Re: 'wait -n' with and without id arguments

[Chet Ramey]

On 8/30/24 11:06 PM, Zachary Santer wrote:
> CWRU/CWRU.chlog:
>  >    8/26
>  >    ----
>
>  > execute_cmd.c
>  > [...]
>  > - execute_connection: in default mode, bash performs jobs notifications
>  >   in an interactive shell between commands separated by ';' or '\n'.
>  >   It shouldn't do this in posix mode, since posix now specifies when
>  >   notifications can take place
>
> I forgot your comment below about the shell not being interactive any time 
> it's not accepting input from the user and took this to mean that 'jobs' 
> notifications would only ever be printed immediately prior to a prompt when 
> bash is in posix mode. I don't understand what posix mode changes relative 
> to the existing behavior if not that.

In default mode, bash prints job notifications when executing a list (it
calls lists `connections' internally). Commands in lists can be delimited
by a `;' or newline; bash performs notifications between executing, say,
the left and right sides of `command 1; command 2'. Now it doesn't do that
in posix mode. It still does job notifications in other places that aren't
strictly posix conformant.

>  > jobs.c
>  > - notify_and_cleanup: make interactive shells notifying during sourced
>  >   scripts dependent on the shell compatibility level and inactive in
>  >   versions beyond bash-5.2
>  >   Inspired by report from Zachary Santer <zsanter@gmail.com 
> <mailto:zsanter@gmail.com>>
>
> Making 'jobs' notifications not happen while the interactive shell is 
> sourcing a script misses the cases where a function is otherwise executed 
> directly from the command line and of course a whole bunch of commands 
> separated by semicolons entered in one command line.

What behavior do you want from the command lists that differs from what I
described above? Since shell functions are essentially lists, you should
get the same behavior from both.

--
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/

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