macOS：Ghostty terminal: Ctrl+A, Ctrl+E, Ctrl+U, Ctrl+K do not work in Claude Code (work in iTerm2)

[aa122121]

I encountered a keybinding compatibility issue between Ghostty and iTerm2 when using Claude Code in the terminal:

• In iTerm2: The following readline-style keybindings work as expected inside Claude Code:
  Ctrl+A: Jump to the start of the current line
  Ctrl+E: Jump to the end of the current line
  Ctrl+U: Delete from the cursor to the start of the line
  Ctrl+K: Delete from the cursor to the end of the line

• In Ghostty: All four keybindings (Ctrl+A, Ctrl+E, Ctrl+U, Ctrl+K) have no effect inside Claude Code. However, they work normally in other terminal contexts (e.g., the shell prompt) within Ghostty.

OS: 13.7.8 (22H730)
Ghostty version: 1.2.3

[rhodes-b]

this is likely a claude code issue that it doesn't understand fixterms which is the default encoding mechanism used by ghostty (it also supports kitty keyboard protocol). Ghostty has taken a hard stance on getting rid of fixterms you can modify the keybinds yourself in the config to match what iterm outputs or have the claude folks create a tui that actually works without hacks like this #9844