Merge branch 'rr/test-chaining'

* rr/test-chaining:
t3401: use test_commit in setup
t3401: modernize style
t3040 (subprojects-basic): fix '&&' chaining, modernize style
t1510 (worktree): fix '&&' chaining
t3030 (merge-recursive): use test_expect_code
test: fix '&&' chaining
t3200 (branch): fix '&&' chaining

diff --cc t/t3200-branch.sh
Simple merge