we recently changed file linking so the model uses markdown links when
it wants something to be clickable.
This works well across the GUI surfaces because they can render markdown
cleanly and use the full absolute path in the anchor target.
A previous pass hid the absolute path in the TUI (and only showed the
label), but that also meant we could lose useful location info when the
model put the line number or range in the anchor target instead of the
label.
This follow-up keeps the TUI behavior simple while making local file
links feel closer to the old TUI file reference style.
key changes:
- Local markdown file links in the TUI keep the old file-ref feel: code
styling, no underline, no visible absolute path.
- If the hidden local anchor target includes a location suffix and the
label does not already include one, we append that suffix to the visible
label.
- This works for single lines, line/column references, and ranges.
- If the label already includes the location, we leave it alone.
- normal web links keep the old TUI markdown-link behavior
some examples:
- `[foo.rs](/abs/path/foo.rs)` renders as `foo.rs`
- `[foo.rs](/abs/path/foo.rs:45)` renders as `foo.rs:45`
- `[foo.rs](/abs/path/foo.rs:45:3-48:9)` renders as `foo.rs:45:3-48:9`
- `[foo.rs:45](/abs/path/foo.rs:45)` stays `foo.rs:45`
- `[docs](https://example.com/docs)` still renders like a normal web
link
how it looks:
<img width="732" height="813" alt="Screenshot 2026-02-26 at 9 27 55 AM"
src="https://github.com/user-attachments/assets/d51bf236-653a-4e83-96e4-9427f0804471"
/>
Currently there is no bound on the length of a user message submitted in
the TUI or through the app server interface. That means users can paste
many megabytes of text, which can lead to bad performance, hangs, and
crashes. In extreme cases, it can lead to a [kernel
panic](https://github.com/openai/codex/issues/12323).
This PR limits the length of a user input to 2**20 (about 1M)
characters. This value was chosen because it fills the entire context
window on the latest models, so accepting longer inputs wouldn't make
sense anyway.
Summary
- add a shared `MAX_USER_INPUT_TEXT_CHARS` constant in codex-protocol
and surface it in TUI and app server code
- block oversized submissions in the TUI submit flow and emit error
history cells when validation fails
- reject heavy app-server requests with JSON-RPC `-32602` and structured
`input_too_large` data, plus document the behavior
Testing
- ran the IDE extension with this change and verified that when I
attempt to paste a user message that's several MB long, it correctly
reports an error instead of crashing or making my computer hot.
## Summary
- hide appended destinations for local path-style markdown links in the
TUI renderer
- keep web links rendering with their visible destination and style link
labels consistently
- add markdown renderer tests and a snapshot for the new file-link
output
## Testing
- just fmt
- cargo test -p codex-tui
<img width="1120" height="968" alt="image"
src="https://github.com/user-attachments/assets/490e8eda-ae47-4231-89fa-b254a1f83eed"
/>
Command-approval clients currently infer which choices to show from
side-channel fields like `networkApprovalContext`,
`proposedExecpolicyAmendment`, and `additionalPermissions`. That makes
the request shape harder to evolve, and it forces each client to
replicate the server's heuristics instead of receiving the exact
decision list for the prompt.
This PR introduces a mapping between `CommandExecutionApprovalDecision`
and `codex_protocol::protocol::ReviewDecision`:
```rust
impl From<CoreReviewDecision> for CommandExecutionApprovalDecision {
fn from(value: CoreReviewDecision) -> Self {
match value {
CoreReviewDecision::Approved => Self::Accept,
CoreReviewDecision::ApprovedExecpolicyAmendment {
proposed_execpolicy_amendment,
} => Self::AcceptWithExecpolicyAmendment {
execpolicy_amendment: proposed_execpolicy_amendment.into(),
},
CoreReviewDecision::ApprovedForSession => Self::AcceptForSession,
CoreReviewDecision::NetworkPolicyAmendment {
network_policy_amendment,
} => Self::ApplyNetworkPolicyAmendment {
network_policy_amendment: network_policy_amendment.into(),
},
CoreReviewDecision::Abort => Self::Cancel,
CoreReviewDecision::Denied => Self::Decline,
}
}
}
```
And updates `CommandExecutionRequestApprovalParams` to have a new field:
```rust
available_decisions: Option<Vec<CommandExecutionApprovalDecision>>
```
when, if specified, should make it easier for clients to display an
appropriate list of options in the UI.
This makes it possible for `CoreShellActionProvider::prompt()` in
`unix_escalation.rs` to specify the `Vec<ReviewDecision>` directly,
adding support for `ApprovedForSession` when approving a skill script,
which was previously missing in the TUI.
Note this results in a significant change to `exec_options()` in
`approval_overlay.rs`, as the displayed options are now derived from
`available_decisions: &[ReviewDecision]`.
## What Changed
- Add `available_decisions` to
[`ExecApprovalRequestEvent`](de00e932dd/codex-rs/protocol/src/approvals.rs (L111-L175)),
including helpers to derive the legacy default choices when older
senders omit the field.
- Map `codex_protocol::protocol::ReviewDecision` to app-server
`CommandExecutionApprovalDecision` and expose the ordered list as
experimental `availableDecisions` in
[`CommandExecutionRequestApprovalParams`](de00e932dd/codex-rs/app-server-protocol/src/protocol/v2.rs (L3798-L3807)).
- Thread optional `available_decisions` through the core approval path
so Unix shell escalation can explicitly request `ApprovedForSession` for
session-scoped approvals instead of relying on client heuristics.
[`unix_escalation.rs`](de00e932dd/codex-rs/core/src/tools/runtimes/shell/unix_escalation.rs (L194-L214))
- Update the TUI approval overlay to build its buttons from the ordered
decision list, while preserving the legacy fallback when
`available_decisions` is missing.
- Update the app-server README, test client output, and generated schema
artifacts to document and surface the new field.
## Testing
- Add `approval_overlay.rs` coverage for explicit decision lists,
including the generic `ApprovedForSession` path and network approval
options.
- Update `chatwidget/tests.rs` and app-server protocol tests to populate
the new optional field and keep older event shapes working.
## Developers Docs
- If we document `item/commandExecution/requestApproval` on
[developers.openai.com/codex](https://developers.openai.com/codex), add
experimental `availableDecisions` as the preferred source of approval
choices and note that older servers may omit it.
This reverts commit https://github.com/openai/codex/pull/12633. We no
longer need this PR, because we favor sending normal exec command
approval server request with `additional_permissions` of skill
permissions instead
## Summary
- allow `request_user_input` in Default collaboration mode as well as
Plan
- update the Default-mode instructions to prefer assumptions first and
use `request_user_input` only when a question is unavoidable
- update request_user_input and app-server tests to match the new
Default-mode behavior
- refactor collaboration-mode availability plumbing into
`CollaborationModesConfig` for future mode-related flags
## Codex author
`codex resume 019c9124-ed28-7c13-96c6-b916b1c97d49`
Previously, clients would call `thread/start` with dynamic_tools set,
and when a model invokes a dynamic tool, it would just make the
server->client `item/tool/call` request and wait for the client's
response to complete the tool call. This works, but it doesn't have an
`item/started` or `item/completed` event.
Now we are doing this:
- [new] emit `item/started` with `DynamicToolCall` populated with the
call arguments
- send an `item/tool/call` server request
- [new] once the client responds, emit `item/completed` with
`DynamicToolCall` populated with the response.
Also, with `persistExtendedHistory: true`, dynamic tool calls are now
reconstructable in `thread/read` and `thread/resume` as
`ThreadItem::DynamicToolCall`.
## Summary
- Promote `js_repl` to an experimental feature that users can enable
from `/experimental`.
- Add `js_repl` experimental metadata, including the Node prerequisite
and activation guidance.
- Add regression coverage for the feature metadata and the
`/experimental` popup.
## What Changed
- Changed `Feature::JsRepl` from `Stage::UnderDevelopment` to
`Stage::Experimental`.
- Added experimental metadata for `js_repl` in `core/src/features.rs`:
- name: `JavaScript REPL`
- description: calls out interactive website debugging, inline
JavaScript execution, and the required Node version (`>= v24.13.1`)
- announcement: tells users to enable it, then start a new chat or
restart Codex
- Added a core unit test that verifies:
- `js_repl` is experimental
- `js_repl` is disabled by default
- the hardcoded Node version in the description matches
`node-version.txt`
- Added a TUI test that opens the `/experimental` popup and verifies the
rendered `js_repl` entry includes the Node requirement text.
## Testing
- `just fmt`
- `cargo test -p codex-tui`
- `cargo test -p codex-core` (unit-test phase passed; stopped during the
long `tests/all.rs` integration suite)
Summary
- propagate approval policy from parent to spawned agents and drop the
Never override so sub-agents respect the caller’s request
- refresh the pending-approval list whenever events arrive or the active
thread changes and surface the list above the composer for inactive
threads
- add widgets, helpers, and tests covering the new pending-thread
approval UI state
![Uploading Screenshot 2026-02-25 at 11.02.18.png…]()
## Summary
- Preserve each skill’s raw permissions block as a permission_profile on
SkillMetadata during skill loading.
- Keep compiling that same metadata into the existing runtime
Permissions object, so current enforcement
behavior stays intact.
- When zsh-fork intercepts execution of a script that belongs to a
skill, include the skill’s
permission_profile in the exec approval request.
- This lets approval UIs show the extra filesystem access the skill
declared when prompting for approval.
## Why
`ExecApprovalRequestEvent` can carry a distinct `approval_id` for
subcommand approvals, including the `execve`-intercepted zsh-fork path.
The session registers the pending approval callback under `approval_id`
when one is present, but `ChatWidget` was stashing `call_id` in the
approval modal state. When the user approved the command in the TUI, the
response was sent back with the wrong identifier, so the pending
approval could not be matched and the approval callback would not
resolve.
Note `approval_id` was introduced in
https://github.com/openai/codex/pull/12051.
## What changed
- In `tui/src/chatwidget.rs`, `ChatWidget` now uses
`ExecApprovalRequestEvent::effective_approval_id()` when constructing
`ApprovalRequest::Exec`.
- That preserves the existing behavior for normal shell and
`unified_exec` approvals, where `approval_id` is absent and the
effective id still falls back to `call_id`.
- For subcommand approvals that provide a distinct `approval_id`, the
TUI now sends back the same key that
`Session::request_command_approval()` registered.
## Verification
- Traced the approval flow end to end to confirm the same effective
approval id is now used on both sides of the round trip:
- `Session::request_command_approval()` registers the pending callback
under `approval_id.unwrap_or(call_id)`.
- `ChatWidget` now emits `Op::ExecApproval` with that same effective id.
This PR replaces the old `additional_permissions.fs_read/fs_write` shape
with a shared `PermissionProfile`
model and wires it through the command approval, sandboxing, protocol,
and TUI layers. The schema is adopted from the
`SkillManifestPermissions`, which is also refactored to use this unified
struct. This helps us easily expose permission profiles in app
server/core as a follow-up.
## Why
`codex-rs/core/src/tools/runtimes/shell/unix_escalation.rs` previously
located `codex-execve-wrapper` by scanning `PATH` and sibling
directories. That lookup is brittle and can select the wrong binary when
the runtime environment differs from startup assumptions.
We already pass `codex-linux-sandbox` from `codex-arg0`;
`codex-execve-wrapper` should use the same startup-driven path plumbing.
## What changed
- Introduced `Arg0DispatchPaths` in `codex-arg0` to carry both helper
executable paths:
- `codex_linux_sandbox_exe`
- `main_execve_wrapper_exe`
- Updated `arg0_dispatch_or_else()` to pass `Arg0DispatchPaths` to
top-level binaries and preserve helper paths created in
`prepend_path_entry_for_codex_aliases()`.
- Threaded `Arg0DispatchPaths` through entrypoints in `cli`, `exec`,
`tui`, `app-server`, and `mcp-server`.
- Added `main_execve_wrapper_exe` to core configuration plumbing
(`Config`, `ConfigOverrides`, and `SessionServices`).
- Updated zsh-fork shell escalation to consume the configured
`main_execve_wrapper_exe` and removed path-sniffing fallback logic.
- Updated app-server config reload paths so reloaded configs keep the
same startup-provided helper executable paths.
## References
- [`Arg0DispatchPaths`
definition](e355b43d5c/codex-rs/arg0/src/lib.rs (L20-L24))
- [`arg0_dispatch_or_else()` forwarding both
paths](e355b43d5c/codex-rs/arg0/src/lib.rs (L145-L176))
- [zsh-fork escalation using configured wrapper
path](e355b43d5c/codex-rs/core/src/tools/runtimes/shell/unix_escalation.rs (L109-L150))
## Testing
- `cargo check -p codex-arg0 -p codex-core -p codex-exec -p codex-tui -p
codex-mcp-server -p codex-app-server`
- `cargo test -p codex-arg0`
- `cargo test -p codex-core tools::runtimes:🐚:unix_escalation:: --
--nocapture`
Rename `SkillMetadata.path` to `SkillMetadata.path_to_skills_md` for
clarity.
Would ideally change the type to `AbsolutePathBuf`, but that can be done
later.
- Add a hidden `realtime_conversation` feature flag and `/realtime`
slash command for start/stop live voice sessions.
- Reuse transcription composer/footer UI for live metering, stream mic
audio, play assistant audio, render realtime user text events, and
force-close on feature disable.
---------
Co-authored-by: Codex <noreply@openai.com>
## Problem
Diff lines used only foreground colors (green/red) with no background
tinting, making them hard to scan. The gutter (line numbers) also had no
theme awareness — dimmed text was fine on dark terminals but unreadable
on light ones.
## Mental model
Each diff line now has four styled layers: **gutter** (line number),
**sign** (`+`/`-`), **content** (text), and **line background** (full
terminal width). A `DiffTheme` enum (`Dark` / `Light`) is selected once
per render by probing the terminal's queried background via
`default_bg()`. A companion `DiffColorLevel` enum (`TrueColor` /
`Ansi256` / `Ansi16`) is derived from `stdout_color_level()` and gates
which palette is used. All style helpers dispatch on `(theme,
DiffLineType, color_level)` to pick the right colors.
| Theme Picker Wide | Theme Picker Narrow |
|---|---|
| <img width="1552" height="1012" alt="image"
src="https://github.com/user-attachments/assets/231b21b7-32d4-4727-80ed-7d01924954be"
/> | <img width="795" height="1012" alt="image"
src="https://github.com/user-attachments/assets/549cacdf-daec-43c9-ad64-2a28d16d140e"
/> |
| Dark BG - 16 colors | Dark BG - 256 colors | Dark BG - True Colors |
|---|---|---|
| <img width="1552" height="1012" alt="dark-16colors"
src="https://github.com/user-attachments/assets/fba36de3-c101-47d4-9e63-88cdd00410d0"
/> | <img width="1552" height="1012" alt="dark-256colors"
src="https://github.com/user-attachments/assets/f39e4307-c6b0-49c4-b4fe-bd26d3d8e41c"
/> | <img width="1552" height="1012" alt="dark-truecolor"
src="https://github.com/user-attachments/assets/1af4ec57-04bf-4dfb-8a44-0ab5e5aaaf18"
/> |
| Light BG - 16 colors | Light BG - 256 colors | Light BG - True Colors
|
|---|---|---|
| <img width="1552" height="1012" alt="light-16colors"
src="https://github.com/user-attachments/assets/2b5423d1-74b4-4b1e-8123-7c2488ff436b"
/> | <img width="1552" height="1012" alt="light-256colors"
src="https://github.com/user-attachments/assets/c94cff9a-8d3e-42c9-bbe7-079da39953a8"
/> | <img width="1552" height="1012" alt="light-truecolor"
src="https://github.com/user-attachments/assets/f73da626-725f-4452-99ee-69ef706df2c6"
/> |
## Non-goals
- No runtime theme switching beyond what `default_bg()` already
provides.
- No change to syntax highlighting theme selection or the highlight
module.
## Tradeoffs
- Three fixed palettes (truecolor RGB, 256-color indexed, 16-color
named) are maintained rather than using `best_color` nearest-match. This
is deliberate: `supports_color::on_cached(Stream::Stdout)` can misreport
capabilities once crossterm enters the alternate screen, so hand-picked
palette entries give better visual results than automatic quantization.
- Delete lines in the syntax-highlighted path get `Modifier::DIM` to
visually recede compared to insert lines. This trades some readability
of deleted code for scan-ability of additions.
- The theme picker's diff preview sets `preserve_side_content_bg: true`
on `ListSelectionView` so diff background tints survive into the side
panel. Other popups keep the default (`false`) to preserve their
reset-background look.
## Architecture
- **Color constants** are module-level `const` items grouped by palette
tier: `DARK_TC_*` / `LIGHT_TC_*` (truecolor RGB tuples), `DARK_256_*` /
`LIGHT_256_*` (xterm indexed), with named `Color` variants used for the
16-color tier.
- **`DiffTheme`** is a private enum; `diff_theme()` probes the terminal
and `diff_theme_for_bg()` is the testable pure-function version.
- **`DiffColorLevel`** is a private enum derived from `StdoutColorLevel`
via `diff_color_level()`.
- **Palette helpers** (`add_line_bg`, `del_line_bg`, `light_gutter_fg`,
`light_add_num_bg`, `light_del_num_bg`) each take `(DiffTheme,
DiffColorLevel)` or just `DiffColorLevel` and return a `Color`.
- **Style helpers** (`style_line_bg_for`, `style_gutter_for`,
`style_sign_add`, `style_sign_del`, `style_add`, `style_del`) each take
`(DiffLineType, DiffTheme, DiffColorLevel)` or `(DiffTheme,
DiffColorLevel)` and return a `Style`.
- **`push_wrapped_diff_line_inner_with_theme_and_color_level`** is the
innermost renderer, accepting both theme and color level so tests can
exercise any combination without depending on the terminal.
- **Line-level background** is applied via
`RtLine::from(...).style(line_bg)` so the tint extends across the full
terminal width, not just the text content.
- **Theme picker integration**: `ListSelectionView` gained a
`preserve_side_content_bg` flag. When `true`, the side panel skips
`force_bg_to_terminal_bg`, letting diff preview backgrounds render
faithfully.
## Observability
No new logging. Theme selection is deterministic from `default_bg()`,
which is already queried and cached at TUI startup.
## Tests
1. **`DiffTheme` is determined per `render_change` call** — if
`default_bg()` changes mid-render (e.g. `requery_default_colors()`
fires), different file chunks could render with different themes. Low
risk in practice since re-query only happens on explicit user action.
2. **16-color tier uses named `Color` variants** (`Color::Green`,
`Color::Red`, etc.) which the terminal maps to its own palette. On
unusual terminal themes these could clash with the background.
Acceptable since 16-color terminals already have unpredictable color
rendering.
3. **Light-theme `style_add` / `style_del` set bg but no fg** — on light
terminals, non-syntax-highlighted content uses the terminal's default
foreground against a pastel background. If the terminal's default fg
happens to be very light, contrast could suffer. This is an edge case
since light-terminal users typically have dark default fg.
4. **`preserve_side_content_bg` is a general-purpose flag but only used
by the theme picker** — if other popups start using side content with
intentional backgrounds they'll need to opt in explicitly. Not a real
risk today, just a note for future callers.
Fixes#12175
If a user types an npm package name with multiple `@` symbols like `npx
-y @foo/bar@latest`, the TUI currently treats this as though it's
attempting to invoke the file picker.
### What changed
- **Generalized `@` token parsing**
- `current_prefixed_token(...)` now treats `@` as a token start **only
at a whitespace boundary** (or start-of-line).
- If the cursor is on a nested `@` inside an existing
whitespace-delimited token (for example `@scope/pkg@latest`), it keeps
the surrounding token active instead of starting a new token at the
second `@`.
- It also avoids misclassifying mid-word usages like `foo@bar` as an `@`
file token.
- **Enter behavior with file popup**
- If the file-search popup is open but has **no selected match**,
pressing `Enter` now closes the popup and falls through to normal submit
behavior.
- This prevents pasted strings containing `@...` from blocking
submission just because file-search was active with no actionable
selection.
### Testing
I manually built and tested the scenarios involved with the bug report
and related use of `@` mentions to verify no regressions
## Why
This PR switches the `shell_command` zsh-fork path over to
`codex-shell-escalation` so the new shell tool can use the shared
exec-wrapper/escalation protocol instead of the `zsh_exec_bridge`
implementation that was introduced in
https://github.com/openai/codex/pull/12052. `zsh_exec_bridge` relied on
UNIX domain sockets, which is not as tamper-proof as the FD-based
approach in `codex-shell-escalation`.
## What Changed
- Added a Unix zsh-fork runtime adapter in `core`
(`core/src/tools/runtimes/shell/unix_escalation.rs`) that:
- runs zsh-fork commands through
`codex_shell_escalation::run_escalate_server`
- bridges exec-policy / approval decisions into `ShellActionProvider`
- executes escalated commands via a `ShellCommandExecutor` that calls
`process_exec_tool_call`
- Updated `ShellRuntime` / `ShellCommandHandler` / tool spec wiring to
select a `shell_command` backend (`classic` vs `zsh-fork`) while leaving
the generic `shell` tool path unchanged.
- Removed the `zsh_exec_bridge`-based session service and deleted
`core/src/zsh_exec_bridge/mod.rs`.
- Moved exec-wrapper entrypoint dispatch to `arg0` by handling the
`codex-execve-wrapper` arg0 alias there, and removed the old
`codex_core::maybe_run_zsh_exec_wrapper_mode()` hooks from `cli` and
`app-server` mains.
- Added the needed `codex-shell-escalation` dependencies for `core` and
`arg0`.
## Tests
- `cargo test -p codex-core
shell_zsh_fork_prefers_shell_command_over_unified_exec`
- `cargo test -p codex-app-server turn_start_shell_zsh_fork --
--nocapture`
- verifies zsh-fork command execution and approval flows through the new
backend
- includes subcommand approve/decline coverage using the shared zsh
DotSlash fixture in `app-server/tests/suite/zsh`
- To test manually, I added the following to `~/.codex/config.toml`:
```toml
zsh_path = "/Users/mbolin/code/codex3/codex-rs/app-server/tests/suite/zsh"
[features]
shell_zsh_fork = true
```
Then I ran `just c` to run the dev build of Codex with these changes and
sent it the message:
```
run `echo $0`
```
And it replied with:
```
echo $0 printed:
/Users/mbolin/code/codex3/codex-rs/app-server/tests/suite/zsh
In this tool context, $0 reflects the script path used to invoke the shell, not just zsh.
```
so the tool appears to be wired up correctly.
## Notes
- The zsh subcommand-decline integration test now uses `rm` under a
`WorkspaceWrite` sandbox. The previous `/usr/bin/true` scenario is
auto-allowed by the new `shell-escalation` policy path, which no longer
produces subcommand approval prompts.
## Summary
Introduces the initial implementation of Feature::RequestPermissions.
RequestPermissions allows the model to request that a command be run
inside the sandbox, with additional permissions, like writing to a
specific folder. Eventually this will include other rules as well, and
the ability to persist these permissions, but this PR is already quite
large - let's get the core flow working and go from there!
<img width="1279" height="541" alt="Screenshot 2026-02-15 at 2 26 22 PM"
src="https://github.com/user-attachments/assets/0ee3ec0f-02ec-4509-91a2-809ac80be368"
/>
## Testing
- [x] Added tests
- [x] Tested locally
- [x] Feature
rm `PRESETS` list harcoded in `model_presets` as we now have bundled
`models.json` with equivalent info.
update logic to rely on bundled models instead, update tests.
## Summary
Persist network approval allow/deny decisions as `network_rule(...)`
entries in execpolicy (not proxy config)
It adds `network_rule` parsing + append support in `codex-execpolicy`,
including `decision="prompt"` (parse-only; not compiled into proxy
allow/deny lists)
- compile execpolicy network rules into proxy allow/deny lists and
update the live proxy state on approval
- preserve requirements execpolicy `network_rule(...)` entries when
merging with file-based execpolicy
- reject broad wildcard hosts (for example `*`) for persisted
`network_rule(...)`
## Summary
This fixes a TUI race (https://github.com/openai/codex/issues/11008)
where pressing Enter with Steer enabled while the assistant is still
streaming the final answer could put Codex into a non-recoverable
“running” state (no further prompts handled until exiting and resuming).
## Root Cause
In steer mode, `InputResult::Submitted` could submit immediately even
while a final-answer stream was active. That immediate submission races
with turn completion and can strand turn state.
## Fix
When handling `InputResult::Submitted`, we now queue instead of
immediate-submit if a final-answer stream is active
(`stream_controller.is_some()`).
This keeps behavior deterministic:
- Prompt is preserved in the queue.
- `on_task_complete()` drains queued input through
`maybe_send_next_queued_input()`.
- Follow-up prompts continue in FIFO order after completion.
## Why this resolves the “dead mode”
The problematic timing window is now converted into queueing, so prompts
entered during final streaming are not lost and are processed after the
current output ends. The model continues handling prompts normally
without requiring `/quit` + `resume`.
## Tests
Added regression coverage in `tui/src/chatwidget/tests.rs`:
- `steer_enter_queues_while_final_answer_stream_is_active`
- `steer_enter_during_final_stream_preserves_follow_up_prompts_in_order`
Both fail on old behavior and pass with this fix.
## Summary
- Replace the `panic!` in `map_owned_wrapped_line_to_range` with a
recoverable flow that skips synthetic leading characters, logs a warning
on mid-line mismatch, and returns the mapped prefix range instead of
crashing
- Fixes a crash when `textwrap` produces owned lines with synthetic
indent prefixes (e.g. non-space indents via
`initial_indent`/`subsequent_indent`)
## Test plan
- [x] Added unit test for direct mismatch recovery
(`map_owned_wrapped_line_to_range_recovers_on_non_prefix_mismatch`)
- [x] Added end-to-end `wrap_ranges` test with non-space indents that
forces owned wrapped lines and validates full source reconstruction
- [x] Verify no regressions in existing `wrapping.rs` tests (`cargo test
-p codex-tui`)
Summary
- map csharp/c-sharp aliases to the existing C# syntax in the highlight
matcher
- ensure the extension list and tests include .cs and the new aliases so
coverage stays accurate
Testing
<img width="543" height="266" alt="image"
src="https://github.com/user-attachments/assets/e6c8a42f-649c-4c30-b574-421b4287534c"
/>
## Summary
- order bundled and custom themes together by name while keeping entries
stable across platforms
- update the theme fixture names and tests to assert case-insensitive
ordering
Alt-d should delete the next word. It didn’t. Now it does. Added a small
test so it stays that way.
Details:
File updated:
[codex-rs/tui/src/bottom_pane/textarea.rs](./codex-rs/tui/src/bottom_pane/textarea.rs)
Test added: delete_forward_word_alt_d — verifies Alt-d deletes the next
word and keeps the cursor position correct.
Solves Issue #12453
Summary
- distinguish exec end handling targets (active tracking, active orphan
history, new cell) so unified exec responses don’t clobber unrelated
exploring cells
- ensure orphan ends flush existing exploring history when complete,
insert standalone history entries, and keep active cells correct
- add regression tests plus a snapshot covering the new behavior and
expose the ExecCell completion result for verification
Fix for https://github.com/openai/codex/issues/12278
---------
Co-authored-by: Josh McKinney <joshka@openai.com>
## Summary
Adds syntax highlighting to the TUI for fenced code blocks in markdown
responses and file diffs, plus a `/theme` command with live preview and
persistent theme selection. Uses syntect (~250 grammars, 32 bundled
themes, ~1 MB binary cost) — the same engine behind `bat`, `delta`, and
`xi-editor`. Includes guardrails for large inputs, graceful fallback to
plain text, and SSH-aware clipboard integration for the `/copy` command.
<img width="1554" height="1014" alt="image"
src="https://github.com/user-attachments/assets/38737a79-8717-4715-b857-94cf1ba59b85"
/>
<img width="2354" height="1374" alt="image"
src="https://github.com/user-attachments/assets/25d30a00-c487-4af8-9cb6-63b0695a4be7"
/>
## Problem
Code blocks in the TUI (markdown responses and file diffs) render
without syntax highlighting, making it hard to scan code at a glance.
Users also have no way to pick a color theme that matches their terminal
aesthetic.
## Mental model
The highlighting system has three layers:
1. **Syntax engine** (`render::highlight`) -- a thin wrapper around
syntect + two-face. It owns a process-global `SyntaxSet` (~250 grammars)
and a `RwLock<Theme>` that can be swapped at runtime. All public entry
points accept `(code, lang)` and return ratatui `Span`/`Line` vectors or
`None` when the language is unrecognized or the input exceeds safety
guardrails.
2. **Rendering consumers** -- `markdown_render` feeds fenced code blocks
through the engine; `diff_render` highlights Add/Delete content as a
whole file and Update hunks per-hunk (preserving parser state across
hunk lines). Both callers fall back to plain unstyled text when the
engine returns `None`.
3. **Theme lifecycle** -- at startup the config's `tui.theme` is
resolved to a syntect `Theme` via `set_theme_override`. At runtime the
`/theme` picker calls `set_syntax_theme` to swap themes live; on cancel
it restores the snapshot taken at open. On confirm it persists `[tui]
theme = "..."` to config.toml.
## Non-goals
- Inline diff highlighting (word-level change detection within a line).
- Semantic / LSP-backed highlighting.
- Theme authoring tooling; users supply standard `.tmTheme` files.
## Tradeoffs
| Decision | Upside | Downside |
| ------------------------------------------------ |
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
-----------------------------------------------------------------------------------------------------------------------
|
| syntect over tree-sitter / arborium | ~1 MB binary increase for ~250
grammars + 32 themes; battle-tested crate powering widely-used tools
(`bat`, `delta`, `xi-editor`). tree-sitter would add ~12 MB for 20-30
languages or ~35 MB for full coverage. | Regex-based; less structurally
accurate than tree-sitter for some languages (e.g. language injections
like JS-in-HTML). |
| Global `RwLock<Theme>` | Enables live `/theme` preview without
threading Theme through every call site | Lock contention risk
(mitigated: reads vastly outnumber writes, single UI thread) |
| Skip background / italic / underline from themes | Terminal BG
preserved, avoids ugly rendering on some themes | Themes that rely on
these properties lose fidelity |
| Guardrails: 512 KB / 10k lines | Prevents pathological stalls on huge
diffs or pastes | Very large files render without color |
## Architecture
```
config.toml ─[tui.theme]─> set_theme_override() ─> THEME (RwLock)
│
┌───────────────────────────────────────────┘
│
markdown_render ─── highlight_code_to_lines(code, lang) ─> Vec<Line>
diff_render ─── highlight_code_to_styled_spans(code, lang) ─> Option<Vec<Vec<Span>>>
│
│ (None ⇒ plain text fallback)
│
/theme picker ─── set_syntax_theme(theme) // live preview swap
─── current_syntax_theme() // snapshot for cancel
─── resolve_theme_by_name(name) // lookup by kebab-case
```
Key files:
- `tui/src/render/highlight.rs` -- engine, theme management, guardrails
- `tui/src/diff_render.rs` -- syntax-aware diff line wrapping
- `tui/src/theme_picker.rs` -- `/theme` command builder
- `tui/src/bottom_pane/list_selection_view.rs` -- side content panel,
callbacks
- `core/src/config/types.rs` -- `Tui::theme` field
- `core/src/config/edit.rs` -- `syntax_theme_edit()` helper
## Observability
- `tracing::warn` when a configured theme name cannot be resolved.
- `Config::startup_warnings` surfaces the same message as a TUI banner.
- `tracing::error` when persisting theme selection fails.
## Tests
- Unit tests in `highlight.rs`: language coverage, fallback behavior,
CRLF stripping, style conversion, guardrail enforcement, theme name
mapping exhaustiveness.
- Unit tests in `diff_render.rs`: snapshot gallery at multiple terminal
sizes (80x24, 94x35, 120x40), syntax-highlighted wrapping, large-diff
guardrail, rename-to-different-extension highlighting, parser state
preservation across hunk lines.
- Unit tests in `theme_picker.rs`: preview rendering (wide + narrow),
dim overlay on deletions, subtitle truncation, cancel-restore, fallback
for unavailable configured theme.
- Unit tests in `list_selection_view.rs`: side layout geometry, stacked
fallback, buffer clearing, cancel/selection-changed callbacks.
- Integration test in `lib.rs`: theme warning uses the final
(post-resume) config.
## Cargo Deny: Unmaintained Dependency Exceptions
This PR adds two `cargo deny` advisory exceptions for transitive
dependencies pulled in by `syntect v5.3.0`:
| Advisory | Crate | Status |
|----------|-------|--------|
| RUSTSEC-2024-0320 | `yaml-rust` | Unmaintained (maintainer
unreachable) |
| RUSTSEC-2025-0141 | `bincode` | Unmaintained (development ceased;
v1.3.3 considered complete) |
**Why this is safe in our usage:**
- Neither advisory describes a known security vulnerability. Both are
"unmaintained" notices only.
- `bincode` is used by syntect to deserialize pre-compiled syntax sets.
Again, these are **static vendored artifacts** baked into the binary at
build time. No user-supplied bincode data is ever deserialized. - Attack
surface is zero for both crates; exploitation would require a
supply-chain compromise of our own build artifacts.
- These exceptions can be removed when syntect migrates to `yaml-rust2`
and drops `bincode`, or when alternative crates are available upstream.
## Problem
Long URLs containing `/` and `-` characters are split across multiple
terminal lines by `textwrap`'s default hyphenation rules. This breaks
terminal link detection: emulators can no longer identify the URL as
clickable, and copy-paste yields a truncated fragment. The issue affects
every view that renders user or agent text — exec output, history cells,
markdown, the app-link setup screen, and the VT100 scrollback path.
A secondary bug compounds the first: `desired_height()` calculations
count logical lines rather than viewport rows. When a URL overflows its
line and wraps visually, the height budget is too small, causing content
to clip or leave gaps.
Here is how the complete URL is interpreted by the terminal before
(first line only) and after (complete URL):
| Before | After |
|---|---|
| <img width="777" height="1002" alt="Screenshot 2026-02-17 at 7 59 11
PM"
src="https://github.com/user-attachments/assets/193a89a0-7e56-49c5-8b76-53499a76e7e3"
/> | <img width="777" height="1002" alt="Screenshot 2026-02-17 at 7 58
40 PM"
src="https://github.com/user-attachments/assets/0b9b4c14-aafb-439f-9ffe-f6bba556f95e"
/> |
## Mental model
The TUI now treats URL-like tokens as atomic units that must never be
split by the wrapping engine. Every call site that previously used
`word_wrap_*` has been migrated to `adaptive_wrap_*`, which inspects
each line for URL-like tokens and switches wrapping strategy
accordingly:
- **Non-URL lines** follow the existing `textwrap` path unchanged (word
boundaries, optional indentation, hyphenation).
- **URL-only lines** (with at most decorative markers like `│`, `-`,
`1.`) are emitted unwrapped so terminal link detection works; ratatui's
`Wrap { trim: false }` handles the final character wrap at render time.
- **Mixed lines** (URL + substantive non-URL prose) flow through
`adaptive_wrap_line` so prose wraps naturally at word boundaries while
URL tokens remain unsplit.
Height measurement everywhere now delegates to
`Paragraph::line_count(width)`, which accounts for the visual row cost
of overflowed lines. This single source of truth replaces ad-hoc line
counting in individual cells.
For terminal scrollback (the VT100 path that prints history when the TUI
exits), URL-only lines are emitted unwrapped so the terminal's own link
detector can find them. Mixed URL+prose lines use adaptive wrapping so
surrounding text wraps naturally. Continuation rows are pre-cleared to
avoid stale content artifacts.
## Non-goals
- Full RFC 3986 URL parsing. The detector is a conservative heuristic
that covers `scheme://host`, bare domains (`example.com/path`),
`localhost:port`, and IPv4 hosts. IPv6 (`[::1]:8080`) and exotic schemes
are intentionally excluded from v1.
- Changing wrapping behavior for non-URL content.
- Reflowing or reformatting existing terminal scrollback on resize.
## Tradeoffs
| Decision | Upside | Downside |
|----------|--------|----------|
| Heuristic URL detection vs. full parser | Fast, zero-alloc on the hot
path; conservative enough to reject file paths like `src/main.rs` |
False negatives on obscure URL formats (they get split as before) |
| Adaptive (three-path) wrapping | Non-URL lines are untouched — no
behavior change, no perf cost; mixed lines wrap prose naturally while
preserving URLs | Three wrapping strategies to reason about when
debugging layout |
| Row-based truncation with line-unit ellipsis | Accurate viewport
budget; stable "N lines omitted" count across terminal widths |
`truncate_lines_middle` is more complex (must compute per-line row cost)
|
| Unwrapped URL-only lines in scrollback | Terminal emulators detect
clickable links; copy-paste gets the full URL | TUI and scrollback
formatting diverge for URL-only lines |
| Default `desired_height` via `Paragraph::line_count` | DRY — most
cells inherit correct measurement | Cells with custom layout must
remember to override |
## Architecture
```mermaid
flowchart TD
A["adaptive_wrap_*()"] --> B{"line_contains_url_like?"}
B -- No URL tokens --> C["word_wrap_line<br/>(textwrap default)"]
B -- Has URL tokens --> D{"mixed URL + prose?"}
D -- "URL-only<br/>(+ decorative markers)" --> E["emit unwrapped<br/>(terminal char-wraps)"]
D -- "Mixed<br/>(URL + substantive text)" --> F["adaptive_wrap_line<br/>(AsciiSpace + custom WordSplitter)"]
C --> G["Paragraph::line_count(w)<br/>(single height truth)"]
E --> G
F --> G
```
**Changed files:**
| File | Role |
|------|------|
| `wrapping.rs` | URL detection heuristics, mixed-line detection,
`adaptive_wrap_*` functions, custom `WordSplitter` |
| `exec_cell/render.rs` | Row-aware `truncate_lines_middle`, adaptive
wrapping for command/output display |
| `history_cell.rs` | Migrate all cell types to `adaptive_wrap_*`;
default `desired_height` via `Paragraph::line_count` |
| `insert_history.rs` | Three-path scrollback wrapping (unwrapped
URL-only, adaptive mixed, word-wrapped text); continuation row clearing
|
| `app_link_view.rs` | Adaptive wrapping for setup URL; `desired_height`
via `Paragraph::line_count` |
| `markdown_render.rs` | Adaptive wrapping in `finish_paragraph` |
| `model_migration.rs` | Viewport-aware wrapping for narrow-pane
markdown |
| `pager_overlay.rs` | `Wrap { trim: false }` for transcript and
streaming chunks |
| `queued_user_messages.rs` | Migrate to `adaptive_wrap_lines` |
| `status/card.rs` | Migrate to `adaptive_wrap_lines` |
## Observability
- **Ellipsis message** in truncated exec output reports omitted count in
logical lines (stable across resize) rather than viewport rows
(fluctuates).
- URL detection is deterministic and stateless — no hidden caching or
memoization to go stale.
- Height mismatch bugs surface immediately as visual clipping or gaps;
the `Paragraph::line_count` path is the same code ratatui uses at render
time, so measurement and rendering cannot diverge.
## Tests
26 new unit tests across 7 files, covering:
- **URL integrity**: assert a URL-like token appears on exactly one
rendered line (not split across two).
- **Height accuracy**: compare `desired_height()` against
`Paragraph::line_count()` for URL-containing content.
- **Row-aware truncation**: verify ellipsis counts logical lines and
output fits within the row budget.
- **Scrollback rendering**: VT100 backend tests confirm prefix and URL
land on the same row; continuation rows are cleared; mixed URL+prose
lines wrap prose while preserving URL tokens.
- **Mixed URL+prose detection**: `line_has_mixed_url_and_non_url_tokens`
correctly distinguishes lines with substantive non-URL text from lines
with only decorative markers alongside a URL.
- **Heuristic correctness**: positive matches (`https://...`,
`example.com/path`, `localhost:3000/api`, `192.168.1.1:8080/health`) and
negative matches (`src/main.rs`, `foo/bar`, `hello-world`).
## Risks and open items
1. **URL-like tokens in code output** (e.g. `example.com/api` inside a
JSON blob) will trigger URL-preserving wrap on that line. This is
acceptable — the worst case is a slightly wider line, not broken output.
2. **Very long non-URL tokens on a URL line** can only break at
character boundaries (the custom splitter emits all char indices for
non-URL words). On extremely narrow terminals this could overflow, but
narrow terminals already degrade gracefully.
3. **No IPv6 support** — `[::1]:8080/path` will be treated as a non-URL
and may get split. Can be added later without API changes.
Fixes#5457
Fixes#11852
Resume replay was applying transient runtime events (`TurnStarted`,
`StreamError`) as if they were live, which could leave the TUI stuck in
a stale `Working` / `Reconnecting...` state after resuming an
interrupted reconnect.
This change makes replay transcript-oriented for these events by:
- skipping retry-status restoration for replayed non-stream events
- ignoring replayed `TurnStarted` for task-running state
- ignoring replayed `StreamError` for reconnect/status UI
Also adds TUI regression tests and snapshot coverage for the interrupted
reconnect replay case.
## Why
`codex-rs/core/src/lib.rs` re-exported a broad set of types and modules
from `codex-protocol` and `codex-shell-command`. That made it easy for
workspace crates to import those APIs through `codex-core`, which in
turn hides dependency edges and makes it harder to reduce compile-time
coupling over time.
This change removes those public re-exports so call sites must import
from the source crates directly. Even when a crate still depends on
`codex-core` today, this makes dependency boundaries explicit and
unblocks future work to drop `codex-core` dependencies where possible.
## What Changed
- Removed public re-exports from `codex-rs/core/src/lib.rs` for:
- `codex_protocol::protocol` and related protocol/model types (including
`InitialHistory`)
- `codex_protocol::config_types` (`protocol_config_types`)
- `codex_shell_command::{bash, is_dangerous_command, is_safe_command,
parse_command, powershell}`
- Migrated workspace Rust call sites to import directly from:
- `codex_protocol::protocol`
- `codex_protocol::config_types`
- `codex_protocol::models`
- `codex_shell_command`
- Added explicit `Cargo.toml` dependencies (`codex-protocol` /
`codex-shell-command`) in crates that now import those crates directly.
- Kept `codex-core` internal modules compiling by using `pub(crate)`
aliases in `core/src/lib.rs` (internal-only, not part of the public
API).
- Updated the two utility crates that can already drop a `codex-core`
dependency edge entirely:
- `codex-utils-approval-presets`
- `codex-utils-cli`
## Verification
- `cargo test -p codex-utils-approval-presets`
- `cargo test -p codex-utils-cli`
- `cargo check --workspace --all-targets`
- `just clippy`
Addresses https://github.com/openai/codex/issues/11013
## Summary
- add a Plan implementation path in the TUI that lets users choose
reasoning before switching to Default mode and implementing
- add Plan-mode reasoning scope handling (Plan-only override vs
all-modes default), including config/schema/docs plumbing for
`plan_mode_reasoning_effort`
- remove the hardcoded Plan preset medium default and make the reasoning
popup reflect the active Plan override as `(current)`
- split the collaboration-mode switch notification UI hint into #12307
to keep this diff focused
If I have `plan_mode_reasoning_effort = "medium"` set in my
`config.toml`:
<img width="699" height="127" alt="Screenshot 2026-02-20 at 6 59 37 PM"
src="https://github.com/user-attachments/assets/b33abf04-6b7a-49ed-b2e9-d24b99795369"
/>
If I don't have `plan_mode_reasoning_effort` set in my `config.toml`:
<img width="704" height="129" alt="Screenshot 2026-02-20 at 7 01 51 PM"
src="https://github.com/user-attachments/assets/88a086d4-d2f1-49c7-8be4-f6f0c0fa1b8d"
/>
## Codex author
`codex resume 019c78a2-726b-7fe3-adac-3fa4523dcc2a`
