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This question is related to this one in case someone is interested.

I want to write script like that

$@ | tee /tmp/unique_name
if [[ "${pipestatus[1]}" -eq 0 ]]; then
    sleep 2
    tmux select-pane -t.0 \; resize-pane -Z
elif [[ $(wc -l /tmp/unique_name | awk '{print $1}') -gt $LINES ]] && [[ $(grep pdb /tmp/unique_name) ]]; then
    tmux copy-mode
fi

Checking with grep would be just a heuristic that works only for one language, so I'd like to avoid that and to know for sure that program asked user for input.

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