This PR improves the logic for detecting and eliminating ANSI color codes and other escape sequences introduced by Sphinx. ANSI escape sequences that are not natively known to Sphinx are not eliminated (e.g., VT100-specific functions).
As a user and/or extension developer, it can be a source of confusion when,
on performing a `sphinx-build` for a cached project,
an unchanged configuration variable is always marked as changed (triggering a full rebuild).
This is often due to the variable being an unpicklable value,
which is silently omitted from the cache (i.e. the `environment.pickle`).
This commit introduces a specific warning for when a configuration variable is omitted from the cache,
allowing users to understand the root of the problem.
The key issue this commit seeks to address, is that existing tools / documentation often lead users to mistakenly use object types and not role names, a classic example being `function` not `func`
Previously, the warning message for using e.g. `` external:function`target` `` (with `py` as the default domain), would be:
```
WARNING: role for external cross-reference not found: function
```
This gives no information to the user on how to fix the issue, even though there is actually quite an easy fix
This commit adds logic to create more specific / helpful warning messages, e.g.
```
WARNING: role for external cross-reference not found in domains 'py', 'std': 'function' (perhaps you meant one of: 'py:func', 'py:obj')
```
This goes through the same original logic but, if the role is not found, it will look if the role name is actually an available object type on the domain(s), and then suggest its related roles.
This commit also reverts #12133, which provided a (silent) fallback to auto convert an object type to a role name.
Add `tests/test_theming/test_theming.py::test_theme_builds`, which is a parametrized test against all builtin sphinx HTML themes, that tests:
1. that the themes builds without warnings for a basic project, and
2. that all `.html` files it produces are valid XML (see https://html.spec.whatwg.org/)
https://pypi.org/project/defusedxml/ was added to the test dependencies, in order to safely parse the XML
This required one fix for `sphinx/themes/basic/search.html`, and one for `sphinx/themes/bizstyle/layout.html`
Also, `tests/test_theming` was removed from the `ruff format` exclude list
Consolidate the provision of a single `http_server` utility method, with `tls_enabled` as a boolean flag,
and rework type annotations to make them more understandable.
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
Co-authored-by: Chris Sewell <chrisj_sewell@hotmail.com>
This commit fixes the issue of `objects.inv` denoting object names, whilst the `external` role only allows for role names.
As an example, take the `objects.inv` for the sphinx documentation, which contains:
```
py:function
compile : usage/domains/python.html#compile
```
A user might understandably expect that they could reference this using `` :external:py:function:`compile` ``, but actually this would previously error with:
```
WARNING: role for external cross-reference not found: py:function
```
this is because, `function` is the object type, yet `external` expects the related role name `func`.
It should not be necessary for the user to know about this distinction,
so in this commit, we add logic, to first look if the name relates to a role name (as previous, to not be back-breaking) but, if not, then also look if the name relates to an object that has a known role and, if so, use that.
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
