Felipe Coury 87d2235b54 fix(tui): support modified backspace/delete keys (#21058)
## Why

Fixes #21046.

Codex TUI 0.128.0 can show Backspace/Delete-related editor shortcuts in
`/keymap`, but Windows-style modified Backspace/Delete events were still
dropped by the composer because the default editor keymap did not
include those modified special-key variants. On Windows/CMD this meant
`Shift+Backspace` and `Shift+Delete` did not fall through to normal
character deletion, and `Ctrl+Backspace` / `Ctrl+Delete` did not perform
the word deletion users expect from Windows text inputs.

## What Changed

- Added default editor bindings for `shift-backspace` and `shift-delete`
so shifted delete keys keep normal grapheme deletion behavior.
- Added default editor bindings for `ctrl-backspace`,
`ctrl-shift-backspace`, `ctrl-delete`, and `ctrl-shift-delete` so
Windows-style word deletion works when terminals preserve those
modifiers.
- Added regression coverage for the resolved default keymap and textarea
behavior.

## How to Test

1. Start Codex in the TUI on Windows CMD or another terminal that
reports modified Backspace/Delete keys distinctly.
2. Type `hello world` in the composer.
3. Press `Ctrl+Backspace`; confirm `world` is removed and `hello `
remains.
4. Type `world` again, move the cursor before it, then press
`Ctrl+Delete`; confirm the next word is removed.
5. Type a few characters and press `Shift+Backspace` and `Shift+Delete`;
confirm they delete one character in the expected direction instead of
doing nothing.
6. Open `/keymap`, inspect the Editor deletion actions, and confirm the
modified Backspace/Delete aliases are visible as configurable defaults.

Targeted tests:
- `cargo test -p codex-tui keymap::tests`
- `cargo test -p codex-tui bottom_pane::textarea::tests`
- `cargo test -p codex-tui keymap_setup::tests`
87d2235b54 · 2026-05-04 17:16:41 -03:00
6,140 Commits
2026-05-03 10:23:09 -07:00
2026-04-24 17:49:29 -07:00
2025-04-16 12:56:08 -04:00
2025-04-16 12:56:08 -04:00
2026-04-24 17:49:29 -07:00
2026-04-07 10:55:58 -07:00

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