lean4-htt/tests/lean/interactive/docstringLinksExamples.lean.expected.out
David Thrane Christiansen eb58f46ce7
feat: language reference links and examples in docstrings (#7240)
This PR adds a canonical syntax for linking to sections in the language
reference along with formatting of examples in docstrings according to
the docstring style guide.


Docstrings are now pre-processed as follows:

* Output included as part of examples is shown with leading line comment
indicators in hovers

* URLs of the form `lean-manual://section/section-id` are rewritten to
links that point at the corresponding section in the Lean reference
manual. The reference manual's base URL is configured when Lean is built
and can be overridden with the `LEAN_MANUAL_ROOT` environment variable.
This way, releases can point documentation links to the correct
snapshot, and users can use their own, e.g. for offline reading.

Manual URLs in docstrings are validated when the docstring is added. The
presence of a URL starting with `lean-manual://` that is not a
syntactically valid section link causes the docstring to be rejected.
This allows for future extensibility to the set of allowed links. There
is no validation that the linked-to section actually exists. To provide
the best possible error messages in case of validation failures,
`Lean.addDocString` now takes a `TSyntax ``docComment` instead of a
string; clients should adapt by removing the step that extracts the
string, or by calling the lower-level `addDocStringCore` in cases where
the docstring in question is obtained from the environment and has thus
already had its links validated.

A stage0 update is required to make the documentation site configurable
at build time and for releases. A local commit on top of a stage0 update
that will be sent in a followup PR includes the configurable reference
manual root and updates to the release checklist.

---------

Co-authored-by: Marc Huisinga <mhuisi@protonmail.com>
2025-03-12 09:17:27 +00:00

24 lines
1.4 KiB
Text

{"textDocument": {"uri": "file:///docstringLinksExamples.lean"},
"position": {"line": 27, "character": 13}}
{"range":
{"start": {"line": 27, "character": 4}, "end": {"line": 27, "character": 24}},
"contents":
{"value":
"```lean\ncomplicatedIOProgram : IO Unit\n```\n***\nDoes something complicated with IO that involves output.\n\n```lean example\n#eval complicatedIOProgram\n```\n```output\n-- Hello!\n-- More output\n```\n",
"kind": "markdown"}}
{"textDocument": {"uri": "file:///docstringLinksExamples.lean"},
"position": {"line": 50, "character": 13}}
{"range":
{"start": {"line": 50, "character": 4}, "end": {"line": 50, "character": 31}},
"contents":
{"value":
"```lean\nanotherComplicatedIOProgram : IO Unit\n```\n***\nDoes something complicated with IO that involves output.\n\n```lean example\n#eval anotherComplicatedIOProgram\n```\n\n ```output\n -- Hello!\n -- More output\n ```\n",
"kind": "markdown"}}
{"textDocument": {"uri": "file:///docstringLinksExamples.lean"},
"position": {"line": 67, "character": 13}}
{"range":
{"start": {"line": 67, "character": 4}, "end": {"line": 67, "character": 34}},
"contents":
{"value":
"```lean\nyetAnotherComplicatedIOProgram : IO Unit\n```\n***\nDoes something complicated with IO that involves output.\n\n```lean example\n#eval yetAnotherComplicatedIOProgram\n```\n\n ```output\n -- Hello!\n -- More output\n ```\n",
"kind": "markdown"}}