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Groups > gnu.bash.bug > #15545

Re: Parameter expansion resulting empty treated as if it's not empty

From Chet Ramey <chet.ramey@case.edu>
Newsgroups gnu.bash.bug
Subject Re: Parameter expansion resulting empty treated as if it's not empty
Date 2019-10-30 18:45 -0400
Organization ITS, Case Western Reserve University
Message-ID <mailman.37.1572475531.13325.bug-bash@gnu.org> (permalink)
References <CAH7i3Lp79s5Kpe+kg6thQtqpaVai19HMoDW1SXNF9Ae71p7HGQ@mail.gmail.com> <c8c05694-005c-9956-a071-a25c99f88be4@case.edu>

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On 10/30/19 7:12 AM, Oğuz wrote:
> Since
> 
> bash -c '${1##*""}' _ foo
> 
> prints an empty line, I was expecting
> 
> bash -c '${1##*"${1##*}"}' _ foo
> 
> to print an empty line too, but instead it prints foo.

Thanks for the report. The shell doesn't handle the second quoted string
correctly. I'll fix it for the next devel branch push.

Chet

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
		 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/

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Re: Parameter expansion resulting empty treated as if it's not empty Chet Ramey <chet.ramey@case.edu> - 2019-10-30 18:45 -0400

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