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Add control sequences for Alternate Screen Buffer

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Adds constants DECASB_ENTER and DECASB_EXIT to ansi.odin. ASB stands for Alternate Screen Buffer. DECASB_ENTER ( ?1049h ) saves the cursor position, clears the alternate buffer, and switches the view to said buffer. DECASB_EXIT ( ?1049l ) restores the main buffer's contents and the cursor position.
Commonly used by editors, games, and TUIs in general to avoid polluting the main buffer.
This commit is contained in:
bluziDev
2026-06-10 23:48:33 -06:00
committed by GitHub
parent d403e749ea
commit 83702108a4
1 changed files with 8 additions and 6 deletions
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core/terminal/ansi/ansi.odin
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@@ -32,12 +32,14 @@ DSR :: "6n" // Device Status Report
// CSI: private sequences
SCP :: "s" // Save Current Cursor Position
RCP :: "u" // Restore Saved Cursor Position
DECAWM_ON :: "?7h" // Auto Wrap Mode (Enabled)
DECAWM_OFF :: "?7l" // Auto Wrap Mode (Disabled)
DECTCEM_SHOW :: "?25h" // Text Cursor Enable Mode (Visible)
DECTCEM_HIDE :: "?25l" // Text Cursor Enable Mode (Invisible)
SCP :: "s" // Save Current Cursor Position
RCP :: "u" // Restore Saved Cursor Position
DECAWM_ON :: "?7h" // Auto Wrap Mode (Enabled)
DECAWM_OFF :: "?7l" // Auto Wrap Mode (Disabled)
DECTCEM_SHOW :: "?25h" // Text Cursor Enable Mode (Visible)
DECTCEM_HIDE :: "?25l" // Text Cursor Enable Mode (Invisible)
DECASB_ENTER :: "?1049h" // Alternate Screen Buffer (Enter)
DECASB_EXIT :: "?1049l" // Alternate Screen Buffer (Exit)
// SGR sequences