Merge branch 'jc/lint-runaway-here-doc'

The test framework learned to detect unterminated here documents.

* jc/lint-runaway-here-doc:
  tests: lint for run-away here-doc

t/test-lib.sh

@@ -625,9 +625,9 @@ 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