[I'm not the maintainer of bash.]
* Filipus Klutiero <chea...@gmail.com>, 2014-01-12, 14:59:
A pipeline terminated by an ampersand causes the pipeline to be
executed asynchronously. Understandably, this means variable
assignments may not persist immediately. However, in my environment and
others (hence the upstream tag), asynchronous variable assignment is in
fact completely broken:
$ BAR=a echo $BAR &
[1] 24144
chealer@vinci:/var/log/apt$
[1]+ Done BAR=a echo $BAR
chealer@vinci:/var/log/apt$
I don't think what you're observing has anything to do with ampersands.
You get the same behavior without them:
$ BAR=a echo $BAR nothing
nothing
This is also how all other shells I know behave, so I doubt it's a bug.
--
Jakub Wilk
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