xfig cannot export subset of layers

[bdmckay]

Macbook Pro, Sonoma 14.1.1, macports , xfig @3.2.9_0, fig2dev @3.2.9_0

Create a figure with items on layers 50,51. It doesn't matter what items; I used circles. Save.

Deselect layer 51 (leaving only layer 50 active). Export->Export only active->Export.

Now a popup says:

Error message from spawned process: fig2dev: help for -D option: -D +rangelist means keep only depths in rangelist. -D -rangelist means keep all depths but those in rangelist. Rangelist can be a list of numbers or ranges of numbers, e.g.:

10,40,55,60:70,99

By intercepting the fig2dev command, I see that the arguments have an additional "-D":

-L eps -D -D -51 -F -n testing.fig

The following command works fine on the command line:

-L eps -D -51 -F -n testing.fig testing.eps