hush_test/hush-vars/param_expand_alt.tests

# 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} _${f:+word}
1	niro	984	# first try some invalid patterns (do in subshell due to parsing error)
2			"$THIS_SH" -c 'echo ${+} ; echo moo'
3			"$THIS_SH" -c 'echo ${:+} ; echo moo'
4
5			# now some funky ones
6			echo _${#+} _${#:+}
7
8			# now some valid ones
9			set --
10			echo _$1 _${1+} _${1:+} _${1+word} _${1:+word}
11
12			set -- aaaa
13			echo _$1 _${1+} _${1:+} _${1+word} _${1:+word}
14
15			unset f
16			echo _$f _${f+} _${f:+} _${f+word} _${f:+word}
17
18			f=
19			echo _$f _${f+} _${f:+} _${f+word} _${f:+word}
20
21			f=fff
22			echo _$f _${f+} _${f:+} _${f+word} _${f:+word}