Re: comint-preoutput-filter-functions trouble

[Stefan Monnier]

> Now if I listen on localhost 60750 with nc, and switch to comint-mode
> in the buffer created by (open-network-stream "foo" "*foo*"
> "localhost" 60750) (instead of *shell*), evaluate (add-hook
> 'comint-preoutput-filter-functions 'upcase nil t), and type something
> in nc, it does *NOT* show up as uppercase in the Emacs buffer *foo*.

> Why do the comint-preoutput-filter-functions seem to have no effect in
> a network-stream buffer?

That's because you haven't told the (network) process to use
comint's functionality.  OTOH when you start a shell via M-x shell, the
process is not just created but it's also configured to do things such
as run comint-preoutput-filter-functions.

You can look for set-process-filter in comint.el to see what comint does
that you didn't do.


        Stefan