v0.4.2

Added

• Markdown support (.md, .markdown). Headings are the symbols, nested by
  level, and a symbol spans its whole section rather than the heading line, so
  read_symbol with Quick start.Connect your client returns that section —
  839 bytes instead of this project's 20 KB README. Both # and underline
  (setext) headings are indexed, a # inside a fenced code block is not, and
  repeated headings receive @line:column selectors. read_symbol,
  list_symbols, search_symbols, and get_document_outline are supported;
  the semantic operations do not apply to prose and report as unsupported.

Fixed

• A registered language could be rejected by the filesystem boundary. The
  set of supported extensions was written out twice — once by the provider
  registry and once as a literal list in load_source — so a newly registered
  language was accepted through the MCP entry point and refused through the
  public API. The boundary now derives its list from the registry, and a test
  asserts the two agree.
• The [.ts/.tsx/...] marker on each tool description — the only place an agent
  learns which files a tool accepts — is hand-written and was a third copy of
  the same set. It now has a test that derives the expectation from the
  registry, which immediately caught .markdown being supported but never
  advertised.
• Python definitions guarded by control flow were missing entirely. A
  function or class inside if, try, with, or a loop was absent from
  get_document_outline and unreachable by read_symbol, so the standard
  try: from _fast import loads / except ImportError: def loads(...) fallback
  had no addressable symbol. Python has no block scope, so these are indexed in
  their enclosing module or class.
• Duplicate names were unreachable outside TypeScript too. Java overloads,
  repeated Go init functions, and #[cfg]-gated Rust twins were listed by the
  outline while read_symbol answered with candidates like E.a at line 2 —
  a label, not a name that could be sent back. They now receive the same
  @line:column occurrence selectors TypeScript uses, and every reported
  candidate reads back.
• Composing a path from an outline now resolves for Rust impl blocks:
  impl Client.send reaches the declaration whose canonical name is
  Client.send.
• The occurrence selector was not always unique, so some names the outline
  reported still could not be read back. Running the indexer over the Go and
  Python standard libraries surfaced three cases the earlier disambiguation
  missed: declarations sharing one source position (var _, _ = …, both blanks
  anchored to the spec), a property getter/setter pair stranded when their
  enclosing class was itself disambiguated, and a top-level name whose leaf
  display collided with another declaration (a Go method shown as foo beside a
  top-level const foo). A final uniqueness pass now closes the invariant
  unconditionally — every name distinct, every sibling display_name distinct,
  with a #ordinal when declarations genuinely share a position — and the Go and
  Python standard libraries are exercised as real-world corpora in the test
  suite.

Changed

• Tree-sitter languages (Rust, Python, Java, Go) no longer map byte offsets to
  line/column by scanning from the start of the file for every declaration,
  which was quadratic in file size. A 16k-declaration file went from 5.2s to
  0.2s, and outline time is now linear in file size.
• The embedded Tree-sitter runtime moved from 0.25 to 0.26. The bundled grammars
  are unaffected — they bind through tree-sitter-language rather than the core
  crate — and no provider behaviour changed.
• Outline snapshots now cover every Tree-sitter language. They previously
  covered only TypeScript, so a change in the shared Tree-sitter backend could
  drop a declaration for the other providers without failing a test.

Install

curl -fsSL https://raw.githubusercontent.com/pioner92/symbolpeek-mcp/main/scripts/install.sh | sh

irm https://raw.githubusercontent.com/pioner92/symbolpeek-mcp/main/scripts/install.ps1 | iex

Then connect the server to your client — the installer prints the exact command.
See the README for requirements and troubleshooting.

Full Changelog: v0.4.1...v0.4.2