Re: Lost process output in pipe between Emacs and CVS

[Richard Stallman]

    CVS uses stdio, and stdio doesn't work very well with non-blocking
    file descriptors.  CVS can detect the error easily enough, but at that
    point stdio has already thrown away the buffer full of data, and CVS
    hasn't recorded it anywhere.  While in principle CVS could switch to
    not use stdio, that would be a fairly substantial change.

Many programs use stdio, and these programs ought to work when run
under ssh.  This suggests that ssh and stdio are responsible for the
problem, and one or the other of them should be fixed.

It would be best to fix stdio, I think.  What platform is CVS running
on when it fails?  Does stdio in GNU libc handle non-blocking file
descriptors properly?  If not, we can fix it.