tests: fix broken &&-chains in `$(...)` command substitutions

The top-level &&-chain checker built into t/test-lib.sh causes tests to
magically exit with code 117 if the &&-chain is broken. However, it has
the shortcoming that the magic does not work within `{...}` groups,
`(...)` subshells, `$(...)` substitutions, or within bodies of compound
statements, such as `if`, `for`, `while`, `case`, etc. `chainlint.sed`
partly fills in the gap by catching broken &&-chains in `(...)`
subshells, but bugs can still lurk behind broken &&-chains in the other
cases.

Fix broken &&-chains in `$(...)` command substitutions in order to
reduce the number of possible lurking bugs.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

contrib/subtree/t/t7900-subtree.sh

@@ -1445,7 +1445,7 @@ test_expect_success 'subtree descendant check' '
 	) &&
 	test_create_commit "$test_count" folder_subtree/0 &&
 	test_create_commit "$test_count" folder_subtree/b &&
-	cherry=$(cd "$test_count"; git rev-parse HEAD) &&
+	cherry=$(cd "$test_count" && git rev-parse HEAD) &&
 	(
 		cd "$test_count" &&
 		git checkout branch

t/t0005-signals.sh

@@ -48,7 +48,7 @@ test_expect_success !MINGW 'a constipated git dies with SIGPIPE' '
 '
 
 test_expect_success !MINGW 'a constipated git dies with SIGPIPE even if parent ignores it' '
-	OUT=$( ((trap "" PIPE; large_git; echo $? 1>&3) | :) 3>&1 ) &&
+	OUT=$( ((trap "" PIPE && large_git; echo $? 1>&3) | :) 3>&1 ) &&
 	test_match_signal 13 "$OUT"
 '
 

t/t0060-path-utils.sh

@@ -216,7 +216,7 @@ test_expect_success SYMLINKS 'real path works on symlinks' '
 	mkdir second &&
 	ln -s ../first second/other &&
 	mkdir third &&
-	dir="$(cd .git; pwd -P)" &&
+	dir="$(cd .git && pwd -P)" &&
 	dir2=third/../second/other/.git &&
 	test "$dir" = "$(test-tool path-utils real_path $dir2)" &&
 	file="$dir"/index &&
@@ -224,7 +224,7 @@ test_expect_success SYMLINKS 'real path works on symlinks' '
 	basename=blub &&
 	test "$dir/$basename" = "$(cd .git && test-tool path-utils real_path "$basename")" &&
 	ln -s ../first/file .git/syml &&
-	sym="$(cd first; pwd -P)"/file &&
+	sym="$(cd first && pwd -P)"/file &&
 	test "$sym" = "$(test-tool path-utils real_path "$dir2/syml")"
 '
 

t/t1006-cat-file.sh

@@ -211,14 +211,14 @@ done
 test_expect_success "--batch-check for a non-existent named object" '
     test "foobar42 missing
 foobar84 missing" = \
-    "$( ( echo foobar42; echo_without_newline foobar84; ) | git cat-file --batch-check)"
+    "$( ( echo foobar42 && echo_without_newline foobar84 ) | git cat-file --batch-check)"
 '
 
 test_expect_success "--batch-check for a non-existent hash" '
     test "0000000000000000000000000000000000000042 missing
 0000000000000000000000000000000000000084 missing" = \
-    "$( ( echo 0000000000000000000000000000000000000042;
-	 echo_without_newline 0000000000000000000000000000000000000084; ) |
+    "$( ( echo 0000000000000000000000000000000000000042 &&
+	 echo_without_newline 0000000000000000000000000000000000000084 ) |
        git cat-file --batch-check)"
 '
 
@@ -226,8 +226,8 @@ test_expect_success "--batch for an existent and a non-existent hash" '
     test "$tag_sha1 tag $tag_size
 $tag_content
 0000000000000000000000000000000000000000 missing" = \
-    "$( ( echo $tag_sha1;
-	 echo_without_newline 0000000000000000000000000000000000000000; ) |
+    "$( ( echo $tag_sha1 &&
+	 echo_without_newline 0000000000000000000000000000000000000000 ) |
        git cat-file --batch)"
 '
 

t/t3600-rm.sh

@@ -265,7 +265,7 @@ test_expect_success 'choking "git rm" should not let it die with cruft (induce S
 
 test_expect_success !MINGW 'choking "git rm" should not let it die with cruft (induce and check SIGPIPE)' '
 	choke_git_rm_setup &&
-	OUT=$( ((trap "" PIPE; git rm -n "some-file-*"; echo $? 1>&3) | :) 3>&1 ) &&
+	OUT=$( ((trap "" PIPE && git rm -n "some-file-*"; echo $? 1>&3) | :) 3>&1 ) &&
 	test_match_signal 13 "$OUT" &&
 	test_path_is_missing .git/index.lock
 '

t/t7010-setup.sh

@@ -137,7 +137,7 @@ test_expect_success 'setup deeper work tree' '
 
 test_expect_success 'add a directory outside the work tree' '(
 	cd tester &&
-	d1="$(cd .. ; pwd)" &&
+	d1="$(cd .. && pwd)" &&
 	test_must_fail git add "$d1"
 )'