[PD] writesf~ buglet(?) re. dsp on/off

[Larry Troxler]

hmm, it seems that writesf~ only works correctly for me when the "open" 
message is sent when DSP is already on.  

For example, this works:

; dsp on
( send open message to writesf~)
(send start message to writesf~)
(wait some time)
(send stop message to writesf~)
(wait some time)
; dsp off

.. but this doesn't (starting with dsp off) :

(send open message to writesf~)
; dsp on
(send start message to writesf~)
(wait some time)
(send stop message to writesf~)
(wait some time)
; dsp off

In the second case, a file does get created, but it captures only a portion of 
the total recording time.

I Haven't looked through the source yet to trace this, but this raises a 
larger issue I think: how do we know which messages on objects work with dsp 
off, and which of them require dsp on?

Best Regards

Larry Troxler