feat(docs): parse # COMPONENT headers in manualtools

docs/manualtools.py

@@ -62,6 +62,7 @@ HEADER_LABEL = re.compile(r"^#\s+([A-Z][A-Z ]*[A-Z])\s*$")
 FUNC_DEF = re.compile(r"^\s*function\s+(\S+)")
 SECTIONS = (
     "CATEGORY",
+    "COMPONENT",
     "DEPENDENCIES",
     "SYNOPSIS",
     "DESCRIPTION",
@@ -109,6 +110,19 @@ def _trailing_blanks(lines: list[str]) -> int:
     return n
 
 
+def _block_identity(path: Path, lines: list[str], end: int, blocks_count: int) -> str:
+    """Resolve a header block's associated name.
+
+    A file carrying exactly one header is associated with its own stem, so
+    a `function` nested inside a `type -q` guard still resolves. A file
+    with several headers walks forward to the next `function` definition.
+    """
+    if blocks_count == 1:
+        return path.stem
+    after = (m.group(1) for ln in lines[end:] if (m := FUNC_DEF.match(ln)))
+    return next(after, path.stem)
+
+
 def parse_functions(root: Path) -> dict[str, dict[str, list[str]]]:
     """Parse the comment header above every documented public function.
 
@@ -128,11 +142,7 @@ def parse_functions(root: Path) -> dict[str, dict[str, list[str]]]:
         lines = path.read_text(encoding="utf-8").split("\n")
         blocks = _header_blocks(lines)
         for end, sections in blocks:
-            if len(blocks) == 1:
-                name = path.stem
-            else:
-                after = (m.group(1) for ln in lines[end:] if (m := FUNC_DEF.match(ln)))
-                name = next(after, path.stem)
+            name = _block_identity(path, lines, end, len(blocks))
             if name.startswith("_") or "CATEGORY" not in sections:
                 continue
             out[name] = {
@@ -185,6 +195,63 @@ def parse_abbreviations(root: Path) -> dict[str, list[dict]]:
     return out
 
 
+SITE_LINE_RE = re.compile(r"^site\s+(\S+):\s*(\S+)$")
+
+
+def parse_component_lines(lines: list[str]) -> list[tuple[str, str]]:
+    """Parse raw `# COMPONENT` body lines into (site, tag) pairs.
+
+    A line of the form `site <slug>: <tag>` scopes <tag> to that site; a
+    bare `<tag>` line belongs to the default (unnamed) site, keyed "".
+    Blank lines are skipped.
+    """
+    out: list[tuple[str, str]] = []
+    for line in lines:
+        line = line.strip()
+        if not line:
+            continue
+        m = SITE_LINE_RE.match(line)
+        if m:
+            out.append((m.group(1), m.group(2)))
+        else:
+            out.append(("", line))
+    return out
+
+
+def _parse_component_blocks(path: Path) -> dict[str, list[str]]:
+    """Parse every `# COMPONENT` header block in one file.
+
+    Unlike parse_functions, there is no `# CATEGORY` gate and no
+    underscore exclusion: component classification applies to every
+    function/script, public or private, documented in the manual or not
+    -- the registry needs to see every guarded identity, not just the
+    ones that appear in the public function reference.
+    """
+    lines = path.read_text(encoding="utf-8").split("\n")
+    blocks = _header_blocks(lines)
+    out: dict[str, list[str]] = {}
+    for end, sections in blocks:
+        if "COMPONENT" not in sections:
+            continue
+        name = _block_identity(path, lines, end, len(blocks))
+        body = sections["COMPONENT"]
+        out[name] = body[: len(body) - _trailing_blanks(body)]
+    return out
+
+
+def parse_component_file(path: Path) -> dict[str, list[str]]:
+    """Parse `# COMPONENT` header block(s) in one specific file (e.g. config.fish)."""
+    return _parse_component_blocks(path)
+
+
+def parse_components(root: Path) -> dict[str, list[str]]:
+    """Parse `# COMPONENT` header blocks across every `*.fish` file under root."""
+    out: dict[str, list[str]] = {}
+    for path in sorted(root.glob("*.fish")):
+        out.update(_parse_component_blocks(path))
+    return out
+
+
 def _sort_key(entry: Path) -> tuple:
     """Order by sidebar.order when present, else by filename. Stable."""
     target = entry / "index.md" if entry.is_dir() else entry

docs/verify-manual.py

@@ -827,6 +827,79 @@ def test_site_avoids_reserved_dir():
     )
 
 
+def test_parse_component_lines_default_and_named_sites():
+    lines = [
+        "aliases/filesystem",
+        "site exit-plain: overrides/key-bindings",
+        "site logging-guard: logging/terminal-capture",
+        "",
+        "  ",
+    ]
+    got = mt.parse_component_lines(lines)
+    assert got == [
+        ("", "aliases/filesystem"),
+        ("exit-plain", "overrides/key-bindings"),
+        ("logging-guard", "logging/terminal-capture"),
+    ], f"unexpected parse: {got}"
+
+
+def test_parse_components_includes_underscore_prefixed_and_uncategorised():
+    """Unlike parse_functions, parse_components has no # CATEGORY gate and
+    no underscore exclusion -- every guarded identity must be visible."""
+    with tempfile.TemporaryDirectory() as d:
+        root = Path(d)
+        (root / "__private_helper.fish").write_text(
+            "# COMPONENT\n"
+            "#   logging/terminal-capture\n"
+            "function __private_helper\n"
+            "end\n"
+        )
+        (root / "no_category.fish").write_text(
+            "# COMPONENT\n"
+            "#   aliases/filesystem\n"
+            "#\n"
+            "# SYNOPSIS\n"
+            "#   no_category\n"
+            "function no_category\n"
+            "end\n"
+        )
+        got = mt.parse_components(root)
+    assert got["__private_helper"] == ["logging/terminal-capture"]
+    assert got["no_category"] == ["aliases/filesystem"]
+
+
+def test_parse_components_resolves_multi_header_file_to_function_name():
+    with tempfile.TemporaryDirectory() as d:
+        root = Path(d)
+        (root / "multi.fish").write_text(
+            "# COMPONENT\n"
+            "#   aliases/filesystem\n"
+            "function first_fn\n"
+            "end\n"
+            "\n"
+            "# COMPONENT\n"
+            "#   aliases/network\n"
+            "function second_fn\n"
+            "end\n"
+        )
+        got = mt.parse_components(root)
+    assert got == {
+        "first_fn": ["aliases/filesystem"],
+        "second_fn": ["aliases/network"],
+    }, f"unexpected resolution: {got}"
+
+
+def test_parse_component_file_single_file():
+    with tempfile.TemporaryDirectory() as d:
+        path = Path(d) / "config.fish"
+        path.write_text(
+            "# COMPONENT\n"
+            "#   site greeting-block: greeting/greeting-message\n"
+        )
+        got = mt.parse_component_file(path)
+    assert got == {"config": ["site greeting-block: greeting/greeting-message"]}
+
+
 TESTS = [v for k, v in sorted(globals().items()) if k.startswith("test_")]