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Re: Backslash mysteriously disappears in command expansion when unescapi


From: Chet Ramey
Subject: Re: Backslash mysteriously disappears in command expansion when unescaping would reference an existing file
Date: Wed, 22 May 2019 11:05:24 -0400
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:60.0) Gecko/20100101 Thunderbird/60.6.1

On 5/22/19 9:33 AM, Robert Elz wrote:
>     Date:        Wed, 22 May 2019 08:43:00 -0400
>     From:        Greg Wooledge <address@hidden>
>     Message-ID:  <address@hidden>
> 
>   | It seems to be unique to bash 5.  If it's a bug fix, then I'm not
>   | understanding the rationale.  Backslashes shouldn't be consumed during
>   | glob expansion.
> 
> They should - when a pattern comes from an expansion (be that a
> variable expansion, or as here, a command substitution) there needs
> to be a way to indicate whether the potential magic chars are in
> fact intended as magic chars, or as literals.   \ is used for that.

There is more discussion in

http://lists.gnu.org/archive/html/bug-bash/2019-02/msg00151.html

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



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