88ef06f3a9
Commands like 'export -p', 'set' and 'trap', and tracing enabled via 'set -x' generate output suitable as shell input by adding quotes as necessary. If there are control characters other than newline or invalid UTF-8 sequences, use $'...' and \OOO to display them safely. The resulting output is not parsable by a strict POSIX.1-2008 shell but sh from FreeBSD 9.0 and newer and many other shells can parse it.
8 lines
137 B
Plaintext
8 lines
137 B
Plaintext
# $FreeBSD$
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key=`printf '\r\t\001\200\300'`
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r=`{ set -x; : "$key"; } 2>&1 >/dev/null`
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case $r in
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*[![:print:]]*) echo fail; exit 3
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esac
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