pgsql: Escape output of pg_amcheck test

Escape output of pg_amcheck test

The pg_amcheck test reports a skip message if the layout of the index
does not match expectations. That message includes the bytes that
were expected and the ones that were found. But the found ones are
arbitrary bytes, which can have funny effects on the terminal when
they are printed. To avoid that, escape non-word characters before
printing.

Reviewed-by: Aleksander Alekseev <aleksander(at)timescale(dot)com>
Discussion: https://www.postgresql.org/message-id/flat/3f96f079-64e5-468a-8a19-cb481f0d31e5%40eisentraut.org

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/6a3631e251d1390673aee469c0cd672cac6195ef

Modified Files
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src/bin/pg_amcheck/t/004_verify_heapam.pl | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)