git-difftool[1].
This variable overrides the value configured in `merge.tool`.
The list below shows the valid built-in values.
Any other value is treated as a custom diff tool and requires
that a corresponding difftool.<tool>.cmd variable is defined.
diff.guitool::
Controls which diff tool is used by linkgit:git-difftool[1] when
the -g/--gui flag is specified. This variable overrides the value
configured in `merge.guitool`. The list below shows the valid
built-in values. Any other value is treated as a custom diff tool
and requires that a corresponding difftool.<guitool>.cmd variable
is defined.
include::{build_dir}/mergetools-diff.adoc[]
difftool.<tool>.cmd::
Specify the command to invoke the specified diff tool.
The specified command is evaluated in shell 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.
+
See the `--tool=<tool>` option in linkgit:git-difftool[1] for more details.
difftool.<tool>.path::
Override the path for the given tool. This is useful in case
your tool is not in the PATH.
difftool.trustExitCode::
Exit difftool if the invoked diff tool returns a non-zero exit status.
+
See the `--trust-exit-code` option in linkgit:git-difftool[1] for more details.
difftool.prompt::
Prompt before each invocation of the diff tool.
difftool.guiDefault::
Set `true` to use the `diff.guitool` by default (equivalent to specifying
the `--gui` argument), or `auto` to select `diff.guitool` or `diff.tool`
depending on the presence of a `DISPLAY` environment variable value. The
default is `false`, where the `--gui` argument must be provided
explicitly for the `diff.guitool` to be used.
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