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Re: Inconsistent quote and escape handling in substitution part of param
From: |
Chet Ramey |
Subject: |
Re: Inconsistent quote and escape handling in substitution part of parameter expansions. |
Date: |
Tue, 28 Feb 2012 19:56:39 -0500 |
User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:8.0) Gecko/20111105 Thunderbird/8.0 |
On 2/28/12 5:49 PM, John Kearney wrote:
> On 02/28/2012 11:44 PM, Chet Ramey wrote:
>> echo "$(echo '$bar')"
>
> actually these both output the same in bash
> echo "$(echo '$bar')"
> echo $(echo '$bar')
Sure: the outer quotes don't affect the command between the parens. Not
only is it a new quoting context, it's a new parsing context entirely.
Parameter substitutions don't work like that.
Chet
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU chet@case.edu http://cnswww.cns.cwru.edu/~chet/
- Re: Inconsistent quote and escape handling in substitution part of parameter expansions., (continued)
- Re: Inconsistent quote and escape handling in substitution part of parameter expansions., Chet Ramey, 2012/02/28
- Re: Inconsistent quote and escape handling in substitution part of parameter expansions., John Kearney, 2012/02/28
- Re: Inconsistent quote and escape handling in substitution part of parameter expansions., Chet Ramey, 2012/02/28
- Re: Inconsistent quote and escape handling in substitution part of parameter expansions., Chet Ramey, 2012/02/28
- Re: Inconsistent quote and escape handling in substitution part of parameter expansions., John Kearney, 2012/02/28
- Re: Inconsistent quote and escape handling in substitution part of parameter expansions., John Kearney, 2012/02/28
- Re: Inconsistent quote and escape handling in substitution part of parameter expansions., Chet Ramey, 2012/02/28
- Re: Inconsistent quote and escape handling in substitution part of parameter expansions., Maarten Billemont, 2012/02/28
- Re: Inconsistent quote and escape handling in substitution part of parameter expansions., Chet Ramey, 2012/02/28
- Re: Inconsistent quote and escape handling in substitution part of parameter expansions., John Kearney, 2012/02/28
- Re: Inconsistent quote and escape handling in substitution part of parameter expansions.,
Chet Ramey <=
- Re: Inconsistent quote and escape handling in substitution part of parameter expansions., John Kearney, 2012/02/28
- Re: Inconsistent quote and escape handling in substitution part of parameter expansions., Chet Ramey, 2012/02/29
- Re: Inconsistent quote and escape handling in substitution part of parameter expansions., John Kearney, 2012/02/28
- Re: Inconsistent quote and escape handling in substitution part of parameter expansions., Chet Ramey, 2012/02/29
- Re: Inconsistent quote and escape handling in substitution part of parameter expansions., John Kearney, 2012/02/29
- Re: Inconsistent quote and escape handling in substitution part of parameter expansions., Chet Ramey, 2012/02/29
- Re: Inconsistent quote and escape handling in substitution part of parameter expansions., Eric Blake, 2012/02/29
- Re: Inconsistent quote and escape handling in substitution part of parameter expansions., Eric Blake, 2012/02/28
- Re: Inconsistent quote and escape handling in substitution part of parameter expansions., John Kearney, 2012/02/28
- Re: Inconsistent quote and escape handling in substitution part of parameter expansions., Bob Proulx, 2012/02/28