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Reverse Wrap (Mode 45)

Category: cursor · Tags: Xterm Extensions

Reverse wrap mode (mode 45) allows backspace at column 0 to wrap to the end of the previous line. Without this mode, backspace at column 0 is a no-op. Useful for command-line editing across wrapped lines.
How this is tested: Enable mode 45, position at column 0 row 1, send BS, verify cursor wraps to end of row 0.

Supported by 4 of 12 backends (33%)

Terminal Applications

TerminalVersionSupportNotes
iTerm23.6.9? unknown
Ghostty1.3.1? unknown
cmux0.62.2? unknown
Kitty0.46.2? unknown
VS Code1.112.0? unknown
Warp0.2026.03.18.08.24.03? unknown
Cursor2.6.21? unknown
Terminal.app2.15? unknown

Headless Backends

Parser correctness only — a means the parser accepts the sequence.

BackendVersionSupportNotes
Alacritty0.26.0✓ yes
vt1000.2.1✓ yes
vterm0.2.0✓ yes
WezTerm0.1.0-fork.5✓ yes

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