busybox/shell/hush_test/hush-vars/param_expand_alt.tests
2009-03-31 22:14:32 +00:00

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# first try some invalid patterns (do in subshell due to parsing error)
"$THIS_SH" -c 'echo ${+} ; echo moo'
"$THIS_SH" -c 'echo ${:+} ; echo moo'
# now some funky ones
echo _${#+} _${#:+}
# now some valid ones
set --
echo _$1 _${1+} _${1:+} _${1+word} _${1:+word}
set -- aaaa
echo _$1 _${1+} _${1:+} _${1+word} _${1:+word}
unset f
echo _$f _${f+} _${f:+} _${f+word} _${f:+word}
f=
echo _$f _${f+} _${f:+} _${f+word} _${f:+word}
f=fff
echo _$f _${f+} _${f:+} _${f+word} _${f:+word}