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-rwxr-xr-xt/t7800-difftool.sh9
1 files changed, 9 insertions, 0 deletions
diff --git a/t/t7800-difftool.sh b/t/t7800-difftool.sh
index 19c72f55bf..1de83ef98f 100755
--- a/t/t7800-difftool.sh
+++ b/t/t7800-difftool.sh
@@ -92,6 +92,15 @@ test_expect_success 'difftool honors --gui' '
restore_test_defaults
'
+test_expect_success 'difftool --gui works without configured diff.guitool' '
+ git config diff.tool test-tool &&
+
+ diff=$(git difftool --no-prompt --gui branch) &&
+ test "$diff" = "branch" &&
+
+ restore_test_defaults
+'
+
# Specify the diff tool using $GIT_DIFF_TOOL
test_expect_success 'GIT_DIFF_TOOL variable' '
git config --unset diff.tool