[Toybox] [PATCH] xargs: add --process-slot-var.

[enh]

okay, here's take two...

[PATCH] xargs: add --process-slot-var.

This also requires that we properly track child pids, so we can map
between pids and slots.
---
 tests/xargs.test   |  2 ++
 toys/posix/xargs.c | 40 +++++++++++++++++++++++++++++-----------
 2 files changed, 31 insertions(+), 11 deletions(-)


On Wed, Nov 5, 2025 at 1:35 PM enh <enh at google.com> wrote:
>
> hmm... for this to be useful, i think we actually need to properly
> track children rather than just increment/decrement TT.np. as it is,
> this means the numbers are only meaningful until/unless we hit the
> TT.P limit, at which point the waitchild() call inside the
> input-parsing loop means we'll keep reusing the topmost values,
> whether the corresponding processes have exited or not.
>
> On Wed, Nov 5, 2025 at 11:52 AM enh <enh at google.com> wrote:
> >
> > ---
> >  tests/xargs.test   | 2 ++
> >  toys/posix/xargs.c | 8 ++++++--
> >  2 files changed, 8 insertions(+), 2 deletions(-)
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