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Re: texinfo-5.9.90 pretest available


From: Gavin Smith
Subject: Re: texinfo-5.9.90 pretest available
Date: Fri, 27 Feb 2015 13:43:48 +0000

On 27 February 2015 at 13:13, Ken Brown <address@hidden> wrote:
> No, it turns out that it has to do with buffered I/O.  See the thread
> starting here:
>
>   https://cygwin.com/ml/cygwin/2015-02/msg00887.html
>
> Replacing the fseek in line 841 by another call to freopen fixes the
> problem.  I don't know if that's the best solution.
>

The setvbuf solution might work - I'm not sure if the buffering
property of the FILE stream will be inherited by the subprocess, or
just the file descriptor (i.e. what "open" would return instead of
what "fopen" would return). The main thing would be if we are reading
from an uncompressed file in install-info (the parent process) -
buffering should be turned back on in that case. Another solution
would be to read the first few bytes of the file using "open", "read"
and "lseek", and make a FILE stream afterwards from the file
descriptor; this would avoid any buffering done by the high-level FILE
streams.



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