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23 lines
477 B
Plaintext
Executable File
23 lines
477 B
Plaintext
Executable File
# first try some invalid patterns (do in subshell due to parsing error)
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hush -c 'echo ${+} ; echo moo'
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hush -c 'echo ${:+} ; echo moo'
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# now some funky ones
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echo _${#+} _${#:+}
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# now some valid ones
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set --
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echo _$1 _${1+} _${1:+} _${1+word} _${1:+word}
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set -- aaaa
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echo _$1 _${1+} _${1:+} _${1+word} _${1:+word}
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unset f
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echo _$f _${f+} _${f:+} _${f+word} _${f:+word}
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f=
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echo _$f _${f+} _${f:+} _${f+word} _${f:+word}
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f=fff
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echo _$f _${f+} _${f:+} _${f+word} _${f:+word}
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