Eric Traut 9fcb1f5ed4 Support line breaks in Mermaid flowchart node labels (#54419) ...

## 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

2026-10-15 21:29:41 +00:00

..

snapshots

Support line breaks in Mermaid flowchart node labels (#54419)

2026-10-15 21:29:41 +00:00

draw.rs

Support line breaks in Mermaid flowchart node labels (#54419)

2026-10-15 21:29:41 +00:00

families_tests.rs

Expand native Mermaid flowchart syntax support (#48895)

2026-09-28 06:30:53 +00:00

lib.rs

Preserve punctuation and semicolons in Mermaid labels (#48814)

2026-09-27 23:41:04 +00:00

output.rs

Add a bounded Mermaid text renderer (#45817)

2026-09-16 00:38:34 +00:00

parse.rs

Support line breaks in Mermaid flowchart node labels (#54419)

2026-10-15 21:29:41 +00:00

relations.rs

Preserve punctuation and semicolons in Mermaid labels (#48814)

2026-09-27 23:41:04 +00:00

sequence.rs

Add a bounded Mermaid text renderer (#45817)

2026-09-16 00:38:34 +00:00

state.rs

Fix Mermaid shape, relationship, and state description parsing (#48489)

2026-09-26 17:26:07 +00:00

syntax.rs

Preserve punctuation and semicolons in Mermaid labels (#48814)

2026-09-27 23:41:04 +00:00

tests.rs

Support line breaks in Mermaid flowchart node labels (#54419)

2026-10-15 21:29:41 +00:00