* where is this used?
@ 1996-04-25 5:50 Richard Coleman
0 siblings, 0 replies; 3+ messages in thread
From: Richard Coleman @ 1996-04-25 5:50 UTC (permalink / raw)
To: zsh-workers
The field `other' in the structure `job' appears to
only be set in execpline() and never used. Does anyone
know what this is for?
rc
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: where is this used?
1996-04-25 6:34 Sven Wischnowsky
@ 1996-04-25 6:48 ` Richard Coleman
0 siblings, 0 replies; 3+ messages in thread
From: Richard Coleman @ 1996-04-25 6:48 UTC (permalink / raw)
To: Sven Wischnowsky; +Cc: zsh-workers
> > The field `other' in the structure `job' appears to
> > only be set in execpline() and never used. Does anyone
> > know what this is for?
>
> Once upon a time... when I was fiddling with the execution code I used
> this field. It was used for stopping pipelines with loops (and other
> shell-internal things) at the end. For doing that the current shell
> forked and used the child to represent the end of the pipe. The other
> field of the job representing the stopped child held the job number of
> the `old' job (the one representing the head of the pipe), so that
> both of them could be made runnable.
>
> Since there have been lots of changes in the execution and signal code
> I no longer know if it is still needed (maybe the fact that it isn't
> used anymore is connected to the fact that several bugs -- like the
> infamous never-^C-less-bug -- have reappeared).
I just went through some of the older distributions looking into this.
It appears the `other' field first appeared in zsh-2.5.02. But in all
distributions it was only set and never used. So it's removal is probably
not the cause of our problem with signals.
rc
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: where is this used?
@ 1996-04-25 6:34 Sven Wischnowsky
1996-04-25 6:48 ` Richard Coleman
0 siblings, 1 reply; 3+ messages in thread
From: Sven Wischnowsky @ 1996-04-25 6:34 UTC (permalink / raw)
To: zsh-workers
Richard Coleman wrote:
>
> The field `other' in the structure `job' appears to
> only be set in execpline() and never used. Does anyone
> know what this is for?
>
Once upon a time... when I was fiddling with the execution code I used
this field. It was used for stopping pipelines with loops (and other
shell-internal things) at the end. For doing that the current shell
forked and used the child to represent the end of the pipe. The other
field of the job representing the stopped child held the job number of
the `old' job (the one representing the head of the pipe), so that
both of them could be made runnable.
Since there have been lots of changes in the execution and signal code
I no longer know if it is still needed (maybe the fact that it isn't
used anymore is connected to the fact that several bugs -- like the
infamous never-^C-less-bug -- have reappeared).
Bye
Sven
--
Sven Wischnowsky wischnow@informatik.hu-berlin.de
^ permalink raw reply [flat|nested] 3+ messages in thread
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