From: andrewi AT harlequin DOT co DOT uk (Andrew Innes)
Subject: Re: bash-shell output
4 Feb 1998 09:18:46 -0800
Message-ID: <199802041652.QAA22717.cygnus.gnu-win32@shirow.long.harlequin.co.uk>
References: <ulnvq97vd DOT fsf AT teles DOT de>
To: ngo AT wossolit DOT teles DOT de
Cc: gnu-win32 AT cygnus DOT com, ntemacs-users AT cs DOT washington DOT edu

On 04 Feb 1998 17:07:50 -0800, Nils Goesche <ngo AT wossolit DOT teles DOT de> said:
>You have to uncomment that fflush-line. But the usual shells
>like command.com or 4nt don't need that line. This is somewhat
>annoying. Can I at least force the shell somehow to flush
>input/output buffers? Some other programs are just unusable 
>because of this behavior.

This is a consequence of the design of Windows (well, that combined with
the behaviour of the Microsoft C runtime library).

Most DOS/Windows compilers make stdout unbuffered if isatty() returns
true, and isatty() in turn calls GetFileType on the OS file handle - if
the handle is a console handle, then isatty returns true.

Emacs has to redirect stdin and stdout/stderr for subprocesses through
pipes so it can communicate with them, but cannot hide the fact that
the handles are pipe handles.

AndrewI

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