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Swift-Markdown-engine

v0.6.0 Breaking

This release includes 1 breaking change for platform teams planning a safe upgrade.

Published 1mo Editors & IDEs
✓ No known CVEs patched
Read the diff → Tool health → What is this tool? →

✓ No known CVEs patched in this version

ReleasePort's take

Light signal
editorial:auto 1mo

The Markdown engine has been replaced with a full AST pipeline for better structure handling.

Why it matters: Switching to an AST‑based parser improves rendering accuracy and enables future extensibility; developers should review markdown‑related code paths after upgrading to version 0.6.0.

Summary

AI summary

Updates Main changes, document, and edit across a mixed release.

Changes in this release

Feature Low

Introduces two-phase AST parse: BlockParser and InlineParser create DocumentAST.

Introduces two-phase AST parse: BlockParser and InlineParser create DocumentAST.

Source: granite4.1:30b@2026-06-04-audit

Confidence: low

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Feature Low

Adds tables and block LaTeX as first-class AST blocks with a dedicated cell scanner.

Adds tables and block LaTeX as first-class AST blocks with a dedicated cell scanner.

Source: granite4.1:30b@2026-06-04-audit

Confidence: low

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Performance Medium

Incremental parsing and tokenization reduce edit cost to O(edit).

Incremental parsing and tokenization reduce edit cost to O(edit).

Source: llm_adapter@2026-06-04

Confidence: high

 —
Bugfix Low

Fixes heading marker spacing, nested-marker reveal, task‑checkbox glyph issues.

Fixes heading marker spacing, nested-marker reveal, task‑checkbox glyph issues.

Source: llm_adapter@2026-06-04

Confidence: high

 —
Bugfix Low

Fixes trailing‑image scroll and measurement problems.

Fixes trailing‑image scroll and measurement problems.

Source: llm_adapter@2026-06-04

Confidence: high

 —
Bugfix Low

Fixes file‑switch scroll oscillation and incomplete code fence visibility while typing.

Fixes file‑switch scroll oscillation and incomplete code fence visibility while typing.

Source: llm_adapter@2026-06-04

Confidence: low

 —
Bugfix Low

Corrects task‑checkbox glyph display.

Corrects task‑checkbox glyph display.

Source: granite4.1:30b@2026-06-04-audit

Confidence: low

 —
Bugfix Low

Resolves file‑switch scroll oscillation problem.

Resolves file‑switch scroll oscillation problem.

Source: granite4.1:30b@2026-06-04-audit

Confidence: low

 —
Bugfix Low

Prevents incomplete code fences from remaining visible while typing.

Prevents incomplete code fences from remaining visible while typing.

Source: granite4.1:30b@2026-06-04-audit

Confidence: low

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Refactor Medium

Replaces regex-driven Markdown engine with full AST pipeline.

Replaces regex-driven Markdown engine with full AST pipeline.

Source: llm_adapter@2026-06-04

Confidence: high

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Refactor Low

Implements an AST visitor styler for paragraph styles, inline coloring, and caret-aware marker handling.

Implements an AST visitor styler for paragraph styles, inline coloring, and caret-aware marker handling.

Source: granite4.1:30b@2026-06-04-audit

Confidence: low

 —
Refactor Low

Replaces structural regexes with hand-written scanners for block-level tokenization.

Replaces structural regexes with hand-written scanners for block-level tokenization.

Source: granite4.1:30b@2026-06-04-audit

Confidence: low

 —
Full changelog

Highlights

Replaces the regex-driven Markdown engine with a full AST pipeline — parsing, tokenizing, and styling now run off a real syntax tree instead of re-scanning the whole document with NSRegularExpression on every keystroke.

Main changes

  • Two-phase AST parse — BlockParser splits the document into a gap-free sequence of blocks; each block's inline content is parsed by InlineParser into a DocumentAST (BlockNodes with inline children).
  • Tables & block LaTeX as first-class AST blocks — with a table-cell scanner that reuses the inline parser, instead of regex detection.
  • AST visitor styler — block paragraph styles, inline colouring, and caret-aware marker reveal/shrink all derive from the tree; this is the live styler now, not the old regex passes.
  • Scanners instead of regex — block-level tokens come from hand-written scanners; the structural regexes in the tokenizer and styler are gone.
  • Incremental parsing & tokenization — per keystroke only the edited block window is re-parsed/re-tokenized (prefix/suffix reuse + buffer memcmp cache, wiki-link fast path), so editing cost is ≈ O(edit) instead of O(document).

Bundled fixes

Heading marker spacing & nested-marker reveal, task-checkbox glyph, file-switch scroll oscillation, incomplete code fences staying visible while typing, and trailing-image scroll/measurement.

Tests

swift test — 61 tests across the AST parser, styler, and end-to-end pipeline suites.

Full changelog: https://github.com/nodes-app/swift-markdown-engine/compare/0.5.1...0.6.0

What's Changed

  • implement full AST instead of regex by @luca-chen198 in https://github.com/nodes-app/swift-markdown-engine/pull/52

Full Changelog: https://github.com/nodes-app/swift-markdown-engine/compare/0.5.1...0.6.0

Breaking Changes

  • Regex-driven parsing and styling are removed; all rendering now uses a full Abstract Syntax Tree (AST) pipeline.
View diff on GitHub

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Related context

Earlier breaking changes

  • v0.10.0 `==highlight==` and `~~strikethrough~~` are now opt‑in extensions, not core grammar.
  • v0.7.0 Default `scrollView` content inset is now `0`; opt back in via `config.safeAreaInsets`.
  • v0.7.0 `scrollView.documentView` is now always an internal container view, never the `NSTextView`.

Beta — feedback welcome: [email protected]