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I've noticed LanguageClient-neovim accumulates zombies on LSP-server restarts... 👻
Classically, whenever that happens — it means the parent process doesn't respect its duty to at least read out the exit-code of children processes that die.
Here's a fix by means of keeping track of the spawned
Childprocess instead of itsu32PID. IIRC, it wasn't possible to construct aChildfrom bare PID for thatchild.try_wait()call. See code.