the default diff tool will be read from the configured
`diff.guitool` variable instead of `diff.tool`.
+--[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.
++
+'git-difftool' will forward the exit code of the invoked tool when
+'--trust-exit-code' is used.
+
See linkgit:git-diff[1] for the full list of supported options.
CONFIG VARIABLES
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
--------
linkgit:git-diff[1]::