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D. Ben Knoble
10040bc9cd
Code like ${!#} flags the "#" as shDerefWordError [1]; the "!prefix"
syntax region delegates to one of the shDerefSpecial handlers via
@shDerefList, but it misses the "#" case as valid for ${##} and ${!#}.
[1]: https://vi.stackexchange.com/q/48617/10604
Correct that. Indirection is only valid in Bash in Ksh, so rearrange the
"!" handling to be conditional.
closes: #20016
Helped-by: Christian Brabandt <cb@256bit.org>
Signed-off-by: D. Ben Knoble <ben.knoble+github@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
38 lines
692 B
Bash
38 lines
692 B
Bash
#!/bin/bash
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# bash 5.3+ supports command substitution that is very similar
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# (but not identical) to ksh/mksh.
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echo ${ echo one;}
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echo ${ echo two
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}
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echo ${
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echo three ;}
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echo ${ echo 'four'; }
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echo ${ echo 'five' ;}
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echo ${ echo 'six'
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}
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echo ${ echo 'seven' ;}
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echo ${ echo 'eight'; }
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typeset nine=${ pwd; }
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echo ${ echo 'nine' ;
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}
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valsubfunc() {
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REPLY=$1
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}
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echo ${|valsubfunc ten;}
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echo "${|valsubfunc eleven; }"
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printf '%s\n' "${|valsubfunc twelve ;}"
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unlucky=${|valsubfunc thirteen
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}
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typeset notafloat=${|valsubfunc notanumber ;
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}
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echo $unlucky $notanumber
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${|echo fourteen;}
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${|echo fifteen
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}
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echo "${!#}" # last positional argument
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echo "${!@}" # deref
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echo "${#PATH}" # length
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