test_expect_success 'warn ambiguity when no candidate matches type hint' '
test_must_fail git rev-parse --verify 000000000^{commit} 2>actual &&
- grep "short SHA1 000000000 is ambiguous" actual
+ test_i18ngrep "short SHA1 000000000 is ambiguous" actual
'
test_expect_success 'disambiguate tree-ish' '