Option to set exit status code when query doesn't yield any results

[Yv-vY]

Problem Statement

There's currently no programmatic way of testing if a node has been found.

It would be nice to add an option (maybe -s) so xq return an exit status code depending on wether a node has been found or not, à la grep.

Expected Result

> echo '<?xml version="1.0"?><root></root>' | xq -s -q none
> echo $?
1

[sibprogrammer]

Thank you for your report!