Georgi Dimitrov 958dc20024 fix: race condition on repaint with alt screen ...

I didn't realise at the time, but the tea.Program and the renderer share
the mutex. This make the code difficult to reason about - it turns out
the program sometimes acquires the lock and then calls the
`setAltScreen` method of the renderer which in turns calls `repaint`.
That causes a deadlock as `repaint` is trying to acquire the lock too.

2022-06-07 06:47:46 +02:00

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