Bug 7610

Summary:	Unable to feed "trap -p" output into a pipe
Product:	Sisyphus	Reporter:	at <at>
Component:	bash	Assignee:	placeholder <placeholder>
Status:	CLOSED NOTABUG	QA Contact:	qa-sisyphus
Severity:	normal
Priority:	P2	CC:	glebfm, ldv, placeholder, vt
Version:	unstable
Hardware:	all
OS:	Linux
URL:	http://lists.gnu.org/archive/html/bug-bash/2006-01/msg00019.html

Description at@altlinux.org 2005-08-09 03:33:33 MSD

bash-2.05b$ trap -p
bash-2.05b$ trap "echo ..." EXIT
bash-2.05b$ trap -p EXIT
trap -- 'echo ...' EXIT
bash-2.05b$ trap -p EXIT |wc -l
0
bash-2.05b$

Comment 1 Dmitry V. Levin 2005-12-31 02:21:47 MSK

Same happens with bash-3.0

Comment 2 Dmitry V. Levin 2006-01-07 01:14:29 MSK

Same with bash-3.1.1.

Comment 3 Dmitry V. Levin 2006-01-10 01:45:31 MSK

From Chet Ramey answer:
"Each element of a pipeline is run in a subshell.
Subshells don't traps from their parent."

http://lists.gnu.org/archive/html/bug-bash/2006-01/msg00019.html