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Fix issue where no anyio backend is produced #46

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ascopes wants to merge 2 commits into from
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Fix issue where no anyio backend is produced #46

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8727e37
Fix issue where no anyio backend is produced
ascopes Oct 10, 2025
8e870cd
Update core.py to move asyncio fallback logic to preseve existing beh…
ascopes Oct 10, 2025
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7 changes: 5 additions & 2 deletions src/asyncclick/core.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1520,7 +1520,7 @@ async def _main_shell_completion(
def __call__(
self,
*args: t.Any,
_anyio_backend: str | None = None,
_anyio_backend: str | None,
_anyio_backend_options: dict[str, t.Any] | None = None,
**kwargs: t.Any,
) -> t.Any:
Expand All @@ -1529,6 +1529,9 @@ def __call__(
If you are already inside an async event loop, call
``await`` :meth:`main` instead.

If no backend is found and anyio is not installed, then ``asyncio`` is
used for the backend.

:param _anyio_backend: The backend to use for the event loop.
:param _anyio_backend_options: Any options to pass to the backend.

Expand All @@ -1553,7 +1556,7 @@ def __call__(
import trio

return trio.run(self._main, main, args, kwargs)
if _anyio_backend == "asyncio":
if _anyio_backend == "asyncio" or _anyio_backend is None:
import asyncio

return asyncio.run(self._main(main, args, kwargs))
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