[PATCH 1/2] t4205: drop top-level &&-chaining

[Jeff King <peff@peff.net>]

The test currently does something like:

  do_one() &&
  do_two() &&
  test_expect_success ...

We generally avoid performing actions at the top-level of
the script (outside of a test_expect block) for two reasons:

  1. The test harness is not checking and reporting if they
     fail.

  2. Their output is not handled correctly (not hidden by
     default, nor shown with "-v").

Using &&-chains seems like it should help with (1), but it
doesn't. If either of the commands fails, we simply skip
running the follow-on test entirely, and the test harness
has no idea.

We can fix this by pushing that setup into its own block.
It _could_ go into the following test block, but since the
result in this case is used by multiple tests, it's more
clear to mark it explicitly as a distinct setup step.

Signed-off-by: Jeff King <peff@peff.net>
---
 t/t4205-log-pretty-formats.sh | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/t/t4205-log-pretty-formats.sh b/t/t4205-log-pretty-formats.sh
index d9f6242..d6518fa 100755
--- a/t/t4205-log-pretty-formats.sh
+++ b/t/t4205-log-pretty-formats.sh
@@ -504,8 +504,10 @@ test_expect_success 'ISO and ISO-strict date formats display the same values' '
 '
 
 # get new digests (with no abbreviations)
-head1=$(git rev-parse --verify HEAD~0) &&
-head2=$(git rev-parse --verify HEAD~1) &&
+test_expect_success 'set up log decoration tests' '
+	head1=$(git rev-parse --verify HEAD~0) &&
+	head2=$(git rev-parse --verify HEAD~1)
+'
 
 test_expect_success 'log decoration properly follows tag chain' '
 	git tag -a tag1 -m tag1 &&
-- 
2.9.2.607.g98dce7b