bug#34488: Add sort --limit, or document workarounds for sort|head error messages

[Pádraig Brady]

On 03/03/19 15:36, Pádraig Brady wrote:
> On 25/02/19 22:35, Pádraig Brady wrote:
>> Thanks for doing all that.
>> I've attached a few changes:
>>
>> - spelling fixes
>> - usage() clarified/reordered
>> - ensure sigset_t are initialized
>> - Don't setprocmask() unless specified
>> - Simplified SETMASK_SIGNAL_OPTION handling
>> - The test missed `env` as a prerequisite
>> - The test was slow/spun cpu, so used sleep instead of seq
>> - Used $SHELL in case sh didn't support trap
>>
>> I see that the last signal that `kill -l` lists is not included.
>> I think we should be processing SIGNUM_BOUND also?
> 
> An additional patch attached to replace --list-signal-actions
> with --list-ignored-signals.  This is simpler, and more symmetric
> with the other options. Also the extra output was moot I think
> since handlers are reset upon exec

I've locally adjusted the NEWS/texi for that patch also.
I've a local patch to include SIGNUM_BOUND which I won't spam the list with.

Attached is a patch to remove the -p and --set-mask options,
which I've a light preference for.
I'll think some more about it.

cheers,
Pádraig

env-remove-shortcuts.patch
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