pickaxe tests: refactor to use test_commit --append --printf
Refactor the existing tests added in e0e7cb8080c (log -G: ignore binary files, 2018-12-14) to use the --append option I added in 3373518cc8b (test-lib functions: add an --append option to test_commit, 2021-01-12) and the --printf option added as part of an in-flight topic of mine this commit depends on. While I'm at it change some of the setup of the test to use a more sensible pattern, e.g. setting up a temporary repo instead of creating an orphan branch. Since the -G and -S options will behave the same way with truncated and removed content also change the "git rm" to emptying data.bin, that's just catering to how test_commit works. The resulting test is shorter. See also f5d79bf7dd6 (tests: refactor a few tests to use "test_commit --append", 2021-01-12) for prior similar refactoring. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>