According to the docs fzf can integrate with tmux for the terminal splitting. That's probably easier, just use screen or tmux to run your script in one pane and a regular terminal in the other. But if you do want to reinvent the wheel, then yea, Curses would be one way.

In reply to Re: textual GUI using only part of the terminal by Anonymous Monk
in thread textual GUI using only part of the terminal by morgon

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