Device status report (DSR 5)

Category: device · Tags: ECMA-48 Standard, VT100 · Specification ↗

DSR 5 queries the terminal's operational status. The query is ESC [ 5 n. The terminal responds with ESC [ 0 n to indicate it is functioning normally. This is a basic health check that also serves as a synchronization point — applications can send DSR 5 and wait for the response to ensure all previous output has been processed.

Supported by 0 of 6 backends (0%)

Support Matrix

Backend	Version	Support	Notes
Alacritty	0.26.0	~ partial	Headless mode has no output stream for DSR responses
Ghostty	1.3.1	~ partial	Headless mode has no output stream for DSR responses
Kitty	0.40.0	~ partial	Headless mode has no output stream for DSR responses
WezTerm	0.1.0-fork.5	~ partial	Headless mode has no output stream for DSR responses
xterm.js	5.5.0	~ partial	Headless mode has no output stream for DSR responses
vt100	0.1.0	✗ no	No output stream — pure TypeScript emulator

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