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From:	"Lavrentiev, Anton (NIH/NLM/NCBI) [C] via cygwin" <cygwin AT cygwin DOT com>
Reply-To:	"Lavrentiev, Anton (NIH/NLM/NCBI) [C]" <lavr AT ncbi DOT nlm DOT nih DOT gov>
To:	"'cygwin AT cygwin DOT com'" <cygwin AT cygwin DOT com>
Subject:	Re: TCP_CORK (aka TCP_NOPUSH) does not work
Date:	Wed, 31 Jul 2019 21:00:24 +0000
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> Linux and BSD options are not available, whatever the .h #defines.

Unsupported options should not be shown as features in the headers.

> Many header and library files are shared with newlib, which is used by Cygwin

If you checked before responding with a large digress into unrelated details,
you could have seen that the file in question is Cygwin's own, and all the history of mods is right there:

https://cygwin.com/git/gitweb.cgi?p=newlib-cygwin.git;a=blame;f=winsup/cygwin/include/netinet/tcp.h;h=becbec54f800722a2efff2ab4676a71752189d74;hb=HEAD



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