[Bug: 21.4.19] point forced to bottom of shell buffer on output

[Jerry James]

Mike Kupfer <mike.kupfer at sun.com> wrote:
> Suppose I start a shell buffer and start a command that generates
> continuing output:
>
>     $ while true; do date; sleep 5; done
>     Mon Jul  3 11:28:05 PDT 2006
>     Mon Jul  3 11:28:10 PDT 2006
>     Mon Jul  3 11:28:15 PDT 2006
>     Mon Jul  3 11:28:20 PDT 2006
>
> If, during the 5-second pause, I move point to the first date output, I
> expect point to stay there, and for each successive "date" command to
> append its output to the end of the buffer.  And that's the behavior I
> get with the xemacs-base 2.03 package.
>
> But if I use the xemacs-base 2.06 package, point is forced back to the
> bottom of the buffer the next time "date" runs.
>
> I assume that this has something to do with the new version of
> comint.  I took a quick look at the customizable comint variables, and
> I see that comint-move-point-for-output is nil.

This means that my recent workaround for the 21.5 insert-before-markers
bug was not quite right.  I need to add a (goto-char opoint) at the end.
Unfortunately, doing so uncovered yet another bug ...

I'll submit a patch for the two problems you identified as soon as I
figure out how to fix the unnamed bug I alluded to above.  Thanks for
the reports.
-- 
Jerry James, Assistant Professor        james at xemacs.org
Computer Science Department             http://www.cs.usu.edu/~jerry/
Utah State University