Emacs Flymake: diagnostics not cleared sometimes

[strager]

Repro:

1. C-x b RET (open *scratch*)
2. M-x js-mode RET
3. Go to the first line and insert //
4. Go to the second line and insert //

At this point, Flymake should report no issues, but it reports an unclosed regexp literal error.

5. On a new line, type documents
6. Hover the mouse cursor over the word 'documents' and observe:
   

[wgrr]

@strager i think this bug is related with state track of quick-lint-js process, reported a new issue (#400) for the crash that this input is doing to quick-lint-js

[strager]

@strager i think this bug is related with state track of quick-lint-js process, reported a new issue (#400) for the crash that this input is doing to quick-lint-js

Do you think the plugin gets confused when quick-lint-js crashes?

[wgrr]

Do you think the plugin gets confused when quick-lint-js crashes?

Yes, I'm still investigating that, apparently if quick-lint-js crashes (make-process) is never calling us back so we don't have a chance to disable ourselves or update the current errors, but im not 100% sure about this, what im tho is we are never taking the :panic branch, even if we crash.
I'll bet it has somewhat related with signals.