Package: debian-policy
Version: 4.0.1.0
Severity: normal
set -e is not suffisant to detect error in pipe context
cat nonexistant | sed s/some//g will hapilly return 0 and do not fail
exec 3>&1; s=$(exec 4>&1 >&3; { cat nonexistant ; echo $? >&4; } | sed s/some//g ) && exit $s
this could be simplified by using make function
PIPESAFE=exec 3>&1; s=$$(exec 4>&1 >&3; { $(1) ; echo $$? >&4; } | $(2)) && exit $$s
Could deserve a footnote on 4.6. Error trapping in makefiles
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