Feature request: cancel a parallel group of sequence if one fails

[tfb-bull]

Hi,

I came across an interesting thought while using the sequencer API.
It could be interesting to be able to cancel the execution of a group of parallel sequences of actions if one of these sequence returns an error.

For instance, I have to run several group of commands but if one these group fails then the execution of all non-finished sequence should be stopped.
Let's take the following XML chunk as an example:

<par>
    <seq desc="cmd group 1">
        <action id="action1">mycmd -p a -l x
        <action id="action"2>othercm -p a -l x
    </seq>
    <seq desc="cmd group 2">
        <action id="action1">mycmd -p b -l y
        <action id="action"2>othercm -p b -l y
    </seq>
</par>

Both sequence are executed in parallel.
If "mycmd -p a -l x" of "cmd group 1" fails (for whatever reason), then the execution of the sequence "cmd group 2" should be stopped.

Regards,

[ghost]

This feature sounds great!