control-codes
A reference for terminal control sequences whose examples run live in libghostty-vt compiled to WebAssembly.
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Version history of website/content/notation.smd

October 2026

jcollie.dev
Document xterm's ColumnMode and DECNCSM alongside DECCOLM
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jcollie.dev
Add DECRQCRA cases with checksum reports allowed
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jcollie.dev
Correct the cases a real xterm contradicts, and check them in CI
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jcollie.dev
Give every OSC its own page and index entry
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jcollie.dev
Give each dynamic color, and OSC 104 and 105, a page
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jcollie.dev
Document the rest of the OSCs libghostty-vt recognizes
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jcollie.dev
Give ConEmu's OSC 9 extensions and progress reports their own page
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jcollie.dev
Document XTWINOPS, XTVERSION and DECRQSS
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jcollie.dev
Document OSC 7, 8, 9, 52, 133 and 777
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jcollie.dev
Document the color OSCs, with xterm's default colors
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jcollie.dev
Finish DEC's functions; follow a default xterm when it ignores one
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jcollie.dev
Follow xterm where DEC STD 070 and xterm disagree, and say so
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jcollie.dev
Start on DEC private sequences: margins, modes, reports, selective erase
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jcollie.dev
Check what the terminal sends back: DSR, DA, ENQ and BEL
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jcollie.dev
Add a terminal control sequence reference with live examples
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