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Filewatching fails silently with >4096 paths #48

@maiamcc

Description

@maiamcc

Before reporting an issue, please ensure you are using the latest release of fsevents.

Which version of macOS are you using?

ProductName:	Mac OS X
ProductVersion:	10.15.4
BuildVersion:	19E287

Please describe the issue that occurred.

Filewatching with fsevents.EventStream works just fine for up to 4096 paths; from 4097 paths upwards, I don't seem to be getting any events (nor error messages).

Are you able to reproduce the issue? Please provide steps to reproduce and a code sample if possible.

Repro case here (a small Go util that watches files specified as args, plus repro instructions).

FWIW, I think this may be an underlying problem with fsevents (because I could reproduce the problem with e.g. this fswatch util), but I'm not sure where to report; would be happy for guidance!

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