Re: bash-3.1.1: unable to feed "trap -p" output into a pipe

[Chet Ramey]

Dmitry V. Levin wrote:
> Hi,
> 
> A "trap -p" output doesn't feed into a pipe:
> $ trap -p                                                                     
>                      
> $ trap "echo ..." EXIT                                                        
>                      
> $ trap -p EXIT                                                                
>                      
> trap -- 'echo ...' EXIT                                                       
>                                
> $ trap -p EXIT |wc -l                                                         
>                      
> 0                                                                             
>                                

Each element of a pipeline is run in a subshell.  Subshells don't
traps from their parent.

Chet
-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
( ``Discere est Dolere'' -- chet )
                                                Live Strong.
Chet Ramey, ITS, CWRU    chet@case.edu    http://cnswww.cns.cwru.edu/~chet/