Subject: bug#53678: 29.0.50; Invalid read syntax: "#<" for package install in Windows

From: Stefan Monnier <[email-masked]>
Date: Tue, 01 Feb 2022 22:32:40 -0500

Eli Zaretskii [2022-02-01 17:00:34] wrote:
>> Date: Tue, 01 Feb 2022 13:32:11 +0800
>> From:  Shuguang Sun via "Bug reports for GNU Emacs,
>>  the Swiss army knife of text editors" <[email-masked]>
>> When I try to install packages from the Package Menu or the command of
>> package-install since about two weeks ago, it reports the error:
>> ```
>> error in process sentinel: async-when-done: Invalid read syntax: "#<"
>> error in process sentinel: Invalid read syntax: "#<"
>> ```
> Stefan, any thoughts?

IIUC the above error involves some part of the `async` package.
Could you give a bit more information about how you hooked `async` with
`package`?

        Stefan