export GIT_CEILING_DIRECTORIES &&
cd non/git &&
test_must_fail git diff --no-index a 2>actual.err &&
- echo "usage: git diff --no-index <path> <path>" >expect.err &&
- test_cmp expect.err actual.err
+ test_i18ngrep "usage: git diff --no-index" actual.err
)
'
test_cmp expect actual
'
+test_expect_success 'diff --no-index allows external diff' '
+ test_expect_code 1 \
+ env GIT_EXTERNAL_DIFF="echo external ;:" \
+ git diff --no-index non/git/a non/git/b >actual &&
+ echo external >expect &&
+ test_cmp expect actual
+'
+
test_done