(28-05-2016, 10:50 AM)pranomostro Wrote: The author gave a proposal of two other standard file descriptors: usrin and usrout, which can be used for user in- and output
while the program is running. If somebody here knows pick(1), he/she knows the truth (pick lets you select the lines that get sent
down the pipeline):

Some ugly hacking with the tty has to be done.

Interestingly enough, I have a set of POCs in my ~/devel/snippet directory which does just that. In the end, it's not that ugly, really. The solution is simply to open your controlling terminal an use it for user interaction instead of the naive way of reading/writing on stdin/stdout.
I hope that's what pick(1) does, and I wish that's what dialog did.

Note that the thread is quite long, so I have not read carefully the whole thing (linear forums make it hard to follow interesting parts of a thread).