ClearScreen should clear scrollback buffer as well, or PSReadLine should implement ClearDisplay
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Evaluación
- Dificultad
- 4/5
- Tiempo estimado
- 3-5 días
- Aptitud para principiantes
- 45/100
Línea de trabajo
Start by locating the existing ClearScreen entry point and the terminal-handling code in PSReadLine. Compare the requested clear-display behavior with the current screen-only behavior, then verify that the screen and scrollback are cleared or that an equivalent ClearDisplay command is available.
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Descripción
Prerequisites
- Write a descriptive title.
Description of the new feature/enhancement
The GNU readline has clear-display command since version 8.1, about four years.
clear-display (M-C-l)Clear the screen and, if possible, the terminal’s scrollback buffer, then redraw the current line, leaving the current line at the top of the screen.
clear-screen (C-l)Clear the screen, then redraw the current line, leaving the current line at the top of the screen.
Clearing only screen without scrollback is rather useless, as it is garbled with old junk from previous commands.
There is a question on Super User, with answer suggesting to rebind Ctrl-L to a script executing cls command. This is very inefficient, if not say more.
So, PSReadLine ClearScreen should clear scrollback too, or it should implement ClearDisplay as well.
Proposed technical implementation details (optional)
Please don't do it the way libvte does - there is no excuse for them to do it that way.
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