App cursor keys (DECCKM)

Category: modes · Tags: DEC Private Modes, VT100 · Specification ↗

DECCKM changes the escape sequences generated by arrow keys. Enable with ESC [ ? 1 h. In normal mode, arrow keys send CSI sequences (ESC [ A); in application mode, they send SS3 sequences (ESC O A). Full-screen applications typically enable application cursor mode to get unambiguous key input.

Supported by 6 of 6 backends (100%)

Support Matrix

Backend	Version	Support	Notes
Alacritty	0.26.0	✓ yes
Ghostty	1.3.1	✓ yes
Kitty	0.40.0	✓ yes
vt100	0.1.0	✓ yes
WezTerm	0.1.0-fork.5	✓ yes
xterm.js	5.5.0	✓ yes

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