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Re: cat bug on cygwin

From: Eric Blake
Subject: Re: cat bug on cygwin
Date: Thu, 31 May 2007 07:19:54 -0600
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According to Jim Meyering on 5/31/2007 7:14 AM:
> In coreutils, we'd also need a function to operate on a file descriptor,
> like SET_BINARY does.  Maybe SET_BINARY itself, after all.

The gnulib binary-io module provides SET_BINARY, and I'm not sure whether
it was written before or after the SET_BINARY that used to live in
coreutils' system.h; but yes, it is the correct thing to use when dealing
with file descriptors.  What was wrong was expecting
SET_BINARY(fileno(fp)) to work, because the stdio library (at least on
cygwin) also maintains some state as to whether the underlying fd is in
text mode, and changing the underlying fd without notifying stdio causes

> Eric, do you feel like doing this?
> It'd be great if you would also add a test or two that
> demonstrate how the current implementations fail on Cygwin.

OK, give me some time to polish and post my patches, one to gnulib and one
to coreutils.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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