78 lines
1.8 KiB
Text
78 lines
1.8 KiB
Text
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unset a
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printf "%s\n" ${a:=a\ b}
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echo "$a"
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unset v
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recho ${v=a\ b} x ${v=c\ d}
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unset v
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recho "${v=a\ b}" x "${v=c\ d}"
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unset a v
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recho "foo ${IFS+'bar'} baz"
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recho "a ${IFS+b c} d"
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recho "a ${IFS+"b c"} d"
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u=x
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recho "foo ${IFS+a$u{{{\}b} c ${IFS+d{}} bar" ${IFS-e{}} baz
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a=foo
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recho "${IFS+'$a'}"
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recho "${IFS+"'$a'"}"
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recho ${IFS+'$a'}
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recho ${IFS+"'$a'"}
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unset a u
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x='foo*bar'
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recho "${x##"}"}"
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recho "${x##'}'}"
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recho "${x##'}"
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recho "${x:-'}'}"
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foo="x'a'y"
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recho "${foo%*'a'*}"
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unset x
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unset u
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v=w
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printf '<%s> ' ${u+x} . ${v+x} . "${u+x}" . "${v+x}" .; echo
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printf '<%s> ' ${u-x} . ${v-x} . "${u-x}" . "${v-x}" .; echo
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printf '<%s> ' ${u=x} . ${v=x} . "${u=x}" . "${v=x}" .; echo
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printf '<%s> ' ${u?x} . ${v?x} . "${u?x}" . "${v?x}" .; echo
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printf '<%s> ' ${u#x} . ${v#x} . "${u#x}" . "${v#x}" .; echo
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printf '<%s> ' ${u%x} . ${v%x} . "${u%x}" . "${v%x}" .; echo
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printf '<%s> ' ${u:+x} . ${v:+x} . "${u:+x}" . "${v:+x}" .; echo
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printf '<%s> ' ${u:-x} . ${v:-x} . "${u:-x}" . "${v:-x}" .; echo
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printf '<%s> ' ${u:=x} . ${v:=x} . "${u:=x}" . "${v:=x}" .; echo
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printf '<%s> ' ${u:?x} . ${v:?x} . "${u:?x}" . "${v:?x}" .; echo
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# these are invalid substitution operators
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#printf '<%s> ' ${u:#x} . ${v:#x} . "${u:#x}" . "${v:#x}" .; echo
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#printf '<%s> ' ${u:%x} . ${v:%x} . "${u:%x}" . "${v:%x}" .; echo
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unset foo
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set -o posix
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recho "${IFS+'bar}"
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recho "foo ${IFS+'bar} baz"
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recho ${IFS+'}'z}
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recho "${IFS+'}'z}"
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: ${TMPDIR:=/var/tmp}
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rm -f $TMPDIR/sh
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cp ${THIS_SH} $TMPDIR/sh
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THIS_SH=$TMPDIR/sh ${THIS_SH} ./posixexp1.sub || echo "sh posixexp1.sub: test $? failed"
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${THIS_SH} ./posixexp1.sub || echo "bash posixexp1.sub: test $? failed"
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THIS_SH=$TMPDIR/sh ${THIS_SH} ./posixexp2.sub || echo "sh posixexp2.sub: test $? failed"
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rm -f $TMPDIR/sh
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# this will be an error
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foo=bar
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echo "${foo:-"a}"
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