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38 lines
787 B
Plaintext
38 lines
787 B
Plaintext
import VTSequence from "@/components/VTSequence";
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# Scroll Down (SD)
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<VTSequence sequence={["CSI", "Pn", "T"]} />
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Inserts `n` lines at the top of the scroll region and shift existing
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lines down.
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This sequence is functionally identical to
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[Insert Line (IL)](/vt/il) with the cursor position set to the top of
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the scroll region. The cursor position after the operation must be unchanged
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from when SD was invoked.
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This sequence unsets the pending wrap state.
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## Validation
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### SD V-1: Outside of Top/Bottom Scroll Region
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```bash
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printf "\033[1;1H" # move to top-left
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printf "\033[0J" # clear screen
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printf "ABC\n"
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printf "DEF\n"
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printf "GHI\n"
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printf "\033[3;4r" # scroll region top/bottom
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printf "\033[2;2H"
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printf "\033[T"
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```
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```
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|ABC_____|
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|DEF_____|
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|________|
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|GHI_____|
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```
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