[PATCH v3 3/5] tests: use shorter here-docs in chainlint.sed for AIX sed

Improve the portability of chainlint by using shorter here-docs. On
AIX sed will complain about:

    sed: 0602-417 The label :hereslurp is greater than eight
    characters

As noted in [1] there's still a remaining recently introduced
portability issue also introduced in 878f988350 ("t/test-lib: teach
--chain-lint to detect broken &&-chains in subshells", 2018-07-11), so
under AIX the tests must be run with GIT_TEST_CHAIN_LINT=0.

I don't know how to solve the other issue, and this gets us some of
the way to GIT_TEST_CHAIN_LINT=1 working again on AIX.

1. https://public-inbox.org/git/871sapezba.fsf@evledraar.gmail.com/

Signed-off-by: Ævar Arnfjörð Bjarmason <redacted>
---
 t/chainlint.sed | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/t/chainlint.sed b/t/chainlint.sed
index 8544df38df..2333705b27 100644
--- a/t/chainlint.sed
+++ b/t/chainlint.sed

@@ -97,11 +97,11 @@
 /<<[ 	]*[-\\']*[A-Za-z0-9_]/ {
 	s/^\(.*\)<<[ 	]*[-\\']*\([A-Za-z0-9_][A-Za-z0-9_]*\)'*/<\2>\1<</
 	s/[ 	]*<<//
-	:hereslurp
+	:hered
 	N
 	/^<\([^>]*\)>.*\n[ 	]*\1[ 	]*$/!{
 		s/\n.*$//
-		bhereslurp
+		bhered
 	}
 	s/^<[^>]*>//
 	s/\n.*$//

@@ -283,11 +283,11 @@ bfolded
 :heredoc
 s/^\(.*\)<<[ 	]*[-\\']*\([A-Za-z0-9_][A-Za-z0-9_]*\)'*/<\2>\1<</
 s/[ 	]*<<//
-:hereslurpsub
+:heredsub
 N
 /^<\([^>]*\)>.*\n[ 	]*\1[ 	]*$/!{
 	s/\n.*$//
-	bhereslurpsub
+	bheredsub
 }
 s/^<[^>]*>//
 s/\n.*$//

-- 
2.18.0.865.gffc8e1a3cd6