Terminal applications have a “cursor” that they can move around, just like a text editor. You can tell that cursor “go to line 3, delete everything, then print out this new text” by using VT100 sequences. And you can use it to replace existing characters with new ones, without re-emitting a whole line.
Russell Brandom
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"These deals mostly increase Reddit's visibility and strategic importance, rather than being the original reason people use it," says Oc.
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