`:Coq Check nat.` hangs.

[kindaro]

Hello.

I am new to Coq. My expectation is that :Coq Check nat. should write something along the lines of nat : Set to the Infos window. This is not the case: insofar as CoqLaunch was issued previously and, hence, there is a pair of coqtop processes attached to Vim, the following will be displayed, with Vim hanging:

[pid 1828] Unexpected XML message
[pid 1828] Expected XML node: pair
[pid 1828] XML tree received: <state_id val="1"/>

(Though with garbled indentation that I fixed manually for the purpose of clarity of presentation.)

Here 1828 is the process identifier of coqtop -ideslave -main-channel stdfds -async-proofs on.

If I resize terminal window, Vim will unstick, both coqtop processes will die, and the Goals and Infos buffers will get closed.

---

My operating system is ArchLinux.

Here is the version of Coq I use:

% coqtop --version
The Coq Proof Assistant, version 8.7.1 (December 2017)
compiled on Dec 16 2017 22:25:15 with OCaml 4.05.0

I have cloned coquille at commit df24600 which is the latest at the moment.

[aferr]

Is there a workaround for this? I have checked out the pathogen-bundle branches, not the master branch.