Soft reset (DECSTR)

Category: reset · Tags: DEC Private Modes, VT510 · Specification ↗

DECSTR (Soft Terminal Reset) resets terminal modes and attributes without clearing the screen. The sequence is ESC [ ! p. Unlike RIS (full reset), DECSTR does not clear the display, scrollback, or cursor position. It resets modes (auto-wrap, origin, insert), SGR attributes, character sets, and scroll regions.

Supported by 1 of 6 backends (17%)

Support Matrix

Backend	Version	Support	Notes
xterm.js	5.5.0	✓ yes
Alacritty	0.26.0	~ partial	DECSTR resets modes but headless probe reads stale state
Ghostty	1.3.1	~ partial	DECSTR resets modes but headless probe reads stale state
Kitty	0.40.0	~ partial	DECSTR resets modes but headless probe reads stale state
WezTerm	0.1.0-fork.5	~ partial	DECSTR resets modes but headless probe reads stale state
vt100	0.1.0	✗ no	DECSTR not implemented — pure TypeScript emulator

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