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Re: CTLNUL leakage in bash-20190220
From: |
Chet Ramey |
Subject: |
Re: CTLNUL leakage in bash-20190220 |
Date: |
Mon, 11 Mar 2019 11:20:52 -0400 |
User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:60.0) Gecko/20100101 Thunderbird/60.5.3 |
On 3/8/19 7:18 PM, Grisha Levit wrote:
> On Tue, Mar 5, 2019 at 11:26 AM Chet Ramey <chet.ramey@case.edu> wrote:
>> This is still a WIP, keep the test cases coming.
>
> bash removes the surrounding space in these cases (all other shells
> print `< X >'):
Thanks for the report.
>
> IFS=; set -- X
> printf "<%s>" ${0+ "$@" }
> <X>
> printf "<%s>" ${0+ $@ }
> <X>
> printf "<%s>" ${0+ $* }
> <X>
It has to do with $@ and $* and null IFS; any other combination works fine.
--
``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/