## Why
Flowcharts with `<br>` tags in node labels previously fell back to source instead of rendering as terminal diagrams.
## What changed
Render `<br>`, `<br/>`, and `<br />` as line breaks in quoted and unquoted flowchart node labels. Apply the 40-display-cell label limit per line and keep the decision marker on the first line. Continue rejecting other HTML, break tags in edge labels, and labels containing only breaks or whitespace.
## Testing
Extend rendering snapshots across all four flowchart directions and cover per-line width limits and unsupported markup. Update TUI streaming tests to cover multiline rendering, resizing, source fallback, and preservation of the original source for copying.
GitOrigin-RevId: 61f2a84c8bb161ac4a1c26ddaa0569f52bfea749
## Why
Syntax theme colors can have insufficient contrast against the terminal background or the shaded proposed-plan surface.
## What changed
- Adapt themed Markdown foreground colors to the terminal background while preserving inline code colors from the syntax theme.
- Adjust proposed-plan foreground colors after applying the plan background, including retained styles used for reflow. Apply the same styling to streamed and completed plans.
## Testing
Expand snapshots across syntax themes and light and dark backgrounds, and cover proposed-plan tables and streamed plans with wrapped hyperlinks. Update streaming assertions to expect contrast-adjusted blockquote colors.
GitOrigin-RevId: 0e358412562c438af17be5bcded9d058b56212b7
## What changed
Use the active syntax theme's markup foregrounds for headings, emphasis, strong text, list markers, links, and blockquotes. Preserve existing bold, italic, and underline modifiers, and retain previous styles when a scope provides no foreground.
## Testing
Update rendering snapshots and streaming blockquote assertions for themed colors. Exercise existing fallback expectations with an empty syntax theme.
GitOrigin-RevId: b00aa4af30f73f538ff5f888a0f9b4edbdc15893
## Why
Table holdback kept completed tables and subsequent content mutable until the response finished. Releasing completed tables earlier also requires a final scrollback reflow when late reference-link definitions change previously emitted content.
## What changed
- Release table holdback once the containing top-level Markdown block is stable, rescanning the remaining tail for later tables.
- Track completed-block boundaries across incremental and full renders.
- Request scrollback reflow at answer completion when reference-link definitions are present, including definitions pending without a trailing newline.
## Testing
Add regression assertions and snapshots for completed tables entering scrollback while later tables remain mutable, and for late reference-link definitions resolving correctly at completion. Cover reflow requests with and without a trailing newline and reference handling with inline visualizations enabled.
GitOrigin-RevId: a6b2aac74496281495b53840bbb1daf06bef60d2
## Why
Follow-up directives contain display labels and prompt attributes. Show the labels without exposing directive syntax or prompt text in rendered responses and streaming previews.
## What changed
- Render `:codex-followup[label]{prompt="..."}` as its label, preserving inline Markdown styling and source offsets.
- Replace recognized follow-up directives with their labels when copying whole responses, while retaining the original source.
- Withhold unfinished directives in rich streaming previews and avoid cropping into prompt attributes when the preview window advances.
- Preserve literal code, escaped directives, and malformed source when rendering completed messages or copying responses.
## Testing
Add regression coverage for label formatting, nested brackets and backticks, literal and malformed directives, whole-response copying, and streaming holdback across long prompts and preview window boundaries.
GitOrigin-RevId: dce61d1164de0a576fe95fb2c67b177a1ed414e8
## What changed
Render ordered list markers in the TUI with the terminal's `LightBlue` color instead of `accent_color()`.
## Testing
Add a snapshot covering ordered list markers alongside links and inline code. Update rendering expectations and nested-list streaming tests to assert `LightBlue`, including the incremental rendering snapshot.
GitOrigin-RevId: dea0081737a5bbe8652c761582fb82b20964431a
## Why
Empty list items can lose their markers, and a bare marker received during streaming can still acquire content in a later chunk.
## What changed
- Render pending markers when an empty item ends or a nested list starts on a new line, including inside blockquotes.
- Keep trailing bare list markers mutable during streaming so later content and terminal resizing preserve the item correctly.
## Testing
Add snapshot coverage for empty ordered, nested, and blockquoted list items, plus regression tests for streamed continuations, finalization, and resizing with a held marker.
GitOrigin-RevId: d9116bddc49670ad66d71dbddc66b2ab347cb6b7
## Why
Transcript selections were copied as plain text, losing the formatting of rendered Markdown when pasted.
## What changed
- Retain semantic Markdown annotations through rendering, wrapping, and streaming, then serialize selected text with balanced markup.
- Preserve inline formatting, web links, headings, lists, blockquotes, and hard breaks in Markdown clipboard payloads.
- Keep code-only and other literal-only selections as plain text. In mixed selections, escape user prose and fence code, tables, and tool output to preserve their literal content.
## Testing
Add unit tests and Markdown/HTML snapshots covering partial selections, nested containers, escaping, links, resize stability, and streaming boundaries.
GitOrigin-RevId: f0476334a6bf8ad0fb57626627bd258443540852
## Why
An unfinished Markdown link can display its destination across multiple preview rows, then collapse when the closing parenthesis arrives.
## What changed
Keep the link label visible while withholding the opening parenthesis and destination until the link closes. Scan incoming text incrementally, accounting for nested parentheses, escapes, angle-bracket destinations, titles, and inline code. Apply this holdback only to rich prose previews; newline commitment and finalization still render the original source.
## Testing
Add regression tests for character-by-character input, long Unicode destinations, resizing, raw-mode switching, and flushing unfinished links on newline or completion, plus a snapshot of the label-only preview.
GitOrigin-RevId: 9cea680a93dfcd0aea21f0fc12006b27400d4dab
## Why
Mermaid diagrams that cannot be rendered currently fall back to source without
explaining why the preview is unavailable.
## What changed
Show a dimmed notice above the preserved source when a completed Mermaid block
uses unsupported syntax, exceeds renderer size limits, or does not fit the
terminal width. Wrap the notice to the available width and preserve indentation
inside lists and blockquotes. Leave unfinished fences and disabled Mermaid
rendering without notices.
## Testing
Add coverage for fallback reasons, dimmed styling, source preservation, nested
indentation, and suppression of notices for unfinished fences and disabled
rendering. Update the streaming resize snapshot to include the width notice.
GitOrigin-RevId: 6ac7914b398c855e7aed3775ee0de70fb4484b78
## What changed
Render unordered bullets as `•` and task markers as `☐` or `☑`, preserving ordered numbering and continuation indentation in streaming and completed Markdown. Add `tui.rendering.lists`, enabled by default; setting it to `false` retains hyphen bullets and textual task markers.
## Testing
Add snapshot coverage for nested, ordered, quoted, and wrapped task lists, plus code and escaped markers. Add character-by-character streaming tests that compare incremental and emitted output with full rendering, with list rendering enabled and disabled.
GitOrigin-RevId: df9209d8c42f277dd2a2d7073ea19a6feb7dd706
## Why
Aligned equations and common optimization notation previously fell back to TeX source. Scripts without Unicode equivalents also prevented otherwise supported expressions from rendering.
## What changed
- Add display layouts for `aligned` and `\boxed`, preserving fraction geometry and alignment with surrounding math.
- Stack sum limits and `\underset`/`\overset` annotations in display math, with compact forms for inline math and nested arguments.
- Support `\substack`, uppercase `\mathcal`, and single-grapheme `\widehat`.
- Preserve scripts without Unicode equivalents using explicit grouping, such as `x_{gpt}` and `x^{q+1}`.
- Keep layouts bounded and retain source fallback for unsupported input or expressions that do not fit.
## Testing
Add snapshots and regression tests for optimization models, display limits, grouped scripts, fraction alignment, narrow-width fallback, malformed input, and layout bounds. Add streaming coverage comparing character-by-character output with complete rendering at wide and narrow widths in rich and raw modes.
GitOrigin-RevId: 83937880a309375f472228368ebe885d4f50bf9c
## What changed
Add `tui.rendering.mermaid`, `tui.rendering.math`, and `tui.rendering.tables`, all enabled by default and independent of animation settings. Disable individual renderers to display their source instead of diagrams, Unicode math, or formatted tables.
Apply preferences to streaming and completed responses, startup previews, and session changes. When table rendering is disabled, preserve pipe syntax, cell markup, and enclosing Markdown fences. Keep HTML clipboard formatting independent of terminal rendering preferences.
## Testing
Add coverage for individual defaults, source preservation, nested table fences, session settings, and clipboard behavior. Verify incremental rendering and emitted output match completed rendering across all eight toggle combinations.
GitOrigin-RevId: 48d765eac20a82881eed94f186bf5b025ff4f0db
## Why
Adding blank lines only after multiline items gives lists uneven spacing. Completed lists in redrawable transcript views can use consistent spacing based on their rendered width.
## What changed
- Keep assistant and plan lists compact while streaming in the fullscreen transcript, without holding back completed list rows.
- On completion or interruption, separate all sibling items if any item spans multiple rows; keep single-line lists compact and recompute spacing on resize.
- Preserve the reader's displayed content when consolidating streamed cells, and include spacing policy in the Markdown render cache key.
- Retain existing list spacing for native terminal scrollback.
## Testing
Add regression and snapshot coverage for streaming completion and interruption, width-dependent reflow, reader position, nested and quoted lists, item paragraphs, and preservation of links and source metadata.
GitOrigin-RevId: b2230aaf76ae798ebb6bf15563f8b8dcb6f3d19d
## Why
Display wrapping removes whitespace and adds gutters, so rendered rows alone cannot reliably describe the original logical text. Streaming previews also need to detect source changes that leave visible rows unchanged.
## What changed
- Retain shared logical text, styles, exact byte ranges, and display margins alongside wrapped rows; remap hyperlinks using those ranges.
- Preserve source metadata through prompt, Markdown, and prefixed history rendering, including spoken artifact annotations. Clear it when split-flap animation replaces the text.
- Include source metadata when comparing streaming previews and agent or plan tails.
- Keep compound graphemes intact, preserve explicit span styles, and reuse first-fit wrapping results when safe.
- Use the lighter history prompt background for submitted messages.
## Testing
Add regression coverage for source ranges and styles across widths and gutters, distinct repeated lines, source-only streaming updates, compound graphemes, and equivalence between reused and generic wrapping results. Extend Markdown, spoken artifact, and animation tests to check retained source metadata.
GitOrigin-RevId: 9e60746642fc9a8f91c1abfe7c77eefc1fe421ab
## Why
Theme colors and dimmed text can lose contrast against terminal and shaded backgrounds. Pickers also need to keep controls and the selected result visible when space is limited.
## What changed
- Add shared blue accents and contrast-aware foregrounds that account for painted backgrounds and terminal color depth, with terminal-default fallbacks for limited palettes.
- Apply readable colors to footer text, status lines, prompt attachment labels, and diff content. Remove dimming from syntax-highlighted diff text so it does not undo contrast correction.
- Use compact shortcut labels such as `ctrl+c`, emphasize complete key combinations, and separate composer footer actions with ` · `.
- Add an opt-in picker presentation with full-width selection, filled tabs, separate overflow indicators, and navigation based on visible rows. Enable it for `/keymap`, reserving result space to keep controls stable across filtering and tab changes.
## Testing
Add regression tests and snapshots for contrast after palette conversion, shaded diff backgrounds, shortcut typography, picker resizing and pagination, Unicode tab truncation, and stable `/keymap` geometry.
GitOrigin-RevId: f3c71879d3bcc4e3b29d70e63cf377dea5914916
## Why
Inline code and local file paths in the TUI used a fixed cyan foreground regardless of the active syntax theme.
## What changed
Use the active theme's Markdown raw-text foreground for inline code and local file paths, with cyan as the fallback when no matching color is available. Isolate the active theme and its revision per test thread to prevent parallel tests from affecting each other's rendering.
## Testing
Add rendering snapshots for dark, light, ANSI, and fallback themes, plus a regression test for theme and revision isolation between test threads.
GitOrigin-RevId: 40d84131d0abc9f177019d9b0b3e19536d5cd553
## What changed
- Render completed `mermaid` fences with `codex-mermaid`, using syntax-theme colors for nodes and edges.
- Keep source visible for unclosed, invalid, unsupported, or oversized diagrams, and preserve the original Mermaid for copying and raw mode.
- Keep streamed diagrams mutable until the next top-level block so closing fences and terminal resizing can update their display. Preserve scrollback progress across width and render-mode changes.
## Testing
Add renderer and streaming tests covering supported diagram families, nested fences, Unicode, theme colors, source fallbacks, resizing, raw-mode transitions, and original-source preservation. Verify that node connection ports retain node styling in all four flowchart directions.
GitOrigin-RevId: 9a759248110e6730d629d653061ff7e2ec5dc2c0
## Why
The TUI renders supported inline math as Unicode but leaves display equations to ordinary Markdown rendering. Display fractions need spatial layout, and streamed equations must remain mutable while their closing delimiter is pending.
## What changed
- Render supported standalone `$$...$$` and `\[...\]` equations as Unicode, with stacked fractions and aligned baselines.
- Fall back to source for unsupported expressions, nested fractions, and spatial layouts that exceed the available width or occur inside lists or block quotes.
- Preview unfinished display math as wrapped source and hold it out of scrollback within the conversion budget, then render it when closed.
- Preserve display delimiter boundaries across incremental rendering and bound lookahead for rejected openers so shell `echo $$` does not retain the entire response.
## Testing
Add snapshots and regression tests for display layouts, narrow widths, literal fallback, streaming closure, resize reflow, raw source preservation, shell dollars, and bounded incremental rendering.
GitOrigin-RevId: ab54675f2e27a243f5d7165c76d9d7355f9fabd1
## What changed
Convert supported expressions inside `$...$` and `\(...\)` to readable Unicode in regular and streaming Markdown. For example, `$\alpha^2 + \beta_{10}$` renders as `α² + β₁₀`. Support a bounded TeX subset including symbols, superscripts, subscripts, square roots, and parenthesized fractions, with verbatim fallback for unsupported expressions.
Exclude code, links, HTML, and display equations from conversion, and avoid interpreting common currency and shell syntax as math. Preserve file citation paths and keep streaming cache boundaries outside display equations.
## Testing
Add snapshots for inline rendering and narrow wrapping, plus regression tests for unsupported input, parser limits, Markdown contexts, file citations, and streaming display boundaries across chunks and widths.
GitOrigin-RevId: 828bf7b48345b05bc6c2fb5cb2798412c3b71dbe
## Why
Unterminated prose stayed hidden until a newline arrived or the stream completed, leaving long single-line responses invisible while they streamed.
## What changed
- Show live prose previews for agent messages and proposed plans, requesting redraws when the preview changes.
- Keep previews out of the scrollback queue and render the full source on newline or completion without duplicating text.
- Bound previews to the most recent 8 KiB at a Unicode character boundary, with an ellipsis for omitted text, and reflow them when the width changes.
- Preserve holdback for incomplete table and code structures, retaining the last safe prose preview when a pipe arrives.
## Testing
Add controller tests and TUI snapshots covering visibility before completion, resize reflow, finalization without duplication, long Unicode previews, table and code holdback, and inline visualization context.
GitOrigin-RevId: 26c83c218b986625820b20779a46d1b800a7e0ff
## What changed
- Convert `codex-file-citation` directives in assistant Markdown into local-file links while preserving paths with Markdown-significant characters, Unicode, Windows separators, and location suffixes.
- Apply citation rendering consistently to streaming output, finalized messages and plans, and resume-picker transcript previews.
- Keep directives literal in code, HTML, existing links, reference definitions, escaped text, and generic Markdown rendering.
- Bound repeated parsing work for malformed directive candidates without limiting valid citations.
## Testing
- Add coverage for citation parsing and rendering across finalized, streaming, and resume-preview output, including malformed input and path edge cases.
GitOrigin-RevId: 5a0bfb3fc7ac21b7e8846fd170a349fb2d2d5e85
## What changed
- Render web-link labels in cyan with an underline and hide the repeated destination in recognized terminals with hyperlink support.
- Keep destinations visible for unknown terminals, multiplexers, non-terminal output, and empty labels so the URL remains usable.
- Preserve OSC 8 link targets through prose and table wrapping, streaming updates, transcript clipping, and pager scrolling.
## Testing
- Add coverage for terminal detection, label formatting and fallbacks, wrapped tables and prose, streaming parity, history output, and scrolled transcript rendering.
GitOrigin-RevId: 4a09e41e349ba299022a9c00f0c25892d9aaefe3
## Why
The streaming TUI rerendered the entire mutable Markdown block whenever a
newline-bearing delta arrived. For long fenced code blocks, this repeatedly
parsed and syntax-highlighted the growing fence.
## What changed
- Detect open, top-level, language-tagged code fences and append newly
completed lines directly to the existing render.
- Preserve Syntect parser state across appended lines so multiline syntax and
the active theme remain consistent.
- Fall back to the canonical Markdown renderer for ambiguous fence syntax,
theme changes, incomplete lines, and highlighting limit transitions.
## Testing
Added coverage that compares streamed output with full renders across syntax
styles, Unicode, links, blank lines, fence variants, theme changes, and
highlighting limits. A long-fence test also verifies that the rendered prefix
is retained as new lines arrive.
GitOrigin-RevId: 036db2b7bc93607083b8001f8b4fa3cbb58c713e
## What changed
- Recognize structured `visualize` content references alongside the existing inline visualization directive in cached, streaming, and finalized TUI rendering.
- Resolve absolute visualization paths only when they belong to the active thread directory, and show the existing unavailable fallback for incomplete, invalid, or out-of-scope references.
- Let embedded visualizations inherit host color, typography, and radius tokens while retaining standalone defaults and legacy aliases. Keep Lucide icons at a stable size when model-authored chart styles are present.
## Testing
- Cover content-reference fallback, replay, render-cache bypass, and canonical streaming behavior.
GitOrigin-RevId: 887d13647df11c23d519e64d0958fdc41ef3f472
## What changed
- Record when committed streaming content contains an inline visualization directive and keep using the canonical full-source renderer afterward.
- Restore directive state during full recomputes and clear it when the streaming renderer is reset.
- Cover directive tracking with and without visualization context, including a raw-to-rich render mode switch.
GitOrigin-RevId: 17786851d6dad6805240b79072fcbd0bb441874a
## Why
Providing an inline visualization context forced every streamed Markdown update
to rerender the full response, even when the source contained no visualization
directives.
## What changed
- Preserve the stable rendered prefix when visualization context is available
but no directive is present.
- Continue using canonical full rendering when the source contains a
visualization directive.
## Testing
Added a regression test that verifies directive-free streams match full
rendering while advancing the stable source boundary.
GitOrigin-RevId: cd70d2ba052db822d474eba8619d04cedf4c0573
## What changed
- Return committed byte ranges from `MarkdownStreamCollector` so the streaming controller can render and scan the collector's source directly.
- Transfer the complete source out of the collector during finalization, preserving the final unterminated line while removing the controller's duplicate source buffer.
- Cover finalization of an empty collector and update streaming tests to validate the collector-backed source.
GitOrigin-RevId: 0aca912c53080267a2d12ad397e548641171942a
## Why
Streaming TUI responses repeatedly rendered the entire accumulated Markdown source for each committed delta, including blocks whose output could no longer change.
## What changed
- Retain rendered output for completed top-level Markdown blocks and rerender only the final mutable block as new source arrives.
- Track block boundaries during the existing Markdown parser pass and map them through table-fence normalization.
- Preserve canonical full rendering when source-wide state may affect earlier output, including reference link definitions and inline visualizations, and when the width or render mode changes.
- Append raw-mode lines directly while preserving blank lines.
## Testing
Added coverage that compares incremental output with full rendering across paragraphs, headings, lists, block quotes, code fences, tables, HTML blocks, links, visualizations, render-mode changes, and normalized table fences.
GitOrigin-RevId: 748171c4ed58923329b59c48ea3c2afa4819ec88
## Why
Assistant-authored inline visualizations need a terminal fallback that lets users open generated artifacts in a browser.
## What changed
- Recognize `::codex-inline-vis{file="..."}` directives in assistant Markdown and replace them with browser links during streaming, finalized history rendering, and local transcript previews.
- Materialize visualization fragments in sandboxed viewer documents with a content security policy, while restricting artifacts to HTML files within the thread's visualization directory and limiting their size.
- Show an explicit unavailable message for invalid or missing artifacts, hide incomplete streaming directives, and preserve directive text in code blocks and user Markdown.
- Add a trusted file-link path for generated viewers without enabling arbitrary `file:` links in Markdown.
## Testing
Add coverage for directive rewriting, streaming and replay, artifact validation, sandboxed viewer generation, trusted terminal hyperlinks, and literal preservation.
GitOrigin-RevId: a666b4ebc82bb5798ad45bd137fd815d538e1de2
## Why
Wrapped URLs in rich TUI output, especially URLs rendered inside
Markdown tables, are split across terminal rows. In terminals that
support OSC 8 hyperlinks, treating each visible fragment as part of the
complete destination enables reliable open-link and copy-link actions
even after table layout wraps the URL.
This addresses the semantic-link portion of #12200 and the behavior
described in
https://github.com/openai/codex/issues/12200#issuecomment-4535452980. It
does not change ordinary drag-selection across bordered table rows.
## What Changed
- Added shared TUI OSC 8 support that validates `http://` and `https://`
destinations, sanitizes terminal payloads, and applies metadata
separately from visible line width/layout.
- Added semantic web-link annotations to assistant and proposed-plan
Markdown, including explicit web links and bare web URLs in prose and
table cells while excluding code and non-web Markdown destinations.
- Preserved complete URL targets through table wrapping, narrow pipe
fallback, streaming, transcript overlay rendering, history insertion,
and resize replay.
- Routed intentional Codex-owned links in notices,
status/setup/app-link, feedback, onboarding, MCP/plugin help, memories,
and update surfaces through the shared hyperlink handling.
## How to Test
1. Run Codex in a terminal with OSC 8 link support, such as Ghostty, and
request an assistant response containing a Markdown table whose last
column contains a long `https://` URL.
2. Make the terminal narrow enough for the URL to wrap across multiple
bordered table rows.
3. Use the terminal's open-link or copy-link action on more than one
wrapped URL fragment and confirm each fragment resolves to the complete
original URL.
4. Resize the terminal after the table is rendered and repeat the link
action to confirm the destination survives scrollback replay.
5. Open the transcript overlay while rich output is present and confirm
web links remain interactive there.
6. As a regression check, render inline/fenced code containing URL text
and a Markdown link such as
`[https://example.com](mailto:support@example.com)`; confirm these do
not acquire a web OSC 8 destination.
Targeted automated coverage exercised Markdown links and exclusions,
wrapped and pipe-fallback tables, streaming/transcript overlay
propagation, status-link truncation, and rendered word-wrapping cell
alignment. `just test -p codex-tui` was also run; it passed the
hyperlink coverage and reproduced two unrelated existing guardian
feature-flag test failures.
## Stack
- **Current: #24489 [1 of 2]** - render markdown tables in app style.
- **Stacked follow-up: #24636 [2 of 2]** - render cramped markdown
tables as key/value records.
## Why
Markdown tables currently render as boxed terminal grids, which gives
ordinary assistant output a heavier visual treatment than surrounding
rich text. This row-separated layout is the best match for how the App
renders tables, while accented headers remain distinguishable even when
a terminal font renders bold subtly.
<table>
<tr><td>
<p align="center">Codex CLI - Before</p>
<img width="1722" height="742" alt="CleanShot 2026-05-25 at 18 46 17"
src="https://github.com/user-attachments/assets/f673d92a-ebd8-46e2-b414-3d985e41b6a4"
/>
</td></tr>
<tr><td>
<p align="center">Codex CLI - After</p>
<img width="1720" height="957" alt="image"
src="https://github.com/user-attachments/assets/36a3d331-bea1-439b-b5be-e97b0731bd6f"
/>
</td></tr>
<tr><td>
<p align="center">Codex App</p>
<img width="979" height="1293" alt="CleanShot 2026-05-25 at 18 45 04"
src="https://github.com/user-attachments/assets/7d97cae0-9256-4f6e-a4b3-8b8f22b0d901"
/>
</td></tr>
</table>
## What Changed
- Render markdown tables as padded, aligned rows without an enclosing
box.
- Style table headers with the active syntax-theme accent plus bold
text, while keeping separators low contrast and theme-aware.
- Use a segmented heavy header rule and thin body-row rules, preserving
wrapping, narrow-width fallback, streaming parity, and rich-history
rendering.
- Update focused assertions and snapshots for the final table layout.
## How to Test
1. Render a markdown table in the TUI with several rows and columns.
2. Confirm the header uses the active theme accent, rows use
one-character interior padding, and the table has no enclosing box.
3. Confirm the header is followed by segmented `━` rules and multiple
body rows are separated by muted segmented `─` rules.
4. Render the same table while streaming and in history/raw-mode
toggles; the final rich layout should remain stable.
5. Render a narrow table with long content and verify wrapping or pipe
fallback does not overflow.
## Validation
- `just test -p codex-tui table`
- `just test -p codex-tui streaming::controller::tests`
- `just argument-comment-lint-from-source -p codex-tui -- --all-targets`
- `just fix -p codex-tui`
- `just fmt`
`just test -p codex-tui` was also run after accepting the snapshots; it
fails only in the unrelated existing guardian app tests
`update_feature_flags_disabling_guardian_clears_review_policy_and_restores_default`
and
`update_feature_flags_disabling_guardian_clears_manual_review_policy_without_history`.
## Why
Numbered Markdown findings become hard to scan when long items visually
run together or when wrapped explanatory paragraphs lose their list
indentation. This is especially visible in review output: the next
number can look attached to the previous finding, and paragraph
continuation rows can jump back toward the left margin instead of
staying grouped beneath their item.
<table><tr><td>
<center>Before</center>
<img width="1718" height="836" alt="CleanShot 2026-05-24 at 14 00 49"
src="https://github.com/user-attachments/assets/f1ee0023-50fa-4f81-a641-ae08b17b99bd"
/>
</td></tr>
<tr><td>
<center>After</center>
<img width="1714" height="906" alt="image"
src="https://github.com/user-attachments/assets/b123a5e0-a232-47bf-96d5-c935295f7c0a"
/>
</td></tr>
</table>
## What Changed
- Insert a blank separator before a sibling list item when the previous
item occupies more than one rendered line.
- Preserve compact rendering for lists whose sibling items each render
on one line.
- Preserve list-body leading whitespace when transient streamed
assistant rows require another wrapping pass for history display, so
wrapped paragraphs stay aligned beneath their item.
- Share the existing leading-whitespace prefix logic used by history
insertion instead of introducing a second indentation rule.
- Keep streamed Markdown output aligned with completed rendering and add
snapshots for findings-style spacing and streamed paragraph indentation.
## How to Test
1. Start Codex from this branch and open the recorded repro session
`019e563f-7d58-7ff2-8ec7-828f20fa61ca`.
2. Inspect the numbered `Findings` list whose items contain explanatory
paragraphs.
3. Confirm each multiline finding is separated from the next numbered
finding by one blank line.
4. Confirm wrapped rows of each indented paragraph remain aligned
beneath the finding body, rather than returning to the left edge.
5. Render a short one-line numbered or unordered list and confirm its
items remain compact without added blank rows.
Targeted tests:
- `just test -p codex-tui history_cell insert_history markdown_render
markdown_stream streaming::controller`
- `just argument-comment-lint-from-source -p codex-tui`
## Related Work
PR #24346 changes Markdown table column allocation in parallel. This PR
is intentionally limited to list-item readability and history wrapping;
both branches touch `codex-rs/tui/src/markdown_render.rs`, so a small
merge conflict may need resolution depending on merge order.
## Why
The TUI currently treats Markdown tables as ordinary wrapped text, which
makes table-heavy responses hard to read and brittle across narrow panes
and terminal resizes.
This change teaches the TUI to render Markdown tables responsively while
preserving the raw Markdown source needed to re-render streamed and
finalized transcript content after width changes. The goal is to keep
tables legible during streaming, after resize, and once a turn has
finished, without corrupting scrollback ordering.
## What Changed
- add table detection and responsive table rendering in the Markdown
renderer
- render standard tables with Unicode box-drawing borders when the pane
is wide enough
- add a vertical readability fallback for constrained or dense tables so
narrow panes still show each row clearly
- keep links and `<br>` content inside table cells instead of leaking
text outside the table
- avoid table normalization inside fenced or indented code blocks
- preserve raw streamed Markdown source and keep the active table as a
mutable tail until finalization
- consolidate finalized streamed content into source-backed transcript
cells so post-resize re-rendering stays correct
- add snapshot and targeted streaming/resize regression coverage for the
new table behavior
## How to Test
1. Start Codex TUI from this branch.
2. Paste this exact prompt:
`This is a session to test codex, no need to do any thinking, just end
different markdown tables, with columns exploring different markdown
contents, like links, bold italic, code, etc. Make them different sizes,
some 30+ rows, some not and intertwine them with some paragraphs with
complex formatting as well.`
3. Confirm the response includes several Markdown tables mixed with
richly formatted paragraphs.
4. Confirm wide-enough tables render with box-drawing borders instead of
plain wrapped pipe text.
5. Resize the terminal narrower while the answer is still streaming and
confirm the in-progress table stays coherent instead of duplicating
headers or leaving broken scrollback behind.
6. Resize again after the turn finishes and confirm the finalized
transcript re-renders cleanly at the new width.
7. In a narrow pane, verify dense tables fall back to the vertical
per-row layout instead of producing unreadable wrapped columns.
8. Also verify pipe-heavy fenced code blocks still render as code, not
as tables.
Targeted tests:
- `cargo test -p codex-tui table_readability_fallback --no-fail-fast`
- `cargo test -p codex-tui markdown_render --no-fail-fast`
- `cargo test -p codex-tui streaming::controller --no-fail-fast`
- `cargo test -p codex-tui table_resize_lifecycle --no-fail-fast`
## Docs
No developer docs update appears necessary.
## Why
Granular copy is particularly difficult with the current output. Part of
it was solved with the introduction of the `/copy` command but when you
only need to copy parts of a response, you still encounter some issues:
- When you copy a paragraph, the result is a sequence of separate lines
instead of one correctly joined paragraph.
- When a word wraps, part of it stays on the original line and the rest
appears at the start of the next line.
- When you copy a long command, extra line breaks are often inserted,
and command arguments can be split across multiple lines.
https://github.com/user-attachments/assets/0ef85c84-9363-4aad-b43a-15fce062a443
## Solution
Now that we own the scrollback and we re-create it when we resize, we
have the opportunity of toggling between the raw text and the rich text
we see today.
- Add TUI raw scrollback mode with `tui.raw_output_mode`, `/raw
[on|off]`, and the configurable `tui.keymap.global.toggle_raw_output`
action.
- Render transcript cells through rich/raw-aware paths so raw mode
preserves source text and lets the terminal soft-wrap selection-friendly
output.
- Bind raw-mode toggle to `alt-r` by default, with the keybinding path
toggling silently while `/raw` continues to emit confirmation messages.
## Related Issues
Likely addressed by raw mode:
- #12200: clean copy for multiline and soft-wrapped output. Raw mode
removes Codex-inserted wrapping/indentation and lets the terminal
soft-wrap logical lines.
- #9252: command suggestions gain unwanted leading spaces when copied.
Raw mode renders transcript text without the rich-mode left
padding/gutter.
- #8258: prompt output is hard to copy because of leading indentation.
Raw mode renders user/source-backed transcript text without that
decorative indentation.
Partially or conditionally addressed:
- #2880: copy/export message as Markdown. Raw mode exposes raw Markdown
for terminal selection, but this PR does not add a dedicated
export/copy-message command.
- #19820: mouse drag selection + copy in the TUI. Raw mode improves
terminal-native selection of output/history text, but this PR does not
implement in-TUI mouse selection, highlighting, auto-copy, or composer
selection.
- #18979: copied content is divided into two parts. This should improve
cases caused by Codex-inserted wraps/padding in rendered output; if the
report is about pasting into the composer/input path, that remains
outside this PR.
## Validation
- `just write-config-schema`
- `just fmt`
- `cargo test -p codex-config`
- `cargo test -p codex-tui`
- `just fix -p codex-tui`
- `just argument-comment-lint`
- `cargo test -p codex-tui
raw_output_mode_can_change_without_inserting_notice -- --nocapture`
- `cargo test -p codex-tui
raw_slash_command_toggles_and_accepts_on_off_args -- --nocapture`
- `cargo test -p codex-tui raw_output_toggle -- --nocapture`
- `git diff --check`
- `cargo insta pending-snapshots`
Fixes multiple scrollback and terminal resize issues: #5538, #5576,
#8352, #12223, #16165, and #15380.
## Why
Codex writes finalized transcript output into terminal scrollback after
wrapping it for the current viewport width. A later terminal resize
could leave that scrollback shaped for the old width, so wider windows
kept narrow output and narrower windows could show stale wrapping
artifacts until enough new output replaced the visible area.
This is also the foundation PR for responsive markdown tables. Table
rendering needs finalized transcript content to be width-sensitive after
insertion, not only while content is first streaming. Markdown table
rendering itself stays in #18576.
## Stack
- PR1: resize backlog reflow and interrupt cleanup
- #18576: markdown table support
## What Changed
- Rebuild source-backed transcript history when the terminal width
changes. `terminal_resize_reflow` is introduced through the experimental
feature system, but is enabled by default for this rollout so we can
validate behavior across real terminals.
- Preserve assistant and plan stream source so finalized streaming
output can participate in resize reflow after consolidation.
- Debounce resize work, but force a final source-backed reflow when a
resize happened during active or unconsolidated streaming output.
- Clear stale pending history lines on resize so old-width wrapped
output is not emitted just before rebuilt scrollback.
- Bound replay work with `[tui.terminal_resize_reflow].max_rows`:
omitted uses terminal-specific defaults, `0` keeps all rendered rows,
and a positive value sets an explicit cap. The cap applies both while
initially replaying a resumed transcript into scrollback and when
rebuilding scrollback after terminal resize.
- Consolidate interrupted assistant streams before cleanup, then clear
pending stream output and active-tail state consistently.
- Move resize reflow and thread event buffering helpers out of `app.rs`
into dedicated TUI modules.
- Add focused coverage for resize reflow, feature-gated behavior,
streaming source preservation, interrupted output cleanup,
unicode-neutral text, terminal-specific row caps, and composer/layout
stability.
## Runtime Bounds
Resize reflow keeps only the most recent rendered rows when a row cap is
active. The default is `auto`, which maps to the detected terminal's
default scrollback size where Codex can identify it: VS Code `1000`,
Windows Terminal `9001`, WezTerm `3500`, and Alacritty `10000`.
Terminals without a dedicated mapping use the conservative fallback of
`1000` rows. Users can override this with `[tui.terminal_resize_reflow]
max_rows = N`, or set `max_rows = 0` to disable row limiting.
## Validation
- `just fmt`
- `git diff --check`
- `cargo test --manifest-path codex-rs/Cargo.toml -p codex-tui reflow`
- `cargo test --manifest-path codex-rs/Cargo.toml -p codex-tui
transcript_reflow`
- `just fix -p codex-tui`
- PR CI in progress on the squashed branch
This is a follow-up to https://github.com/openai/codex/pull/15922. That
previous PR deleted the old `tui` directory and left the new
`tui_app_server` directory in place. This PR renames `tui_app_server` to
`tui` and fixes up all references.
This is the part 1 of 2 PRs that will delete the `tui` /
`tui_app_server` split. This part simply deletes the existing `tui`
directory and marks the `tui_app_server` feature flag as removed. I left
the `tui_app_server` feature flag in place for now so its presence
doesn't result in an error. It is simply ignored.
Part 2 will rename the `tui_app_server` directory `tui`. I did this as
two parts to reduce visible code churn.
## Why
Once the repo-local lint exists, `codex-rs` needs to follow the
checked-in convention and CI needs to keep it from drifting. This commit
applies the fallback `/*param*/` style consistently across existing
positional literal call sites without changing those APIs.
The longer-term preference is still to avoid APIs that require comments
by choosing clearer parameter types and call shapes. This PR is
intentionally the mechanical follow-through for the places where the
existing signatures stay in place.
After rebasing onto newer `main`, the rollout also had to cover newly
introduced `tui_app_server` call sites. That made it clear the first cut
of the CI job was too expensive for the common path: it was spending
almost as much time installing `cargo-dylint` and re-testing the lint
crate as a representative test job spends running product tests. The CI
update keeps the full workspace enforcement but trims that extra
overhead from ordinary `codex-rs` PRs.
## What changed
- keep a dedicated `argument_comment_lint` job in `rust-ci`
- mechanically annotate remaining opaque positional literals across
`codex-rs` with exact `/*param*/` comments, including the rebased
`tui_app_server` call sites that now fall under the lint
- keep the checked-in style aligned with the lint policy by using
`/*param*/` and leaving string and char literals uncommented
- cache `cargo-dylint`, `dylint-link`, and the relevant Cargo
registry/git metadata in the lint job
- split changed-path detection so the lint crate's own `cargo test` step
runs only when `tools/argument-comment-lint/*` or `rust-ci.yml` changes
- continue to run the repo wrapper over the `codex-rs` workspace, so
product-code enforcement is unchanged
Most of the code changes in this commit are intentionally mechanical
comment rewrites or insertions driven by the lint itself.
## Verification
- `./tools/argument-comment-lint/run.sh --workspace`
- `cargo test -p codex-tui-app-server -p codex-tui`
- parsed `.github/workflows/rust-ci.yml` locally with PyYAML
---
* -> #14652
* #14651
## Summary
- preserve baseline streaming behavior (smooth mode still commits one
line per 50ms tick)
- extract adaptive chunking policy and commit-tick orchestration from
ChatWidget into `streaming/chunking.rs` and `streaming/commit_tick.rs`
- add hysteresis-based catch-up behavior with bounded batch draining to
reduce queue lag without bursty single-frame jumps
- document policy behavior, tuning guidance, and debug flow in rustdoc +
docs
## Testing
- just fmt
- cargo test -p codex-tui
## Summary
- Stream proposed plans in Plan Mode using `<proposed_plan>` tags parsed
in core, emitting plan deltas plus a plan `ThreadItem`, while stripping
tags from normal assistant output.
- Persist plan items and rebuild them on resume so proposed plans show
in thread history.
- Wire plan items/deltas through app-server protocol v2 and render a
dedicated proposed-plan view in the TUI, including the “Implement this
plan?” prompt only when a plan item is present.
## Changes
### Core (`codex-rs/core`)
- Added a generic, line-based tag parser that buffers each line until it
can disprove a tag prefix; implements auto-close on `finish()` for
unterminated tags. `codex-rs/core/src/tagged_block_parser.rs`
- Refactored proposed plan parsing to wrap the generic parser.
`codex-rs/core/src/proposed_plan_parser.rs`
- In plan mode, stream assistant deltas as:
- **Normal text** → `AgentMessageContentDelta`
- **Plan text** → `PlanDelta` + `TurnItem::Plan` start/completion
(`codex-rs/core/src/codex.rs`)
- Final plan item content is derived from the completed assistant
message (authoritative), not necessarily the concatenated deltas.
- Strips `<proposed_plan>` blocks from assistant text in plan mode so
tags don’t appear in normal messages.
(`codex-rs/core/src/stream_events_utils.rs`)
- Persist `ItemCompleted` events only for plan items for rollout replay.
(`codex-rs/core/src/rollout/policy.rs`)
- Guard `update_plan` tool in Plan Mode with a clear error message.
(`codex-rs/core/src/tools/handlers/plan.rs`)
- Updated Plan Mode prompt to:
- keep `<proposed_plan>` out of non-final reasoning/preambles
- require exact tag formatting
- allow only one `<proposed_plan>` block per turn
(`codex-rs/core/templates/collaboration_mode/plan.md`)
### Protocol / App-server protocol
- Added `TurnItem::Plan` and `PlanDeltaEvent` to core protocol items.
(`codex-rs/protocol/src/items.rs`, `codex-rs/protocol/src/protocol.rs`)
- Added v2 `ThreadItem::Plan` and `PlanDeltaNotification` with
EXPERIMENTAL markers and note that deltas may not match the final plan
item. (`codex-rs/app-server-protocol/src/protocol/v2.rs`)
- Added plan delta route in app-server protocol common mapping.
(`codex-rs/app-server-protocol/src/protocol/common.rs`)
- Rebuild plan items from persisted `ItemCompleted` events on resume.
(`codex-rs/app-server-protocol/src/protocol/thread_history.rs`)
### App-server
- Forward plan deltas to v2 clients and map core plan items to v2 plan
items. (`codex-rs/app-server/src/bespoke_event_handling.rs`,
`codex-rs/app-server/src/codex_message_processor.rs`)
- Added v2 plan item tests.
(`codex-rs/app-server/tests/suite/v2/plan_item.rs`)
### TUI
- Added a dedicated proposed plan history cell with special background
and padding, and moved “• Proposed Plan” outside the highlighted block.
(`codex-rs/tui/src/history_cell.rs`, `codex-rs/tui/src/style.rs`)
- Only show “Implement this plan?” when a plan item exists.
(`codex-rs/tui/src/chatwidget.rs`,
`codex-rs/tui/src/chatwidget/tests.rs`)
<img width="831" height="847" alt="Screenshot 2026-01-29 at 7 06 24 PM"
src="https://github.com/user-attachments/assets/69794c8c-f96b-4d36-92ef-c1f5c3a8f286"
/>
### Docs / Misc
- Updated protocol docs to mention plan deltas.
(`codex-rs/docs/protocol_v1.md`)
- Minor plumbing updates in exec/debug clients to tolerate plan deltas.
(`codex-rs/debug-client/src/reader.rs`, `codex-rs/exec/...`)
## Tests
- Added core integration tests:
- Plan mode strips plan from agent messages.
- Missing `</proposed_plan>` closes at end-of-message.
(`codex-rs/core/tests/suite/items.rs`)
- Added unit tests for generic tag parser (prefix buffering, non-tag
lines, auto-close). (`codex-rs/core/src/tagged_block_parser.rs`)
- Existing app-server plan item tests in v2.
(`codex-rs/app-server/tests/suite/v2/plan_item.rs`)
## Notes / Behavior
- Plan output no longer appears in standard assistant text in Plan Mode;
it streams via `PlanDelta` and completes as a `TurnItem::Plan`.
- The final plan item content is authoritative and may diverge from
streamed deltas (documented as experimental).
- Reasoning summaries are not filtered; prompt instructs the model not
to include `<proposed_plan>` outside the final plan message.
## Codex Author
`codex fork 019bec2d-b09d-7450-b292-d7bcdddcdbfb`
We don't instruct the model to use citations, so it never emits them.
Further, ratatui [doesn't currently support rendering links into the
terminal with OSC 8](https://github.com/ratatui/ratatui/issues/1028), so
even if we did parse citations, we can't correctly render them.
So, remove all the code related to rendering them.
## Summary
- Factor `load_config_as_toml` into `core::config_loader` so config
loading is reusable across callers.
- Layer `~/.codex/config.toml`, optional `~/.codex/managed_config.toml`,
and macOS managed preferences (base64) with recursive table merging and
scoped threads per source.
## Config Flow
```
Managed prefs (macOS profile: com.openai.codex/config_toml_base64)
▲
│
~/.codex/managed_config.toml │ (optional file-based override)
▲
│
~/.codex/config.toml (user-defined settings)
```
- The loader searches under the resolved `CODEX_HOME` directory
(defaults to `~/.codex`).
- Managed configs let administrators ship fleet-wide overrides via
device profiles which is useful for enforcing certain settings like
sandbox or approval defaults.
- For nested hash tables: overlays merge recursively. Child tables are
merged key-by-key, while scalar or array values replace the prior layer
entirely. This lets admins add or tweak individual fields without
clobbering unrelated user settings.
This eliminates a "bounce" at the end of streaming where we hide the
status indicator at the end of the turn and the composer moves up two
lines.
Also, simplify streaming further by removing the HistorySink and
inverting control, and collapsing a few single-element structures.
Also, simplify the streaming behavior.
This fixes a number of display issues with streaming markdown, and paves
the way for better markdown features (e.g. customizable styles, syntax
highlighting, markdown-aware wrapping).
Not currently supported:
- footnotes
- tables
- reference-style links
Eric Traut