How to determine a track's Bit depth

[steve]

It would certainly be interesting to be able to define or alter Audacity macros from within Nyquist.
However, the developers are worried about such structures that could potentially call themselves.

The limitation that Nyquist can’t call itself still exists, but Audacity now handles the limitation better. If a Nyquist macro command attempts to call a Nyquist plug-in, the command is skipped / ignored.
Related to this, you might be interested in looking at my “Macro Step Through” plug-in. The most recent version: Enhancement for Macros - #33 by steve