From 99a64e4b73c38b5cb32dea5d4bd71c70079cae15 Mon Sep 17 00:00:00 2001
From: Junio C Hamano <gitster@pobox.com>
Date: Wed, 22 Mar 2017 22:43:18 -0700
Subject: tests: lint for run-away here-doc

We found a few run-away here documents that are started with an
end-of-here-doc marker that is incorrectly spelled, e.g.

	git some command >actual &&
	cat <<EOF >expect
	...
	EOF &&
	test_cmp expect actual

which ends up slurping the entire remainder of the script as if it
were the data.  Often the command that gets misused like this exits
without failure (e.g. "cat" in the above example), which makes the
command appear to work, without ever executing the remainder of the
test.

Piggy-back on the test that catches &&-chain breakage to detect this
case as well.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/test-lib.sh b/t/test-lib.sh
index 86d77c1..d5f2b70 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -624,9 +624,9 @@ test_run_ () {
 		trace=
 		# 117 is magic because it is unlikely to match the exit
 		# code of other programs
-		test_eval_ "(exit 117) && $1"
-		if test "$?" != 117; then
-			error "bug in the test script: broken &&-chain: $1"
+		if test "OK-117" != "$(test_eval_ "(exit 117) && $1${LF}${LF}echo OK-\$?" 3>&1)"
+		then
+			error "bug in the test script: broken &&-chain or run-away HERE-DOC: $1"
 		fi
 		trace=$trace_tmp
 	fi
-- 
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