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On 6/22/19 1:52 AM, Jorge Almeida wrote: |
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> I think (wrongly?) that readline deals with redrawing when typing a |
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> command in the shell. |
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I believe that readline comes into play with the shell which is |
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controlling the command line. Any past output, even old command lines, |
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are historical data that the shell is not concerned with. |
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Think about it this way, on an old school TTY with keyboard and printer, |
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the shell would only be responsible for the current line. Anything |
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prior to that is analogues to what has been printed and no longer the |
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shell's concern. Conversely, the terminal emulator; XTerm / urxvt / et |
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al., worries about (re)displaying what has been previously printed. |
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Readline, via the shell, is only involved with the current command prompt. |
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