On Tue, Jul 15, 2025 at 6:52 AM Zachary Santer <zsan...@gmail.com> wrote: > > Alright, that's definitely what's going on.
Actually, no. I am having a heck of a time trying to duplicate this behavior any other way. See attached. This is the current tip of the devel branch, 80a8f650a1. It has to be commands executed separately on the command line? Could that be something about job control messing it up? On the bright side, John, if you're not running 'wait -n' on the command line or with PROMPT_COMMAND or something similar, I think you're good to go.
zsant@Zack2021HPPavilion MSYS ~/repos/bash
$ ./bash ~/random/wait-n-and-procsub run
+ : 'BASH_VERSION=5.3.0(1)-maint'
+ sleep 2
+ : 'pid 485'
+ : /dev/fd/63
++ sleep 3
+ : 'pid 486'
+ : 'pid 487'
+ wait -n -p waited_for -- 487
+ sleep 4
+ : waited_for=487
+ : SECONDS=4
+ set +x
zsant@Zack2021HPPavilion MSYS ~/repos/bash
$ ./bash -i ~/random/wait-n-and-procsub run
+ : 'BASH_VERSION=5.3.0(1)-maint'
+ sleep 2
+ : 'pid 489'
+ : /dev/fd/63
++ sleep 3
+ : 'pid 490'
+ : 'pid 491'
+ wait -n -p waited_for -- 491
+ sleep 4
[2]+ Done sleep 4
+ : waited_for=491
+ : SECONDS=4
+ set +x
zsant@Zack2021HPPavilion MSYS ~/repos/bash
$ ./bash
zsant@Zack2021HPPavilion MSYS ~/repos/bash
$ source ~/random/wait-n-and-procsub run
++ : 'BASH_VERSION=5.3.0(1)-maint'
++ sleep 2
++ : 'pid 493'
++ : /dev/fd/63
++ : 'pid 494'
+++ sleep 3
++ : 'pid 495'
++ sleep 4
++ wait -n -p waited_for -- 495
[2]+ Done sleep 4
++ : waited_for=495
++ : SECONDS=4
++ set +x
[1] Done sleep 2
zsant@Zack2021HPPavilion MSYS ~/repos/bash
$ exit
exit
zsant@Zack2021HPPavilion MSYS ~/repos/bash
$ ./bash
zsant@Zack2021HPPavilion MSYS ~/repos/bash
$ source ~/random/wait-n-and-procsub
zsant@Zack2021HPPavilion MSYS ~/repos/bash
$ wait_n_test
+ : 'BASH_VERSION=5.3.0(1)-maint'
+ sleep 2
[1] 497
+ : 'pid 497'
+ : /dev/fd/63
+ : 'pid 498'
++ sleep 3
[2] 499
+ : 'pid 499'
+ wait -n -p waited_for -- 499
+ sleep 4
[2]+ Done sleep 4
+ : waited_for=499
+ : SECONDS=4
+ set +x
[1] Done sleep 2
zsant@Zack2021HPPavilion MSYS ~/repos/bash
$ exit
exit
zsant@Zack2021HPPavilion MSYS ~/repos/bash
$ ./bash
zsant@Zack2021HPPavilion MSYS ~/repos/bash
$ {
SECONDS=0
set -x
: "BASH_VERSION=${BASH_VERSION}"
sleep 2 &
: "pid ${!}"
: <( sleep 3 )
: "pid ${!}"
sleep 4 &
: "pid ${!}"
wait -n -p waited_for -- "${!}"
: "waited_for=${waited_for}"
: "SECONDS=${SECONDS}"
set +x
}
+ : 'BASH_VERSION=5.3.0(1)-maint'
+ sleep 2
[1] 501
+ : 'pid 501'
+ : /dev/fd/63
+ : 'pid 502'
++ sleep 3
[2] 503
+ sleep 4
+ : 'pid 503'
+ wait -n -p waited_for -- 503
[2]+ Done sleep 4
+ : waited_for=503
+ : SECONDS=4
+ set +x
[1] Done sleep 2
zsant@Zack2021HPPavilion MSYS ~/repos/bash
$ exit
exit
zsant@Zack2021HPPavilion MSYS ~/repos/bash
$ ./bash
zsant@Zack2021HPPavilion MSYS ~/repos/bash
$ SECONDS=0
set -x
: "BASH_VERSION=${BASH_VERSION}"
sleep 2 &
: "pid ${!}"
: <( sleep 3 )
: "pid ${!}"
sleep 4 &
: "pid ${!}"
wait -n -p waited_for -- "${!}"
: "waited_for=${waited_for}"
: "SECONDS=${SECONDS}"
set +x
+ : 'BASH_VERSION=5.3.0(1)-maint'
+ sleep 2
[1] 505
+ : 'pid 505'
+ : /dev/fd/63
++ sleep 3
+ : 'pid 506'
+ sleep 4
[2] 507
+ : 'pid 507'
+ wait -n -p waited_for -- 507
[2]+ Done sleep 4
[1] Done sleep 2
+ : waited_for=507
+ : SECONDS=4
+ set +x
wait-n-and-procsub
Description: Binary data
