Re: [RFC PATCH 1/4] t7400-submodule-basic: modernize inspect() helper

Since the inspect() helper in the submodule-basic test suite was
written, 'git -C <dir>' was added. By using -C, we no longer need a
reference to the base directory for the test. This simplifies callsites,
and will make the addition of other arguments in later patches more
readable.

Signed-off-by: Emily Shaffer <redacted>
---
 t/t7400-submodule-basic.sh | 37 +++++++++++++++----------------------
 1 file changed, 15 insertions(+), 22 deletions(-)

diff --git a/t/t7400-submodule-basic.sh b/t/t7400-submodule-basic.sh
index a924fdb7a6..f5dc051a6e 100755
--- a/t/t7400-submodule-basic.sh
+++ b/t/t7400-submodule-basic.sh

@@ -107,25 +107,18 @@ test_expect_success 'setup - repository to add submodules to' '
 # generates, which will expand symbolic links.
 submodurl=$(pwd -P)
 
-listbranches() {
-	git for-each-ref --format='%(refname)' 'refs/heads/*'
-}
-
 inspect() {
 	dir=$1 &&
-	dotdot="${2:-..}" &&
 
-	(
-		cd "$dir" &&
-		listbranches >"$dotdot/heads" &&
-		{ git symbolic-ref HEAD || :; } >"$dotdot/head" &&
-		git rev-parse HEAD >"$dotdot/head-sha1" &&
-		git update-index --refresh &&
-		git diff-files --exit-code &&
-		git clean -n -d -x >"$dotdot/untracked"
-	)
+	git -C "$dir" for-each-ref --format='%(refname)' 'refs/heads/*' >heads &&
+	{ git -C "$dir" symbolic-ref HEAD || :; } >head &&
+	git -C "$dir" rev-parse HEAD >head-sha1 &&
+	git -C "$dir" update-index --refresh &&
+	git -C "$dir" diff-files --exit-code &&
+	git -C "$dir" clean -n -d -x >untracked
 }