Created attachment 37 [details]
Nyquist.cpp Slider Widget patch

There are two valid forms of Slider Widget in Nyquist plug-ins:

;control var "text-left" variable-type "text-right" initial-value min max
where "variable-type" may take the value "int"or "real"

Other values for "variable-type" are not valid and should not be displayed, but
if the type is not set to "real" then Audacity treats it as if it were set to
"int".

Edgar suggested that setting the "variable-type" parameter to an invalid value
should produce an error message, however all other types of malformed widget
are simply ignored by Audacity.

The attached patch is for the Nyquist.cpp file and checks the "variable-type"
parameter against both valid data types so that Slider Widgets with invalid
"variable-type" parameters are not displayed.