add -q option to disable printing to stdout

[Humm42]

Printing the status to stdout can be undesirable, as blocking pipes with
a filled buffer … block. Because of that, when using -s for starting a
process not reading its stdin, such as service managers, after some
usage dwl will freeze.

[djpohly]

How about closing stdin on the service manager? The startup command is fed to /bin/sh -c, so you can use something like:

dwl -s 's6-svscan ./local/share/s6 <&-'

and dwl will ignore the SIGPIPE/EPIPE when it tries to write.

[Humm42]

How about closing stdin on the service manager?

would work just fine; seems less intuitive to me—would still mention the problem in the docs README

[djpohly]

Sounds totally reasonable. I've updated the README to mention the behavior and provide the <&- solution.

Now to find out who does and doesn't read the README. :)