Gemini CLI v0.66 is fixes only, with the keybindings.json keys array now working

Gemini CLI v0.66.0 adds no features. All 26 entries under "What's Changed" are fixes, refactors or release chores.

One of them is the kind worth knowing about, though: a setting the documentation already describes was not actually working. The keys array in keybindings.json works as of this release.

The keys array in keybindings.json now works

The fix is PR #29773. Key bindings live in your home gemini directory, typically ~/.gemini/keybindings.json. It is a JSON array in a schema close to VS Code's, with a command and either a key or a keys array per entry.

[
  {
    "command": "edit.clear",
    "key": "cmd+l"
  },
  {
    "command": "-app.toggleYolo",
    "key": "ctrl+y"
  },
  {
    "command": "-input.newline",
    "keys": ["alt+enter", "ctrl+enter", "shift+enter", "ctrl+j"]
  },
  {
    "command": "input.newline",
    "keys": ["enter", "shift+enter"]
  }
]

Form	What it means
- prefixed on command	Unbinds the key, defaults included
A keys array	Binds or unbinds several keys in one entry; the first key is the primary shortcut shown in the UI
Modifiers	ctrl, shift, alt (opt / option), cmd (meta)

Matching is explicit: a binding for ctrl+f fires on ctrl+f only, not ctrl+shift+f or alt+ctrl+f. And because the same key can be bound to different commands in different contexts, adding a binding does not unbind the key from anything else. To remove the old one, add a separate - prefixed entry.

Fixes around .env and the git environment

Three fixes concern the order configuration is loaded in.

PR	What changed
#29750	Settings placeholders are resolved after .env files load
#29832	The user-level ~/.gitconfig is preserved in shell and git environments
#29760	Interactive credential and SSH prompts are disabled in getSafeGitEnv

The first matters if your settings file references a value defined in .env. Resolving before the load leaves the reference empty.

A related documented setting is advanced.ignoreLocalEnv (default false), which controls whether generic .env files in the project directory are ignored — the lever to reach for when a project's .env should not be read at all.

The third matters for unattended runs. When git asks for a credential or an SSH passphrase interactively, nobody is there to answer and the run hangs. Disabling those prompts makes it fail instead.

MCP and authentication fixes

• MCP OAuth supports private network endpoints (PR #29844), on an opt-in basis — relevant when the MCP server lives inside your network
• False positives in isAuthenticationError are prevented (PR #29835), where non-authentication failures were classified as authentication errors
• Update verification tightened (PR #29757): the active binary is checked after an update, so a PATH-shadowed older binary is no longer reported as a successful update

For MCP configuration generally, see Setting up MCP servers in Gemini CLI.

The rest, and a Gemini 4 banner

The visible addition is a banner saying Gemini CLI is not optimized for Gemini 4 (PR #29774).

On rendering: synchronized output with isolated spinner rendering, debug console height calculation and flickering, right-hand border bleed in scrollable tool containers, preserved terminal scrollback during viewport refreshes, and rounding before unit selection in formatDuration.

Also: openDiff now formats and quotes Windows diff command arguments, SKILL.md frontmatter parsing handles single-line descriptions, slash-command conflict dedupe resets when conflicts reappear, and the bootstrap parent forwards termination signals to its child process.

For the previous release, see Gemini CLI v0.65 enforces read-only settings in untrusted folders.

Summary

• v0.66.0 adds no features; all 26 "What's Changed" entries are fixes, refactors or release chores
• The keys array in keybindings.json works now; unbind by prefixing command with -
• When a binding never fires, check what the terminal sends with Debug Keystroke Logging and f12
• Settings placeholders are resolved after .env files load
• ~/.gitconfig is preserved, and git's interactive prompts are disabled