## 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
## 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
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
## 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.
Eric Traut